def decide_user_install(
use_user_site, # type: Optional[bool]
prefix_path=None, # type: Optional[str]
target_dir=None, # type: Optional[str]
root_path=None, # type: Optional[str]
isolated_mode=False, # type: bool
):
# type: (...) -> bool
"""Determine whether to do a user install based on the input options.
If use_user_site is False, no additional checks are done.
If use_user_site is True, it is checked for compatibility with other
options.
If use_user_site is None, the default behaviour depends on the environment,
which is provided by the other arguments.
"""
# In some cases (config from tox), use_user_site can be set to an integer
# rather than a bool, which 'use_user_site is False' wouldn't catch.
if (use_user_site is not None) and (not use_user_site):
logger.debug("Non-user install by explicit request")
return False
if use_user_site:
if prefix_path:
raise CommandError(
"Can not combine '--user' and '--prefix' as they imply "
"different installation locations")
if virtualenv_no_global():
raise InstallationError(
"Can not perform a '--user' install. User site-packages "
"are not visible in this virtualenv.")
logger.debug("User install by explicit request")
return True
# If we are here, user installs have not been explicitly requested/avoided
assert use_user_site is None
# user install incompatible with --prefix/--target
if prefix_path or target_dir:
logger.debug("Non-user install due to --prefix or --target option")
return False
# If user installs are not enabled, choose a non-user install
if not site.ENABLE_USER_SITE:
logger.debug("Non-user install because user site-packages disabled")
return False
# If we have permission for a non-user install, do that,
# otherwise do a user install.
if site_packages_writable(root=root_path, isolated=isolated_mode):
logger.debug("Non-user install because site-packages writeable")
return False
logger.info("Defaulting to user installation because normal site-packages "
"is not writeable")
return True
def run(self, options, args):
# type: (Values, List[str]) -> int
if options.use_user_site and options.target_dir is not None:
raise CommandError("Can not combine '--user' and '--target'")
cmdoptions.check_install_build_global(options)
upgrade_strategy = "to-satisfy-only"
if options.upgrade:
upgrade_strategy = options.upgrade_strategy
cmdoptions.check_dist_restriction(options, check_target=True)
install_options = options.install_options or []
logger.debug("Using %s", get_pip_version())
options.use_user_site = decide_user_install(
options.use_user_site,
prefix_path=options.prefix_path,
target_dir=options.target_dir,
root_path=options.root_path,
isolated_mode=options.isolated_mode,
)
target_temp_dir = None # type: Optional[TempDirectory]
target_temp_dir_path = None # type: Optional[str]
if options.target_dir:
options.ignore_installed = True
options.target_dir = os.path.abspath(options.target_dir)
if (os.path.exists(options.target_dir)
and not os.path.isdir(options.target_dir)):
raise CommandError(
"Target path exists but is not a directory, will not "
"continue.")
# Create a target directory for using with the target option
target_temp_dir = TempDirectory(kind="target")
target_temp_dir_path = target_temp_dir.path
self.enter_context(target_temp_dir)
global_options = options.global_options or []
session = self.get_default_session(options)
target_python = make_target_python(options)
finder = self._build_package_finder(
options=options,
session=session,
target_python=target_python,
ignore_requires_python=options.ignore_requires_python,
)
build_delete = (not (options.no_clean or options.build_dir))
wheel_cache = WheelCache(options.cache_dir, options.format_control)
req_tracker = self.enter_context(get_requirement_tracker())
directory = TempDirectory(
options.build_dir,
delete=build_delete,
kind="install",
globally_managed=True,
)
try:
reqs = self.get_requirements(args, options, finder, session)
reject_location_related_install_options(reqs,
options.install_options)
preparer = self.make_requirement_preparer(
temp_build_dir=directory,
options=options,
req_tracker=req_tracker,
session=session,
finder=finder,
use_user_site=options.use_user_site,
)
resolver = self.make_resolver(
preparer=preparer,
finder=finder,
options=options,
wheel_cache=wheel_cache,
use_user_site=options.use_user_site,
ignore_installed=options.ignore_installed,
ignore_requires_python=options.ignore_requires_python,
force_reinstall=options.force_reinstall,
upgrade_strategy=upgrade_strategy,
use_pep517=options.use_pep517,
)
self.trace_basic_info(finder)
requirement_set = resolver.resolve(
reqs, check_supported_wheels=not options.target_dir)
try:
pip_req = requirement_set.get_requirement("pip")
except KeyError:
modifying_pip = False
else:
# If we're not replacing an already installed pip,
# we're not modifying it.
modifying_pip = pip_req.satisfied_by is None
protect_pip_from_modification_on_windows(
modifying_pip=modifying_pip)
check_binary_allowed = get_check_binary_allowed(
finder.format_control)
reqs_to_build = [
r for r in requirement_set.requirements.values()
if should_build_for_install_command(r, check_binary_allowed)
]
_, build_failures = build(
reqs_to_build,
wheel_cache=wheel_cache,
build_options=[],
global_options=[],
)
# If we're using PEP 517, we cannot do a direct install
# so we fail here.
# We don't care about failures building legacy
# requirements, as we'll fall through to a direct
# install for those.
pep517_build_failures = [r for r in build_failures if r.use_pep517]
if pep517_build_failures:
raise InstallationError(
"Could not build wheels for {} which use"
" PEP 517 and cannot be installed directly".format(
", ".join(r.name # type: ignore
for r in pep517_build_failures)))
to_install = resolver.get_installation_order(requirement_set)
# Check for conflicts in the package set we're installing.
conflicts = None # type: Optional[ConflictDetails]
should_warn_about_conflicts = (not options.ignore_dependencies
and options.warn_about_conflicts)
if should_warn_about_conflicts:
conflicts = self._determine_conflicts(to_install)
# Don't warn about script install locations if
# --target has been specified
warn_script_location = options.warn_script_location
if options.target_dir:
warn_script_location = False
installed = install_given_reqs(
to_install,
install_options,
global_options,
root=options.root_path,
home=target_temp_dir_path,
prefix=options.prefix_path,
warn_script_location=warn_script_location,
use_user_site=options.use_user_site,
pycompile=options.compile,
)
lib_locations = get_lib_location_guesses(
user=options.use_user_site,
home=target_temp_dir_path,
root=options.root_path,
prefix=options.prefix_path,
isolated=options.isolated_mode,
)
working_set = pkg_resources.WorkingSet(lib_locations)
installed.sort(key=operator.attrgetter('name'))
items = []
for result in installed:
item = result.name
try:
installed_version = get_installed_version(
result.name, working_set=working_set)
if installed_version:
item += '-' + installed_version
except Exception:
pass
items.append(item)
if conflicts is not None:
self._warn_about_conflicts(conflicts)
installed_desc = ' '.join(items)
if installed_desc:
write_output(
'Successfully installed %s',
installed_desc,
)
except EnvironmentError as error:
show_traceback = (self.verbosity >= 1)
message = create_env_error_message(
error,
show_traceback,
options.use_user_site,
)
logger.error(message, exc_info=show_traceback) # noqa
return ERROR
if options.target_dir:
assert target_temp_dir
self._handle_target_dir(options.target_dir, target_temp_dir,
options.upgrade)
return SUCCESS
def parse_editable(editable_req):
# type: (str) -> Tuple[Optional[str], str, Optional[Set[str]]]
"""Parses an editable requirement into:
- a requirement name
- an URL
- extras
- editable options
Accepted requirements:
svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
.[some_extra]
"""
url = editable_req
# If a file path is specified with extras, strip off the extras.
url_no_extras, extras = _strip_extras(url)
if os.path.isdir(url_no_extras):
if not os.path.exists(os.path.join(url_no_extras, 'setup.py')):
msg = (
'File "setup.py" not found. Directory cannot be installed '
'in editable mode: {}'.format(os.path.abspath(url_no_extras))
)
pyproject_path = make_pyproject_path(url_no_extras)
if os.path.isfile(pyproject_path):
msg += (
'\n(A "pyproject.toml" file was found, but editable '
'mode currently requires a setup.py based build.)'
)
raise InstallationError(msg)
# Treating it as code that has already been checked out
url_no_extras = path_to_url(url_no_extras)
if url_no_extras.lower().startswith('file:'):
package_name = Link(url_no_extras).egg_fragment
if extras:
return (
package_name,
url_no_extras,
Requirement("placeholder" + extras.lower()).extras,
)
else:
return package_name, url_no_extras, None
for version_control in vcs:
if url.lower().startswith('%s:' % version_control):
url = '%s+%s' % (version_control, url)
break
if '+' not in url:
raise InstallationError(
'{} is not a valid editable requirement. '
'It should either be a path to a local project or a VCS URL '
'(beginning with svn+, git+, hg+, or bzr+).'.format(editable_req)
)
vc_type = url.split('+', 1)[0].lower()
if not vcs.get_backend(vc_type):
error_message = 'For --editable=%s only ' % editable_req + \
', '.join([backend.name + '+URL' for backend in vcs.backends]) + \
' is currently supported'
raise InstallationError(error_message)
package_name = Link(url).egg_fragment
if not package_name:
raise InstallationError(
"Could not detect requirement name for '%s', please specify one "
"with #egg=your_package_name" % editable_req
)
return package_name, url, None
:param url: File path or url.
:param session: PipSession instance.
:param comes_from: Origin description of requirements.
"""
scheme = get_url_scheme(url)
if scheme in ['http', 'https']:
# FIXME: catch some errors
resp = session.get(url)
resp.raise_for_status()
return resp.url, resp.text
elif scheme == 'file':
if comes_from and comes_from.startswith('http'):
raise InstallationError(
'Requirements file %s references URL %s, which is local'
% (comes_from, url))
path = url.split(':', 1)[1]
path = path.replace('\\', '/')
match = _url_slash_drive_re.match(path)
if match:
path = match.group(1) + ':' + path.split('|', 1)[1]
path = urllib_parse.unquote(path)
if path.startswith('/'):
path = '/' + path.lstrip('/')
url = path
try:
with open(url, 'rb') as f:
content = auto_decode(f.read())
def add_requirement(
self,
install_req, # type: InstallRequirement
parent_req_name=None, # type: Optional[str]
extras_requested=None # type: Optional[Iterable[str]]
):
# type: (...) -> Tuple[List[InstallRequirement], Optional[InstallRequirement]] # noqa: E501
"""Add install_req as a requirement to install.
:param parent_req_name: The name of the requirement that needed this
added. The name is used because when multiple unnamed requirements
resolve to the same name, we could otherwise end up with dependency
links that point outside the Requirements set. parent_req must
already be added. Note that None implies that this is a user
supplied requirement, vs an inferred one.
:param extras_requested: an iterable of extras used to evaluate the
environment markers.
:return: Additional requirements to scan. That is either [] if
the requirement is not applicable, or [install_req] if the
requirement is applicable and has just been added.
"""
name = install_req.name
# If the markers do not match, ignore this requirement.
if not install_req.match_markers(extras_requested):
logger.info(
"Ignoring %s: markers '%s' don't match your environment",
name, install_req.markers,
)
return [], None
# If the wheel is not supported, raise an error.
# Should check this after filtering out based on environment markers to
# allow specifying different wheels based on the environment/OS, in a
# single requirements file.
if install_req.link and install_req.link.is_wheel:
wheel = Wheel(install_req.link.filename)
if self.check_supported_wheels and not wheel.supported():
raise InstallationError(
"%s is not a supported wheel on this platform." %
wheel.filename
)
# This next bit is really a sanity check.
assert install_req.is_direct == (parent_req_name is None), (
"a direct req shouldn't have a parent and also, "
"a non direct req should have a parent"
)
# Unnamed requirements are scanned again and the requirement won't be
# added as a dependency until after scanning.
if not name:
# url or path requirement w/o an egg fragment
self.unnamed_requirements.append(install_req)
return [install_req], None
try:
existing_req = self.get_requirement(name)
except KeyError:
existing_req = None
has_conflicting_requirement = (
parent_req_name is None and
existing_req and
not existing_req.constraint and
existing_req.extras == install_req.extras and
existing_req.req.specifier != install_req.req.specifier
)
if has_conflicting_requirement:
raise InstallationError(
"Double requirement given: %s (already in %s, name=%r)"
% (install_req, existing_req, name)
)
# When no existing requirement exists, add the requirement as a
# dependency and it will be scanned again after.
if not existing_req:
self.requirements[name] = install_req
# FIXME: what about other normalizations? E.g., _ vs. -?
if name.lower() != name:
self.requirement_aliases[name.lower()] = name
# We'd want to rescan this requirements later
return [install_req], install_req
# Assume there's no need to scan, and that we've already
# encountered this for scanning.
if install_req.constraint or not existing_req.constraint:
return [], existing_req
does_not_satisfy_constraint = (
install_req.link and
not (
existing_req.link and
install_req.link.path == existing_req.link.path
)
)
if does_not_satisfy_constraint:
self.reqs_to_cleanup.append(install_req)
raise InstallationError(
"Could not satisfy constraints for '%s': "
"installation from path or url cannot be "
"constrained to a version" % name,
)
# If we're now installing a constraint, mark the existing
# object for real installation.
existing_req.constraint = False
existing_req.extras = tuple(sorted(
set(existing_req.extras) | set(install_req.extras)
))
logger.debug(
"Setting %s extras to: %s",
existing_req, existing_req.extras,
)
# Return the existing requirement for addition to the parent and
# scanning again.
return [existing_req], existing_req
def run(self, options, args):
cmdoptions.check_install_build_global(options)
upgrade_strategy = "to-satisfy-only"
if options.upgrade:
upgrade_strategy = options.upgrade_strategy
if options.build_dir:
options.build_dir = os.path.abspath(options.build_dir)
cmdoptions.check_dist_restriction(options, check_target=True)
if options.python_version:
python_versions = [options.python_version]
else:
python_versions = None
options.src_dir = os.path.abspath(options.src_dir)
install_options = options.install_options or []
if options.use_user_site:
if options.prefix_path:
raise CommandError(
"Can not combine '--user' and '--prefix' as they imply "
"different installation locations")
if virtualenv_no_global():
raise InstallationError(
"Can not perform a '--user' install. User site-packages "
"are not visible in this virtualenv.")
install_options.append('--user')
install_options.append('--prefix=')
target_temp_dir = TempDirectory(kind="target")
if options.target_dir:
options.ignore_installed = True
options.target_dir = os.path.abspath(options.target_dir)
if (os.path.exists(options.target_dir)
and not os.path.isdir(options.target_dir)):
raise CommandError(
"Target path exists but is not a directory, will not "
"continue.")
# Create a target directory for using with the target option
target_temp_dir.create()
install_options.append('--home=' + target_temp_dir.path)
global_options = options.global_options or []
with self._build_session(options) as session:
finder = self._build_package_finder(
options=options,
session=session,
platform=options.platform,
python_versions=python_versions,
abi=options.abi,
implementation=options.implementation,
)
build_delete = (not (options.no_clean or options.build_dir))
wheel_cache = WheelCache(options.cache_dir, options.format_control)
if options.cache_dir and not check_path_owner(options.cache_dir):
logger.warning(
"The directory '%s' or its parent directory is not owned "
"by the current user and caching wheels has been "
"disabled. check the permissions and owner of that "
"directory. If executing pip with sudo, you may want "
"sudo's -H flag.",
options.cache_dir,
)
options.cache_dir = None
with RequirementTracker() as req_tracker, TempDirectory(
options.build_dir, delete=build_delete,
kind="install") as directory:
requirement_set = RequirementSet(
require_hashes=options.require_hashes,
check_supported_wheels=not options.target_dir,
)
try:
self.populate_requirement_set(requirement_set, args,
options, finder, session,
self.name, wheel_cache)
preparer = RequirementPreparer(
build_dir=directory.path,
src_dir=options.src_dir,
download_dir=None,
wheel_download_dir=None,
progress_bar=options.progress_bar,
build_isolation=options.build_isolation,
req_tracker=req_tracker,
)
resolver = Resolver(
preparer=preparer,
finder=finder,
session=session,
wheel_cache=wheel_cache,
use_user_site=options.use_user_site,
upgrade_strategy=upgrade_strategy,
force_reinstall=options.force_reinstall,
ignore_dependencies=options.ignore_dependencies,
ignore_requires_python=options.ignore_requires_python,
ignore_installed=options.ignore_installed,
isolated=options.isolated_mode,
use_pep517=options.use_pep517)
resolver.resolve(requirement_set)
protect_pip_from_modification_on_windows(
modifying_pip=requirement_set.has_requirement("pip"))
# Consider legacy and PEP517-using requirements separately
legacy_requirements = []
pep517_requirements = []
for req in requirement_set.requirements.values():
if req.use_pep517:
pep517_requirements.append(req)
else:
legacy_requirements.append(req)
# We don't build wheels for legacy requirements if we
# don't have wheel installed or we don't have a cache dir
try:
import wheel # noqa: F401
build_legacy = bool(options.cache_dir)
except ImportError:
build_legacy = False
wb = WheelBuilder(
finder,
preparer,
wheel_cache,
build_options=[],
global_options=[],
)
# Always build PEP 517 requirements
build_failures = wb.build(pep517_requirements,
session=session,
autobuilding=True)
if build_legacy:
# We don't care about failures building legacy
# requirements, as we'll fall through to a direct
# install for those.
wb.build(legacy_requirements,
session=session,
autobuilding=True)
# If we're using PEP 517, we cannot do a direct install
# so we fail here.
if build_failures:
raise InstallationError(
"Could not build wheels for {} which use"
" PEP 517 and cannot be installed directly".format(
", ".join(r.name for r in build_failures)))
to_install = resolver.get_installation_order(
requirement_set)
# Consistency Checking of the package set we're installing.
should_warn_about_conflicts = (
not options.ignore_dependencies
and options.warn_about_conflicts)
if should_warn_about_conflicts:
self._warn_about_conflicts(to_install)
# Don't warn about script install locations if
# --target has been specified
warn_script_location = options.warn_script_location
if options.target_dir:
warn_script_location = False
installed = install_given_reqs(
to_install,
install_options,
global_options,
root=options.root_path,
home=target_temp_dir.path,
prefix=options.prefix_path,
pycompile=options.compile,
warn_script_location=warn_script_location,
use_user_site=options.use_user_site,
)
lib_locations = get_lib_location_guesses(
user=options.use_user_site,
home=target_temp_dir.path,
root=options.root_path,
prefix=options.prefix_path,
isolated=options.isolated_mode,
)
working_set = pkg_resources.WorkingSet(lib_locations)
reqs = sorted(installed, key=operator.attrgetter('name'))
items = []
for req in reqs:
item = req.name
try:
installed_version = get_installed_version(
req.name, working_set=working_set)
if installed_version:
item += '-' + installed_version
except Exception:
pass
items.append(item)
installed = ' '.join(items)
if installed:
logger.info('Successfully installed %s', installed)
except EnvironmentError as error:
show_traceback = (self.verbosity >= 1)
message = create_env_error_message(
error,
show_traceback,
options.use_user_site,
)
logger.error(message, exc_info=show_traceback)
return ERROR
except PreviousBuildDirError:
options.no_clean = True
raise
finally:
# Clean up
if not options.no_clean:
requirement_set.cleanup_files()
wheel_cache.cleanup()
if options.target_dir:
self._handle_target_dir(options.target_dir, target_temp_dir,
options.upgrade)
return requirement_set
def run(self, options: Values, args: List[str]) -> int:
if options.use_user_site and options.target_dir is not None:
raise CommandError("Can not combine '--user' and '--target'")
cmdoptions.check_install_build_global(options)
upgrade_strategy = "to-satisfy-only"
if options.upgrade:
upgrade_strategy = options.upgrade_strategy
cmdoptions.check_dist_restriction(options, check_target=True)
install_options = options.install_options or []
logger.verbose("Using %s", get_pip_version())
options.use_user_site = decide_user_install(
options.use_user_site,
prefix_path=options.prefix_path,
target_dir=options.target_dir,
root_path=options.root_path,
isolated_mode=options.isolated_mode,
)
target_temp_dir: Optional[TempDirectory] = None
target_temp_dir_path: Optional[str] = None
if options.target_dir:
options.ignore_installed = True
options.target_dir = os.path.abspath(options.target_dir)
if (
# fmt: off
os.path.exists(options.target_dir)
and not os.path.isdir(options.target_dir)
# fmt: on
):
raise CommandError(
"Target path exists but is not a directory, will not continue."
)
# Create a target directory for using with the target option
target_temp_dir = TempDirectory(kind="target")
target_temp_dir_path = target_temp_dir.path
self.enter_context(target_temp_dir)
global_options = options.global_options or []
session = self.get_default_session(options)
target_python = make_target_python(options)
finder = self._build_package_finder(
options=options,
session=session,
target_python=target_python,
ignore_requires_python=options.ignore_requires_python,
)
wheel_cache = WheelCache(options.cache_dir, options.format_control)
build_tracker = self.enter_context(get_build_tracker())
directory = TempDirectory(
delete=not options.no_clean,
kind="install",
globally_managed=True,
)
try:
reqs = self.get_requirements(args, options, finder, session)
# Only when installing is it permitted to use PEP 660.
# In other circumstances (pip wheel, pip download) we generate
# regular (i.e. non editable) metadata and wheels.
for req in reqs:
req.permit_editable_wheels = True
reject_location_related_install_options(reqs,
options.install_options)
preparer = self.make_requirement_preparer(
temp_build_dir=directory,
options=options,
build_tracker=build_tracker,
session=session,
finder=finder,
use_user_site=options.use_user_site,
verbosity=self.verbosity,
)
resolver = self.make_resolver(
preparer=preparer,
finder=finder,
options=options,
wheel_cache=wheel_cache,
use_user_site=options.use_user_site,
ignore_installed=options.ignore_installed,
ignore_requires_python=options.ignore_requires_python,
force_reinstall=options.force_reinstall,
upgrade_strategy=upgrade_strategy,
use_pep517=options.use_pep517,
)
self.trace_basic_info(finder)
requirement_set = resolver.resolve(
reqs, check_supported_wheels=not options.target_dir)
if options.json_report_file:
logger.warning(
"--report is currently an experimental option. "
"The output format may change in a future release "
"without prior warning.")
report = InstallationReport(
requirement_set.requirements_to_install)
if options.json_report_file == "-":
print_json(data=report.to_dict())
else:
with open(options.json_report_file, "w",
encoding="utf-8") as f:
json.dump(report.to_dict(),
f,
indent=2,
ensure_ascii=False)
if options.dry_run:
would_install_items = sorted(
(r.metadata["name"], r.metadata["version"])
for r in requirement_set.requirements_to_install)
if would_install_items:
write_output(
"Would install %s",
" ".join("-".join(item)
for item in would_install_items),
)
return SUCCESS
try:
pip_req = requirement_set.get_requirement("pip")
except KeyError:
modifying_pip = False
else:
# If we're not replacing an already installed pip,
# we're not modifying it.
modifying_pip = pip_req.satisfied_by is None
protect_pip_from_modification_on_windows(
modifying_pip=modifying_pip)
check_binary_allowed = get_check_binary_allowed(
finder.format_control)
reqs_to_build = [
r for r in requirement_set.requirements.values()
if should_build_for_install_command(r, check_binary_allowed)
]
_, build_failures = build(
reqs_to_build,
wheel_cache=wheel_cache,
verify=True,
build_options=[],
global_options=[],
)
# If we're using PEP 517, we cannot do a legacy setup.py install
# so we fail here.
pep517_build_failure_names: List[str] = [
r.name for r in build_failures if r.use_pep517 # type: ignore
]
if pep517_build_failure_names:
raise InstallationError(
"Could not build wheels for {}, which is required to "
"install pyproject.toml-based projects".format(
", ".join(pep517_build_failure_names)))
# For now, we just warn about failures building legacy
# requirements, as we'll fall through to a setup.py install for
# those.
for r in build_failures:
if not r.use_pep517:
r.legacy_install_reason = 8368
to_install = resolver.get_installation_order(requirement_set)
# Check for conflicts in the package set we're installing.
conflicts: Optional[ConflictDetails] = None
should_warn_about_conflicts = (not options.ignore_dependencies
and options.warn_about_conflicts)
if should_warn_about_conflicts:
conflicts = self._determine_conflicts(to_install)
# Don't warn about script install locations if
# --target or --prefix has been specified
warn_script_location = options.warn_script_location
if options.target_dir or options.prefix_path:
warn_script_location = False
installed = install_given_reqs(
to_install,
install_options,
global_options,
root=options.root_path,
home=target_temp_dir_path,
prefix=options.prefix_path,
warn_script_location=warn_script_location,
use_user_site=options.use_user_site,
pycompile=options.compile,
)
lib_locations = get_lib_location_guesses(
user=options.use_user_site,
home=target_temp_dir_path,
root=options.root_path,
prefix=options.prefix_path,
isolated=options.isolated_mode,
)
env = get_environment(lib_locations)
installed.sort(key=operator.attrgetter("name"))
items = []
for result in installed:
item = result.name
try:
installed_dist = env.get_distribution(item)
if installed_dist is not None:
item = f"{item}-{installed_dist.version}"
except Exception:
pass
items.append(item)
if conflicts is not None:
self._warn_about_conflicts(
conflicts,
resolver_variant=self.determine_resolver_variant(options),
)
installed_desc = " ".join(items)
if installed_desc:
write_output(
"Successfully installed %s",
installed_desc,
)
except OSError as error:
show_traceback = self.verbosity >= 1
message = create_os_error_message(
error,
show_traceback,
options.use_user_site,
)
logger.error(message, exc_info=show_traceback) # noqa
return ERROR
if options.target_dir:
assert target_temp_dir
self._handle_target_dir(options.target_dir, target_temp_dir,
options.upgrade)
if options.root_user_action == "warn":
warn_if_run_as_root()
return SUCCESS
# If a file path is specified with extras, strip off the extras.
url_no_extras, extras = _strip_extras(url)
if os.path.isdir(url_no_extras):
if not os.path.exists(os.path.join(url_no_extras, 'setup.py')):
msg = (
'File "setup.py" not found. Directory cannot be installed '
'in editable mode: {}'.format(os.path.abspath(url_no_extras))
)
pyproject_path = make_pyproject_path(url_no_extras)
if os.path.isfile(pyproject_path):
msg += (
'\n(A "pyproject.toml" file was found, but editable '
'mode currently requires a setup.py based build.)'
)
raise InstallationError(msg)
# Treating it as code that has already been checked out
url_no_extras = path_to_url(url_no_extras)
if url_no_extras.lower().startswith('file:'):
package_name = Link(url_no_extras).egg_fragment
if extras:
return (
package_name,
url_no_extras,
Requirement("placeholder" + extras.lower()).extras,
)
else:
<<<<<<< HEAD
return package_name, url_no_extras, None
def add_requirement(self,
install_req,
parent_req_name=None,
extras_requested=None):
"""Add install_req as a requirement to install.
:param parent_req_name: The name of the requirement that needed this
added. The name is used because when multiple unnamed requirements
resolve to the same name, we could otherwise end up with dependency
links that point outside the Requirements set. parent_req must
already be added. Note that None implies that this is a user
supplied requirement, vs an inferred one.
:param extras_requested: an iterable of extras used to evaluate the
environment markers.
:return: Additional requirements to scan. That is either [] if
the requirement is not applicable, or [install_req] if the
requirement is applicable and has just been added.
"""
name = install_req.name
if not install_req.match_markers(extras_requested):
logger.info(
"Ignoring %s: markers '%s' don't match your "
"environment", install_req.name, install_req.markers)
return [], None
# This check has to come after we filter requirements with the
# environment markers.
if install_req.link and install_req.link.is_wheel:
wheel = Wheel(install_req.link.filename)
if not wheel.supported():
raise InstallationError(
"%s is not a supported wheel on this platform." %
wheel.filename)
# This next bit is really a sanity check.
assert install_req.is_direct == (parent_req_name is None), (
"a direct req shouldn't have a parent and also, "
"a non direct req should have a parent")
if not name:
# url or path requirement w/o an egg fragment
self.unnamed_requirements.append(install_req)
return [install_req], None
else:
try:
existing_req = self.get_requirement(name)
except KeyError:
existing_req = None
if (parent_req_name is None and existing_req
and not existing_req.constraint
and existing_req.extras == install_req.extras
and not existing_req.req.specifier
== install_req.req.specifier):
raise InstallationError(
'Double requirement given: %s (already in %s, name=%r)' %
(install_req, existing_req, name))
if not existing_req:
# Add requirement
self.requirements[name] = install_req
# FIXME: what about other normalizations? E.g., _ vs. -?
if name.lower() != name:
self.requirement_aliases[name.lower()] = name
result = [install_req]
else:
# Assume there's no need to scan, and that we've already
# encountered this for scanning.
result = []
if not install_req.constraint and existing_req.constraint:
if (install_req.link and
not (existing_req.link and install_req.link.path
== existing_req.link.path)):
self.reqs_to_cleanup.append(install_req)
raise InstallationError(
"Could not satisfy constraints for '%s': "
"installation from path or url cannot be "
"constrained to a version" % name, )
# If we're now installing a constraint, mark the existing
# object for real installation.
existing_req.constraint = False
existing_req.extras = tuple(
sorted(
set(existing_req.extras).union(
set(install_req.extras))))
logger.debug("Setting %s extras to: %s", existing_req,
existing_req.extras)
# And now we need to scan this.
result = [existing_req]
# Canonicalise to the already-added object for the backref
# check below.
install_req = existing_req
# We return install_req here to allow for the caller to add it to
# the dependency information for the parent package.
return result, install_req
def assert_no_path_traversal(dest_dir_path: str, target_path: str) -> None:
if not is_within_directory(dest_dir_path, target_path):
message = ("The wheel {!r} has a file {!r} trying to install"
" outside the target directory {!r}")
raise InstallationError(
message.format(wheel_path, target_path, dest_dir_path))
def req_error_context(req_description: str) -> Generator[None, None, None]:
try:
yield
except InstallationError as e:
message = "For req: {}. {}".format(req_description, e.args[0])
raise InstallationError(message) from e
def run(self, options, args):
# type: (Values, List[Any]) -> int
cmdoptions.check_install_build_global(options)
upgrade_strategy = "to-satisfy-only"
if options.upgrade:
upgrade_strategy = options.upgrade_strategy
if options.build_dir:
options.build_dir = os.path.abspath(options.build_dir)
cmdoptions.check_dist_restriction(options, check_target=True)
options.src_dir = os.path.abspath(options.src_dir)
install_options = options.install_options or []
if options.use_user_site:
if options.prefix_path:
raise CommandError(
"Can not combine '--user' and '--prefix' as they imply "
"different installation locations")
if virtualenv_no_global():
raise InstallationError(
"Can not perform a '--user' install. User site-packages "
"are not visible in this virtualenv.")
install_options.append('--user')
install_options.append('--prefix=')
target_temp_dir = None # type: Optional[TempDirectory]
target_temp_dir_path = None # type: Optional[str]
if options.target_dir:
options.ignore_installed = True
options.target_dir = os.path.abspath(options.target_dir)
if (os.path.exists(options.target_dir)
and not os.path.isdir(options.target_dir)):
raise CommandError(
"Target path exists but is not a directory, will not "
"continue.")
# Create a target directory for using with the target option
target_temp_dir = TempDirectory(kind="target")
target_temp_dir_path = target_temp_dir.path
install_options.append('--home=' + target_temp_dir_path)
global_options = options.global_options or []
session = self.get_default_session(options)
target_python = make_target_python(options)
finder = self._build_package_finder(
options=options,
session=session,
target_python=target_python,
ignore_requires_python=options.ignore_requires_python,
)
build_delete = (not (options.no_clean or options.build_dir))
wheel_cache = WheelCache(options.cache_dir, options.format_control)
if options.cache_dir and not check_path_owner(options.cache_dir):
logger.warning(
"The directory '%s' or its parent directory is not owned "
"by the current user and caching wheels has been "
"disabled. check the permissions and owner of that "
"directory. If executing pip with sudo, you may want "
"sudo's -H flag.",
options.cache_dir,
)
options.cache_dir = None
with RequirementTracker() as req_tracker, TempDirectory(
options.build_dir, delete=build_delete,
kind="install") as directory:
requirement_set = RequirementSet(
require_hashes=options.require_hashes,
check_supported_wheels=not options.target_dir,
)
try:
self.populate_requirement_set(requirement_set, args, options,
finder, session, wheel_cache)
preparer = self.make_requirement_preparer(
temp_build_dir=directory,
options=options,
req_tracker=req_tracker,
)
resolver = self.make_resolver(
preparer=preparer,
finder=finder,
session=session,
options=options,
wheel_cache=wheel_cache,
use_user_site=options.use_user_site,
ignore_installed=options.ignore_installed,
ignore_requires_python=options.ignore_requires_python,
force_reinstall=options.force_reinstall,
upgrade_strategy=upgrade_strategy,
use_pep517=options.use_pep517,
)
resolver.resolve(requirement_set)
try:
pip_req = requirement_set.get_requirement("pip")
except KeyError:
modifying_pip = None
else:
# If we're not replacing an already installed pip,
# we're not modifying it.
modifying_pip = pip_req.satisfied_by is None
protect_pip_from_modification_on_windows(
modifying_pip=modifying_pip)
check_binary_allowed = get_check_binary_allowed(
finder.format_control)
# Consider legacy and PEP517-using requirements separately
legacy_requirements = []
pep517_requirements = []
for req in requirement_set.requirements.values():
if req.use_pep517:
pep517_requirements.append(req)
else:
legacy_requirements.append(req)
wheel_builder = WheelBuilder(
preparer,
wheel_cache,
build_options=[],
global_options=[],
check_binary_allowed=check_binary_allowed,
)
build_failures = build_wheels(
builder=wheel_builder,
pep517_requirements=pep517_requirements,
legacy_requirements=legacy_requirements,
)
# If we're using PEP 517, we cannot do a direct install
# so we fail here.
if build_failures:
raise InstallationError(
"Could not build wheels for {} which use"
" PEP 517 and cannot be installed directly".format(
", ".join(r.name for r in build_failures)))
to_install = resolver.get_installation_order(requirement_set)
# Consistency Checking of the package set we're installing.
should_warn_about_conflicts = (not options.ignore_dependencies
and
options.warn_about_conflicts)
if should_warn_about_conflicts:
self._warn_about_conflicts(to_install)
# Don't warn about script install locations if
# --target has been specified
warn_script_location = options.warn_script_location
if options.target_dir:
warn_script_location = False
installed = install_given_reqs(
to_install,
install_options,
global_options,
root=options.root_path,
home=target_temp_dir_path,
prefix=options.prefix_path,
pycompile=options.compile,
warn_script_location=warn_script_location,
use_user_site=options.use_user_site,
)
lib_locations = get_lib_location_guesses(
user=options.use_user_site,
home=target_temp_dir_path,
root=options.root_path,
prefix=options.prefix_path,
isolated=options.isolated_mode,
)
working_set = pkg_resources.WorkingSet(lib_locations)
reqs = sorted(installed, key=operator.attrgetter('name'))
items = []
for req in reqs:
item = req.name
try:
installed_version = get_installed_version(
req.name, working_set=working_set)
if installed_version:
item += '-' + installed_version
except Exception:
pass
items.append(item)
installed_desc = ' '.join(items)
if installed_desc:
write_output(
'Successfully installed %s',
installed_desc,
)
except EnvironmentError as error:
show_traceback = (self.verbosity >= 1)
message = create_env_error_message(
error,
show_traceback,
options.use_user_site,
)
logger.error(message, exc_info=show_traceback)
return ERROR
except PreviousBuildDirError:
options.no_clean = True
raise
finally:
# Clean up
if not options.no_clean:
requirement_set.cleanup_files()
wheel_cache.cleanup()
if options.target_dir:
self._handle_target_dir(options.target_dir, target_temp_dir,
options.upgrade)
return SUCCESS
def parse_editable(editable_req):
# type: (str) -> Tuple[Optional[str], str, Set[str]]
"""Parses an editable requirement into:
- a requirement name
- an URL
- extras
- editable options
Accepted requirements:
svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
.[some_extra]
"""
url = editable_req
# If a file path is specified with extras, strip off the extras.
url_no_extras, extras = _strip_extras(url)
if os.path.isdir(url_no_extras):
if not os.path.exists(os.path.join(url_no_extras, "setup.py")):
msg = ('File "setup.py" not found. Directory cannot be installed '
"in editable mode: {}".format(
os.path.abspath(url_no_extras)))
pyproject_path = make_pyproject_path(url_no_extras)
if os.path.isfile(pyproject_path):
msg += ('\n(A "pyproject.toml" file was found, but editable '
"mode currently requires a setup.py based build.)")
raise InstallationError(msg)
# Treating it as code that has already been checked out
url_no_extras = path_to_url(url_no_extras)
if url_no_extras.lower().startswith("file:"):
package_name = Link(url_no_extras).egg_fragment
if extras:
return (
package_name,
url_no_extras,
Requirement("placeholder" + extras.lower()).extras,
)
else:
return package_name, url_no_extras, set()
for version_control in vcs:
if url.lower().startswith(f"{version_control}:"):
url = f"{version_control}+{url}"
break
link = Link(url)
if not link.is_vcs:
backends = ", ".join(vcs.all_schemes)
raise InstallationError(
f"{editable_req} is not a valid editable requirement. "
f"It should either be a path to a local project or a VCS URL "
f"(beginning with {backends}).")
package_name = link.egg_fragment
if not package_name:
raise InstallationError(
"Could not detect requirement name for '{}', please specify one "
"with #egg=your_package_name".format(editable_req))
return package_name, url, set()
def parse_req_from_line(name, line_source):
# type: (str, Optional[str]) -> RequirementParts
if is_url(name):
marker_sep = "; "
else:
marker_sep = ";"
if marker_sep in name:
name, markers_as_string = name.split(marker_sep, 1)
markers_as_string = markers_as_string.strip()
if not markers_as_string:
markers = None
else:
markers = Marker(markers_as_string)
else:
markers = None
name = name.strip()
req_as_string = None
path = os.path.normpath(os.path.abspath(name))
link = None
extras_as_string = None
if is_url(name):
link = Link(name)
else:
p, extras_as_string = _strip_extras(path)
url = _get_url_from_path(p, name)
if url is not None:
link = Link(url)
# it's a local file, dir, or url
if link:
# Handle relative file URLs
if link.scheme == "file" and re.search(r"\.\./", link.url):
link = Link(
path_to_url(os.path.normpath(os.path.abspath(link.path))))
# wheel file
if link.is_wheel:
wheel = Wheel(link.filename) # can raise InvalidWheelFilename
req_as_string = "{wheel.name}=={wheel.version}".format(**locals())
else:
# set the req to the egg fragment. when it's not there, this
# will become an 'unnamed' requirement
req_as_string = link.egg_fragment
# a requirement specifier
else:
req_as_string = name
extras = convert_extras(extras_as_string)
def with_source(text):
# type: (str) -> str
if not line_source:
return text
return f"{text} (from {line_source})"
if req_as_string is not None:
try:
req = Requirement(req_as_string)
except InvalidRequirement:
if os.path.sep in req_as_string:
add_msg = "It looks like a path."
add_msg += deduce_helpful_msg(req_as_string)
elif "=" in req_as_string and not any(op in req_as_string
for op in operators):
add_msg = "= is not a valid operator. Did you mean == ?"
else:
add_msg = ""
msg = with_source(f"Invalid requirement: {req_as_string!r}")
if add_msg:
msg += f"\nHint: {add_msg}"
raise InstallationError(msg)
else:
# Deprecate extras after specifiers: "name>=1.0[extras]"
# This currently works by accident because _strip_extras() parses
# any extras in the end of the string and those are saved in
# RequirementParts
for spec in req.specifier:
spec_str = str(spec)
if spec_str.endswith("]"):
msg = f"Extras after version '{spec_str}'."
raise InstallationError(msg)
else:
req = None
return RequirementParts(req, link, markers, extras)
def resolve(self, root_reqs, check_supported_wheels):
# type: (List[InstallRequirement], bool) -> RequirementSet
constraints = {} # type: Dict[str, Constraint]
user_requested = set() # type: Set[str]
requirements = []
for req in root_reqs:
if req.constraint:
# Ensure we only accept valid constraints
problem = check_invalid_constraint_type(req)
if problem:
raise InstallationError(problem)
if not req.match_markers():
continue
name = canonicalize_name(req.name)
if name in constraints:
constraints[name] &= req
else:
constraints[name] = Constraint.from_ireq(req)
else:
if req.user_supplied and req.name:
user_requested.add(canonicalize_name(req.name))
r = self.factory.make_requirement_from_install_req(
req,
requested_extras=(),
)
if r is not None:
requirements.append(r)
provider = PipProvider(
factory=self.factory,
constraints=constraints,
ignore_dependencies=self.ignore_dependencies,
upgrade_strategy=self.upgrade_strategy,
user_requested=user_requested,
)
reporter = BaseReporter()
resolver = RLResolver(provider, reporter)
try:
try_to_avoid_resolution_too_deep = 2000000
self._result = resolver.resolve(
requirements,
max_rounds=try_to_avoid_resolution_too_deep,
)
except ResolutionImpossible as e:
error = self.factory.get_installation_error(e)
six.raise_from(error, e)
req_set = RequirementSet(check_supported_wheels=check_supported_wheels)
for candidate in self._result.mapping.values():
ireq = candidate.get_install_requirement()
if ireq is None:
continue
# Check if there is already an installation under the same name,
# and set a flag for later stages to uninstall it, if needed.
# * There isn't, good -- no uninstalltion needed.
# * The --force-reinstall flag is set. Always reinstall.
# * The installation is different in version or editable-ness, so
# we need to uninstall it to install the new distribution.
# * The installed version is the same as the pending distribution.
# Skip this distrubiton altogether to save work.
installed_dist = self.factory.get_dist_to_uninstall(candidate)
if installed_dist is None:
ireq.should_reinstall = False
elif self.factory.force_reinstall:
ireq.should_reinstall = True
elif installed_dist.parsed_version != candidate.version:
ireq.should_reinstall = True
elif dist_is_editable(installed_dist) != candidate.is_editable:
ireq.should_reinstall = True
else:
continue
link = candidate.source_link
if link and link.is_yanked:
# The reason can contain non-ASCII characters, Unicode
# is required for Python 2.
msg = (
u'The candidate selected for download or install is a '
u'yanked version: {name!r} candidate (version {version} '
u'at {link})\nReason for being yanked: {reason}').format(
name=candidate.name,
version=candidate.version,
link=link,
reason=link.yanked_reason or u'<none given>',
)
logger.warning(msg)
req_set.add_named_requirement(ireq)
return req_set
def parse_editable(editable_req):
"""Parses an editable requirement into:
- a requirement name
- an URL
- extras
- editable options
Accepted requirements:
svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
.[some_extra]
"""
from pip._internal.index import Link
url = editable_req
# If a file path is specified with extras, strip off the extras.
url_no_extras, extras = _strip_extras(url)
if os.path.isdir(url_no_extras):
if not os.path.exists(os.path.join(url_no_extras, 'setup.py')):
raise InstallationError(
"Directory %r is not installable. File 'setup.py' not found." %
url_no_extras)
# Treating it as code that has already been checked out
url_no_extras = path_to_url(url_no_extras)
if url_no_extras.lower().startswith('file:'):
package_name = Link(url_no_extras).egg_fragment
if extras:
return (
package_name,
url_no_extras,
Requirement("placeholder" + extras.lower()).extras,
)
else:
return package_name, url_no_extras, None
for version_control in vcs:
if url.lower().startswith('%s:' % version_control):
url = '%s+%s' % (version_control, url)
break
if '+' not in url:
raise InstallationError(
'%s should either be a path to a local project or a VCS url '
'beginning with svn+, git+, hg+, or bzr+' % editable_req)
vc_type = url.split('+', 1)[0].lower()
if not vcs.get_backend(vc_type):
error_message = 'For --editable=%s only ' % editable_req + \
', '.join([backend.name + '+URL' for backend in vcs.backends]) + \
' is currently supported'
raise InstallationError(error_message)
package_name = Link(url).egg_fragment
if not package_name:
raise InstallationError(
"Could not detect requirement name for '%s', please specify one "
"with #egg=your_package_name" % editable_req)
return _strip_postfix(package_name), url, None
def untar_file(filename, location):
# type: (str, str) -> None
"""
Untar the file (with path `filename`) to the destination `location`.
All files are written based on system defaults and umask (i.e. permissions
are not preserved), except that regular file members with any execute
permissions (user, group, or world) have "chmod +x" applied after being
written. Note that for windows, any execute changes using os.chmod are
no-ops per the python docs.
"""
ensure_dir(location)
if filename.lower().endswith('.gz') or filename.lower().endswith('.tgz'):
mode = 'r:gz'
elif filename.lower().endswith(BZ2_EXTENSIONS):
mode = 'r:bz2'
elif filename.lower().endswith(XZ_EXTENSIONS):
mode = 'r:xz'
elif filename.lower().endswith('.tar'):
mode = 'r'
else:
logger.warning(
'Cannot determine compression type for file %s',
filename,
)
mode = 'r:*'
tar = tarfile.open(filename, mode)
try:
leading = has_leading_dir([member.name for member in tar.getmembers()])
for member in tar.getmembers():
fn = member.name
if leading:
# https://github.com/python/mypy/issues/1174
fn = split_leading_dir(fn)[1] # type: ignore
path = os.path.join(location, fn)
if not is_within_directory(location, path):
message = (
'The tar file ({}) has a file ({}) trying to install '
'outside target directory ({})')
raise InstallationError(
message.format(filename, path, location))
if member.isdir():
ensure_dir(path)
elif member.issym():
try:
# https://github.com/python/typeshed/issues/2673
tar._extract_member(member, path) # type: ignore
except Exception as exc:
# Some corrupt tar files seem to produce this
# (specifically bad symlinks)
logger.warning(
'In the tar file %s the member %s is invalid: %s',
filename,
member.name,
exc,
)
continue
else:
try:
fp = tar.extractfile(member)
except (KeyError, AttributeError) as exc:
# Some corrupt tar files seem to produce this
# (specifically bad symlinks)
logger.warning(
'In the tar file %s the member %s is invalid: %s',
filename,
member.name,
exc,
)
continue
ensure_dir(os.path.dirname(path))
assert fp is not None
with open(path, 'wb') as destfp:
shutil.copyfileobj(fp, destfp)
fp.close()
# Update the timestamp (useful for cython compiled files)
# https://github.com/python/typeshed/issues/2673
tar.utime(member, path) # type: ignore
# member have any execute permissions for user/group/world?
if member.mode & 0o111:
set_extracted_file_to_default_mode_plus_executable(path)
finally:
tar.close()
def from_line(cls,
name,
comes_from=None,
isolated=False,
options=None,
wheel_cache=None,
constraint=False):
"""Creates an InstallRequirement from a name, which might be a
requirement, directory containing 'setup.py', filename, or URL.
"""
from pip._internal.index import Link
if is_url(name):
marker_sep = '; '
else:
marker_sep = ';'
if marker_sep in name:
name, markers = name.split(marker_sep, 1)
markers = markers.strip()
if not markers:
markers = None
else:
markers = Marker(markers)
else:
markers = None
name = name.strip()
req = None
path = os.path.normpath(os.path.abspath(name))
link = None
extras = None
if is_url(name):
link = Link(name)
else:
p, extras = _strip_extras(path)
looks_like_dir = os.path.isdir(p) and (os.path.sep in name or
(os.path.altsep is not None
and os.path.altsep in name)
or name.startswith('.'))
if looks_like_dir:
if not is_installable_dir(p):
raise InstallationError(
"Directory %r is not installable. File 'setup.py' "
"not found." % name)
link = Link(path_to_url(p))
elif is_archive_file(p):
if not os.path.isfile(p):
logger.warning(
'Requirement %r looks like a filename, but the '
'file does not exist', name)
link = Link(path_to_url(p))
# it's a local file, dir, or url
if link:
# Handle relative file URLs
if link.scheme == 'file' and re.search(r'\.\./', link.url):
link = Link(
path_to_url(os.path.normpath(os.path.abspath(link.path))))
# wheel file
if link.is_wheel:
wheel = Wheel(link.filename) # can raise InvalidWheelFilename
req = "%s==%s" % (wheel.name, wheel.version)
else:
# set the req to the egg fragment. when it's not there, this
# will become an 'unnamed' requirement
req = link.egg_fragment
# a requirement specifier
else:
req = name
if extras:
extras = Requirement("placeholder" + extras.lower()).extras
else:
extras = ()
if req is not None:
try:
req = Requirement(req)
except InvalidRequirement:
if os.path.sep in req:
add_msg = "It looks like a path."
add_msg += deduce_helpful_msg(req)
elif '=' in req and not any(op in req for op in operators):
add_msg = "= is not a valid operator. Did you mean == ?"
else:
add_msg = traceback.format_exc()
raise InstallationError("Invalid requirement: '%s'\n%s" %
(req, add_msg))
return cls(
req,
comes_from,
link=link,
markers=markers,
isolated=isolated,
options=options if options else {},
wheel_cache=wheel_cache,
constraint=constraint,
extras=extras,
)
def load_pyproject_toml(
use_pep517, # type: Optional[bool]
pyproject_toml, # type: str
setup_py, # type: str
req_name # type: str
):
# type: (...) -> Optional[Tuple[List[str], str, List[str]]]
"""Load the pyproject.toml file.
Parameters:
use_pep517 - Has the user requested PEP 517 processing? None
means the user hasn't explicitly specified.
pyproject_toml - Location of the project's pyproject.toml file
setup_py - Location of the project's setup.py file
req_name - The name of the requirement we're processing (for
error reporting)
Returns:
None if we should use the legacy code path, otherwise a tuple
(
requirements from pyproject.toml,
name of PEP 517 backend,
requirements we should check are installed after setting
up the build environment
)
"""
has_pyproject = os.path.isfile(pyproject_toml)
has_setup = os.path.isfile(setup_py)
if has_pyproject:
with io.open(pyproject_toml, encoding="utf-8") as f:
pp_toml = pytoml.load(f)
build_system = pp_toml.get("build-system")
else:
build_system = None
# The following cases must use PEP 517
# We check for use_pep517 being non-None and falsey because that means
# the user explicitly requested --no-use-pep517. The value 0 as
# opposed to False can occur when the value is provided via an
# environment variable or config file option (due to the quirk of
# strtobool() returning an integer in pip's configuration code).
if has_pyproject and not has_setup:
if use_pep517 is not None and not use_pep517:
raise InstallationError("Disabling PEP 517 processing is invalid: "
"project does not have a setup.py")
use_pep517 = True
elif build_system and "build-backend" in build_system:
if use_pep517 is not None and not use_pep517:
raise InstallationError("Disabling PEP 517 processing is invalid: "
"project specifies a build backend of {} "
"in pyproject.toml".format(
build_system["build-backend"]))
use_pep517 = True
# If we haven't worked out whether to use PEP 517 yet,
# and the user hasn't explicitly stated a preference,
# we do so if the project has a pyproject.toml file.
elif use_pep517 is None:
use_pep517 = has_pyproject
# At this point, we know whether we're going to use PEP 517.
assert use_pep517 is not None
# If we're using the legacy code path, there is nothing further
# for us to do here.
if not use_pep517:
return None
if build_system is None:
# Either the user has a pyproject.toml with no build-system
# section, or the user has no pyproject.toml, but has opted in
# explicitly via --use-pep517.
# In the absence of any explicit backend specification, we
# assume the setuptools backend that most closely emulates the
# traditional direct setup.py execution, and require wheel and
# a version of setuptools that supports that backend.
build_system = {
"requires": ["setuptools>=40.8.0", "wheel"],
"build-backend": "setuptools.build_meta:__legacy__",
}
# If we're using PEP 517, we have build system information (either
# from pyproject.toml, or defaulted by the code above).
# Note that at this point, we do not know if the user has actually
# specified a backend, though.
assert build_system is not None
# Ensure that the build-system section in pyproject.toml conforms
# to PEP 518.
error_template = (
"{package} has a pyproject.toml file that does not comply "
"with PEP 518: {reason}")
# Specifying the build-system table but not the requires key is invalid
if "requires" not in build_system:
raise InstallationError(
error_template.format(
package=req_name,
reason=(
"it has a 'build-system' table but not "
"'build-system.requires' which is mandatory in the table"
)))
# Error out if requires is not a list of strings
requires = build_system["requires"]
if not _is_list_of_str(requires):
raise InstallationError(
error_template.format(
package=req_name,
reason="'build-system.requires' is not a list of strings.",
))
backend = build_system.get("build-backend")
check = [] # type: List[str]
if backend is None:
# If the user didn't specify a backend, we assume they want to use
# the setuptools backend. But we can't be sure they have included
# a version of setuptools which supplies the backend, or wheel
# (which is needed by the backend) in their requirements. So we
# make a note to check that those requirements are present once
# we have set up the environment.
# This is quite a lot of work to check for a very specific case. But
# the problem is, that case is potentially quite layouts - projects that
# adopted PEP 518 early for the ability to specify requirements to
# execute setup.py, but never considered needing to mention the build
# tools themselves. The original PEP 518 code had a similar check (but
# implemented in a different way).
backend = "setuptools.build_meta:__legacy__"
check = ["setuptools>=40.8.0", "wheel"]
return (requires, backend, check)
def prepare_linked_requirement(
self,
req, # type: InstallRequirement
session, # type: PipSession
finder, # type: PackageFinder
upgrade_allowed, # type: bool
require_hashes # type: bool
):
# type: (...) -> DistAbstraction
"""Prepare a requirement that would be obtained from req.link
"""
# TODO: Breakup into smaller functions
if req.link and req.link.scheme == 'file':
path = url_to_path(req.link.url)
logger.info('Processing %s', display_path(path))
else:
logger.info('Collecting %s', req)
with indent_log():
# @@ if filesystem packages are not marked
# editable in a req, a non deterministic error
# occurs when the script attempts to unpack the
# build directory
req.ensure_has_source_dir(self.build_dir)
# If a checkout exists, it's unwise to keep going. version
# inconsistencies are logged later, but do not fail the
# installation.
# FIXME: this won't upgrade when there's an existing
# package unpacked in `req.source_dir`
# package unpacked in `req.source_dir`
if os.path.exists(os.path.join(req.source_dir, 'setup.py')):
raise PreviousBuildDirError(
"pip can't proceed with requirements '%s' due to a"
" pre-existing build directory (%s). This is "
"likely due to a previous installation that failed"
". pip is being responsible and not assuming it "
"can delete this. Please delete it and try again."
% (req, req.source_dir)
)
req.populate_link(finder, upgrade_allowed, require_hashes)
# We can't hit this spot and have populate_link return None.
# req.satisfied_by is None here (because we're
# guarded) and upgrade has no impact except when satisfied_by
# is not None.
# Then inside find_requirement existing_applicable -> False
# If no new versions are found, DistributionNotFound is raised,
# otherwise a result is guaranteed.
assert req.link
link = req.link
# Now that we have the real link, we can tell what kind of
# requirements we have and raise some more informative errors
# than otherwise. (For example, we can raise VcsHashUnsupported
# for a VCS URL rather than HashMissing.)
if require_hashes:
# We could check these first 2 conditions inside
# unpack_url and save repetition of conditions, but then
# we would report less-useful error messages for
# unhashable requirements, complaining that there's no
# hash provided.
if is_vcs_url(link):
raise VcsHashUnsupported()
elif is_file_url(link) and is_dir_url(link):
raise DirectoryUrlHashUnsupported()
if not req.original_link and not req.is_pinned:
# Unpinned packages are asking for trouble when a new
# version is uploaded. This isn't a security check, but
# it saves users a surprising hash mismatch in the
# future.
#
# file:/// URLs aren't pinnable, so don't complain
# about them not being pinned.
raise HashUnpinned()
hashes = req.hashes(trust_internet=not require_hashes)
if require_hashes and not hashes:
# Known-good hashes are missing for this requirement, so
# shim it with a facade object that will provoke hash
# computation and then raise a HashMissing exception
# showing the user what the hash should be.
hashes = MissingHashes()
try:
download_dir = self.download_dir
# We always delete unpacked sdists after pip ran.
autodelete_unpacked = True
if req.link.is_wheel and self.wheel_download_dir:
# when doing 'pip wheel` we download wheels to a
# dedicated dir.
download_dir = self.wheel_download_dir
if req.link.is_wheel:
if download_dir:
# When downloading, we only unpack wheels to get
# metadata.
autodelete_unpacked = True
else:
# When installing a wheel, we use the unpacked
# wheel.
autodelete_unpacked = False
unpack_url(
req.link, req.source_dir,
download_dir, autodelete_unpacked,
session=session, hashes=hashes,
progress_bar=self.progress_bar
)
except requests.HTTPError as exc:
logger.critical(
'Could not install requirement %s because of error %s',
req,
exc,
)
raise InstallationError(
'Could not install requirement %s because of HTTP '
'error %s for URL %s' %
(req, exc, req.link)
)
abstract_dist = make_abstract_dist(req)
with self.req_tracker.track(req):
abstract_dist.prep_for_dist(finder, self.build_isolation)
if self._download_should_save:
# Make a .zip of the source_dir we already created.
if not req.link.is_artifact:
req.archive(self.download_dir)
return abstract_dist
def install_req_from_line(
name, # type: str
comes_from=None, # type: Optional[Union[str, InstallRequirement]]
use_pep517=None, # type: Optional[bool]
isolated=False, # type: bool
options=None, # type: Optional[Dict[str, Any]]
wheel_cache=None, # type: Optional[WheelCache]
constraint=False, # type: bool
):
# type: (...) -> InstallRequirement
"""Creates an InstallRequirement from a name, which might be a
requirement, directory containing 'setup.py', filename, or URL.
"""
if is_url(name):
marker_sep = "; "
else:
marker_sep = ";"
if marker_sep in name:
name, markers_as_string = name.split(marker_sep, 1)
markers_as_string = markers_as_string.strip()
if not markers_as_string:
markers = None
else:
markers = Marker(markers_as_string)
else:
markers = None
name = name.strip()
req_as_string = None
path = os.path.normpath(os.path.abspath(name))
link = None
extras_as_string = None
if is_url(name):
link = Link(name)
else:
p, extras_as_string = _strip_extras(path)
looks_like_dir = os.path.isdir(p) and (os.path.sep in name or
(os.path.altsep is not None
and os.path.altsep in name)
or name.startswith("."))
if looks_like_dir:
if not is_installable_dir(p):
raise InstallationError(
"Directory %r is not installable. Neither 'setup.py' "
"nor 'pyproject.toml' found." % name)
link = Link(path_to_url(p))
elif is_archive_file(p):
if not os.path.isfile(p):
logger.warning(
"Requirement %r looks like a filename, but the "
"file does not exist",
name,
)
link = Link(path_to_url(p))
# it's a local file, dir, or url
if link:
# Handle relative file URLs
if link.scheme == "file" and re.search(r"\.\./", link.url):
link = Link(
path_to_url(os.path.normpath(os.path.abspath(link.path))))
# wheel file
if link.is_wheel:
wheel = Wheel(link.filename) # can raise InvalidWheelFilename
req_as_string = "%s==%s" % (wheel.name, wheel.version)
else:
# set the req to the egg fragment. when it's not there, this
# will become an 'unnamed' requirement
req_as_string = link.egg_fragment
# a requirement specifier
else:
req_as_string = name
if extras_as_string:
extras = Requirement("placeholder" + extras_as_string.lower()).extras
else:
extras = ()
if req_as_string is not None:
try:
req = Requirement(req_as_string)
except InvalidRequirement:
if os.path.sep in req_as_string:
add_msg = "It looks like a path."
add_msg += deduce_helpful_msg(req_as_string)
elif "=" in req_as_string and not any(op in req_as_string
for op in operators):
add_msg = "= is not a valid operator. Did you mean == ?"
else:
add_msg = ""
raise InstallationError("Invalid requirement: '%s'\n%s" %
(req_as_string, add_msg))
else:
req = None
return InstallRequirement(
req,
comes_from,
link=link,
markers=markers,
use_pep517=use_pep517,
isolated=isolated,
options=options if options else {},
wheel_cache=wheel_cache,
constraint=constraint,
extras=extras,
)
def call_subprocess(
cmd, # type: List[str]
show_stdout=True, # type: bool
cwd=None, # type: Optional[str]
on_returncode='raise', # type: str
extra_ok_returncodes=None, # type: Optional[Iterable[int]]
command_desc=None, # type: Optional[str]
extra_environ=None, # type: Optional[Mapping[str, Any]]
unset_environ=None, # type: Optional[Iterable[str]]
spinner=None # type: Optional[SpinnerInterface]
):
# type: (...) -> Optional[Text]
"""
Args:
extra_ok_returncodes: an iterable of integer return codes that are
acceptable, in addition to 0. Defaults to None, which means [].
unset_environ: an iterable of environment variable names to unset
prior to calling subprocess.Popen().
"""
if extra_ok_returncodes is None:
extra_ok_returncodes = []
if unset_environ is None:
unset_environ = []
# This function's handling of subprocess output is confusing and I
# previously broke it terribly, so as penance I will write a long comment
# explaining things.
#
# The obvious thing that affects output is the show_stdout=
# kwarg. show_stdout=True means, let the subprocess write directly to our
# stdout. Even though it is nominally the default, it is almost never used
# inside pip (and should not be used in new code without a very good
# reason); as of 2016-02-22 it is only used in a few places inside the VCS
# wrapper code. Ideally we should get rid of it entirely, because it
# creates a lot of complexity here for a rarely used feature.
#
# Most places in pip set show_stdout=False. What this means is:
# - We connect the child stdout to a pipe, which we read.
# - By default, we hide the output but show a spinner -- unless the
# subprocess exits with an error, in which case we show the output.
# - If the --verbose option was passed (= loglevel is DEBUG), then we show
# the output unconditionally. (But in this case we don't want to show
# the output a second time if it turns out that there was an error.)
#
# stderr is always merged with stdout (even if show_stdout=True).
if show_stdout:
stdout = None
else:
stdout = subprocess.PIPE
if command_desc is None:
cmd_parts = []
for part in cmd:
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
cmd_parts.append(part)
command_desc = ' '.join(cmd_parts)
logger.debug("Running command %s", command_desc)
env = os.environ.copy()
if extra_environ:
env.update(extra_environ)
for name in unset_environ:
env.pop(name, None)
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=subprocess.PIPE,
stdout=stdout, cwd=cwd, env=env,
)
proc.stdin.close()
except Exception as exc:
logger.critical(
"Error %s while executing command %s", exc, command_desc,
)
raise
all_output = []
if stdout is not None:
while True:
line = console_to_str(proc.stdout.readline())
if not line:
break
line = line.rstrip()
all_output.append(line + '\n')
if logger.getEffectiveLevel() <= std_logging.DEBUG:
# Show the line immediately
logger.debug(line)
else:
# Update the spinner
if spinner is not None:
spinner.spin()
try:
proc.wait()
finally:
if proc.stdout:
proc.stdout.close()
if spinner is not None:
if proc.returncode:
spinner.finish("error")
else:
spinner.finish("done")
if proc.returncode and proc.returncode not in extra_ok_returncodes:
if on_returncode == 'raise':
if (logger.getEffectiveLevel() > std_logging.DEBUG and
not show_stdout):
logger.info(
'Complete output from command %s:', command_desc,
)
logger.info(
''.join(all_output) +
'\n----------------------------------------'
)
raise InstallationError(
'Command "%s" failed with error code %s in %s'
% (command_desc, proc.returncode, cwd))
elif on_returncode == 'warn':
logger.warning(
'Command "%s" had error code %s in %s',
command_desc, proc.returncode, cwd,
)
elif on_returncode == 'ignore':
pass
else:
raise ValueError('Invalid value: on_returncode=%s' %
repr(on_returncode))
if not show_stdout:
return ''.join(all_output)
return None
def add_requirement(
self,
install_req, # type: InstallRequirement
parent_req_name=None, # type: Optional[str]
extras_requested=None # type: Optional[Iterable[str]]
):
# type: (...) -> Tuple[List[InstallRequirement], Optional[InstallRequirement]]
"""Add install_req as a requirement to install.
:param parent_req_name: The name of the requirement that needed this
added. The name is used because when multiple unnamed requirements
resolve to the same name, we could otherwise end up with dependency
links that point outside the Requirements set. parent_req must
already be added. Note that None implies that this is a user
supplied requirement, vs an inferred one.
:param extras_requested: an iterable of extras used to evaluate the
environment markers.
:return: Additional requirements to scan. That is either [] if
the requirement is not applicable, or [install_req] if the
requirement is applicable and has just been added.
"""
# If the markers do not match, ignore this requirement.
if not install_req.match_markers(extras_requested):
logger.info(
"Ignoring %s: markers '%s' don't match your environment",
install_req.name,
install_req.markers,
)
return [], None
# If the wheel is not supported, raise an error.
# Should check this after filtering out based on environment markers to
# allow specifying different wheels based on the environment/OS, in a
# single requirements file.
if install_req.link and install_req.link.is_wheel:
wheel = Wheel(install_req.link.filename)
tags = compatibility_tags.get_supported()
if (self.check_supported_wheels and not wheel.supported(tags)):
raise InstallationError(
"{} is not a supported wheel on this platform.".format(
wheel.filename))
# This next bit is really a sanity check.
assert not install_req.user_supplied or parent_req_name is None, (
"a user supplied req shouldn't have a parent")
# Unnamed requirements are scanned again and the requirement won't be
# added as a dependency until after scanning.
if not install_req.name:
self.add_unnamed_requirement(install_req)
return [install_req], None
try:
existing_req = self.get_requirement(
install_req.name) # type: Optional[InstallRequirement]
except KeyError:
existing_req = None
has_conflicting_requirement = (
parent_req_name is None and existing_req
and not existing_req.constraint
and existing_req.extras == install_req.extras
and existing_req.req.specifier != install_req.req.specifier)
if has_conflicting_requirement:
raise InstallationError(
"Double requirement given: {} (already in {}, name={!r})".
format(install_req, existing_req, install_req.name))
# When no existing requirement exists, add the requirement as a
# dependency and it will be scanned again after.
if not existing_req:
self.add_named_requirement(install_req)
# We'd want to rescan this requirement later
return [install_req], install_req
# Assume there's no need to scan, and that we've already
# encountered this for scanning.
if install_req.constraint or not existing_req.constraint:
return [], existing_req
does_not_satisfy_constraint = (
install_req.link
and not (existing_req.link
and install_req.link.path == existing_req.link.path))
if does_not_satisfy_constraint:
raise InstallationError("Could not satisfy constraints for '{}': "
"installation from path or url cannot be "
"constrained to a version".format(
install_req.name))
# If we're now installing a constraint, mark the existing
# object for real installation.
existing_req.constraint = False
# If we're now installing a user supplied requirement,
# mark the existing object as such.
if install_req.user_supplied:
existing_req.user_supplied = True
existing_req.extras = tuple(
sorted(set(existing_req.extras) | set(install_req.extras)))
logger.debug(
"Setting %s extras to: %s",
existing_req,
existing_req.extras,
)
# Return the existing requirement for addition to the parent and
# scanning again.
return [existing_req], existing_req
def install_unpacked_wheel(
name, # type: str
wheeldir, # type: str
wheel_zip, # type: ZipFile
scheme, # type: Scheme
req_description, # type: str
pycompile=True, # type: bool
warn_script_location=True, # type: bool
direct_url=None, # type: Optional[DirectUrl]
):
# type: (...) -> None
"""Install a wheel.
:param name: Name of the project to install
:param wheeldir: Base directory of the unpacked wheel
:param wheel_zip: open ZipFile for wheel being installed
:param scheme: Distutils scheme dictating the install directories
:param req_description: String used in place of the requirement, for
logging
:param pycompile: Whether to byte-compile installed Python files
:param warn_script_location: Whether to check that scripts are installed
into a directory on PATH
:raises UnsupportedWheel:
* when the directory holds an unpacked wheel with incompatible
Wheel-Version
* when the .dist-info dir does not match the wheel
"""
# TODO: Investigate and break this up.
# TODO: Look into moving this into a dedicated class for representing an
# installation.
source = wheeldir.rstrip(os.path.sep) + os.path.sep
info_dir, metadata = parse_wheel(wheel_zip, name)
if wheel_root_is_purelib(metadata):
lib_dir = scheme.purelib
else:
lib_dir = scheme.platlib
subdirs = os.listdir(source)
data_dirs = [s for s in subdirs if s.endswith(".data")]
# Record details of the files moved
# installed = files copied from the wheel to the destination
# changed = files changed while installing (scripts #! line typically)
# generated = files newly generated during the install (script wrappers)
installed = {} # type: Dict[str, str]
changed = set()
generated = [] # type: List[str]
# Compile all of the pyc files that we're going to be installing
if pycompile:
with captured_stdout() as stdout:
with warnings.catch_warnings():
warnings.filterwarnings("ignore")
compileall.compile_dir(source, force=True, quiet=True)
logger.debug(stdout.getvalue())
def record_installed(srcfile, destfile, modified=False):
# type: (str, str, bool) -> None
"""Map archive RECORD paths to installation RECORD paths."""
oldpath = normpath(srcfile, wheeldir)
newpath = normpath(destfile, lib_dir)
installed[oldpath] = newpath
if modified:
changed.add(destfile)
def clobber(
source, # type: str
dest, # type: str
is_base, # type: bool
fixer=None, # type: Optional[Callable[[str], Any]]
filter=None, # type: Optional[Callable[[str], bool]]
):
# type: (...) -> None
ensure_dir(dest) # common for the 'include' path
for dir, subdirs, files in os.walk(source):
basedir = dir[len(source):].lstrip(os.path.sep)
destdir = os.path.join(dest, basedir)
if is_base and basedir == "":
subdirs[:] = [s for s in subdirs if not s.endswith(".data")]
for f in files:
# Skip unwanted files
if filter and filter(f):
continue
srcfile = os.path.join(dir, f)
destfile = os.path.join(dest, basedir, f)
# directory creation is lazy and after the file filtering above
# to ensure we don't install empty dirs; empty dirs can't be
# uninstalled.
ensure_dir(destdir)
# copyfile (called below) truncates the destination if it
# exists and then writes the new contents. This is fine in most
# cases, but can cause a segfault if pip has loaded a shared
# object (e.g. from pyopenssl through its vendored urllib3)
# Since the shared object is mmap'd an attempt to call a
# symbol in it will then cause a segfault. Unlinking the file
# allows writing of new contents while allowing the process to
# continue to use the old copy.
if os.path.exists(destfile):
os.unlink(destfile)
# We use copyfile (not move, copy, or copy2) to be extra sure
# that we are not moving directories over (copyfile fails for
# directories) as well as to ensure that we are not copying
# over any metadata because we want more control over what
# metadata we actually copy over.
shutil.copyfile(srcfile, destfile)
# Copy over the metadata for the file, currently this only
# includes the atime and mtime.
st = os.stat(srcfile)
if hasattr(os, "utime"):
os.utime(destfile, (st.st_atime, st.st_mtime))
# If our file is executable, then make our destination file
# executable.
if os.access(srcfile, os.X_OK):
st = os.stat(srcfile)
permissions = (st.st_mode | stat.S_IXUSR | stat.S_IXGRP
| stat.S_IXOTH)
os.chmod(destfile, permissions)
changed = False
if fixer:
changed = fixer(destfile)
record_installed(srcfile, destfile, changed)
clobber(source, lib_dir, True)
dest_info_dir = os.path.join(lib_dir, info_dir)
# Get the defined entry points
ep_file = os.path.join(dest_info_dir, "entry_points.txt")
console, gui = get_entrypoints(ep_file)
def is_entrypoint_wrapper(name):
# type: (str) -> bool
# EP, EP.exe and EP-script.py are scripts generated for
# entry point EP by setuptools
if name.lower().endswith(".exe"):
matchname = name[:-4]
elif name.lower().endswith("-script.py"):
matchname = name[:-10]
elif name.lower().endswith(".pya"):
matchname = name[:-4]
else:
matchname = name
# Ignore setuptools-generated scripts
return matchname in console or matchname in gui
for datadir in data_dirs:
fixer = None
filter = None
for subdir in os.listdir(os.path.join(wheeldir, datadir)):
fixer = None
if subdir == "scripts":
fixer = fix_script
filter = is_entrypoint_wrapper
source = os.path.join(wheeldir, datadir, subdir)
dest = getattr(scheme, subdir)
clobber(source, dest, False, fixer=fixer, filter=filter)
maker = PipScriptMaker(None, scheme.scripts)
# Ensure old scripts are overwritten.
# See https://github.com/pypa/pip/issues/1800
maker.clobber = True
# Ensure we don't generate any variants for scripts because this is almost
# never what somebody wants.
# See https://bitbucket.org/pypa/distlib/issue/35/
maker.variants = {""}
# This is required because otherwise distlib creates scripts that are not
# executable.
# See https://bitbucket.org/pypa/distlib/issue/32/
maker.set_mode = True
scripts_to_generate = []
# Special case pip and setuptools to generate versioned wrappers
#
# The issue is that some projects (specifically, pip and setuptools) use
# code in setup.py to create "versioned" entry points - pip2.7 on Python
# 2.7, pip3.3 on Python 3.3, etc. But these entry points are baked into
# the wheel metadata at build time, and so if the wheel is installed with
# a *different* version of Python the entry points will be wrong. The
# correct fix for this is to enhance the metadata to be able to describe
# such versioned entry points, but that won't happen till Metadata 2.0 is
# available.
# In the meantime, projects using versioned entry points will either have
# incorrect versioned entry points, or they will not be able to distribute
# "universal" wheels (i.e., they will need a wheel per Python version).
#
# Because setuptools and pip are bundled with _ensurepip and virtualenv,
# we need to use universal wheels. So, as a stopgap until Metadata 2.0, we
# override the versioned entry points in the wheel and generate the
# correct ones. This code is purely a short-term measure until Metadata 2.0
# is available.
#
# To add the level of hack in this section of code, in order to support
# ensurepip this code will look for an ``ENSUREPIP_OPTIONS`` environment
# variable which will control which version scripts get installed.
#
# ENSUREPIP_OPTIONS=altinstall
# - Only pipX.Y and easy_install-X.Y will be generated and installed
# ENSUREPIP_OPTIONS=install
# - pipX.Y, pipX, easy_install-X.Y will be generated and installed. Note
# that this option is technically if ENSUREPIP_OPTIONS is set and is
# not altinstall
# DEFAULT
# - The default behavior is to install pip, pipX, pipX.Y, easy_install
# and easy_install-X.Y.
pip_script = console.pop("pip", None)
if pip_script:
if "ENSUREPIP_OPTIONS" not in os.environ:
scripts_to_generate.append("pip = " + pip_script)
if os.environ.get("ENSUREPIP_OPTIONS", "") != "altinstall":
scripts_to_generate.append("pip{} = {}".format(
sys.version_info[0], pip_script))
scripts_to_generate.append("pip{} = {}".format(
get_major_minor_version(), pip_script))
# Delete any other versioned pip entry points
pip_ep = [k for k in console if re.match(r"pip(\d(\.\d)?)?$", k)]
for k in pip_ep:
del console[k]
easy_install_script = console.pop("easy_install", None)
if easy_install_script:
if "ENSUREPIP_OPTIONS" not in os.environ:
scripts_to_generate.append("easy_install = " + easy_install_script)
scripts_to_generate.append("easy_install-{} = {}".format(
get_major_minor_version(), easy_install_script))
# Delete any other versioned easy_install entry points
easy_install_ep = [
k for k in console if re.match(r"easy_install(-\d\.\d)?$", k)
]
for k in easy_install_ep:
del console[k]
# Generate the console and GUI entry points specified in the wheel
scripts_to_generate.extend(starmap("{} = {}".format, console.items()))
gui_scripts_to_generate = list(starmap("{} = {}".format, gui.items()))
generated_console_scripts = [] # type: List[str]
try:
generated_console_scripts = maker.make_multiple(scripts_to_generate)
generated.extend(generated_console_scripts)
generated.extend(
maker.make_multiple(gui_scripts_to_generate, {"gui": True}))
except MissingCallableSuffix as e:
entry = e.args[0]
raise InstallationError(
"Invalid script entry point: {} for req: {} - A callable "
"suffix is required. Cf https://packaging.python.org/"
"specifications/entry-points/#use-for-scripts for more "
"information.".format(entry, req_description))
if warn_script_location:
msg = message_about_scripts_not_on_PATH(generated_console_scripts)
if msg is not None:
logger.warning(msg)
generated_file_mode = 0o666 - current_umask()
@contextlib.contextmanager
def _generate_file(path, **kwargs):
# type: (str, **Any) -> Iterator[NamedTemporaryFileResult]
with adjacent_tmp_file(path, **kwargs) as f:
yield f
os.chmod(f.name, generated_file_mode)
replace(f.name, path)
# Record pip as the installer
installer_path = os.path.join(dest_info_dir, "INSTALLER")
with _generate_file(installer_path) as installer_file:
installer_file.write(b"pip\n")
generated.append(installer_path)
# Record the PEP 610 direct URL reference
if direct_url is not None:
direct_url_path = os.path.join(dest_info_dir, DIRECT_URL_METADATA_NAME)
with _generate_file(direct_url_path) as direct_url_file:
direct_url_file.write(direct_url.to_json().encode("utf-8"))
generated.append(direct_url_path)
# Record details of all files installed
record_path = os.path.join(dest_info_dir, "RECORD")
with open(record_path, **csv_io_kwargs("r")) as record_file:
rows = get_csv_rows_for_installed(
csv.reader(record_file),
installed=installed,
changed=changed,
generated=generated,
lib_dir=lib_dir,
)
with _generate_file(record_path, **csv_io_kwargs("w")) as record_file:
writer = csv.writer(record_file)
writer.writerows(sorted_outrows(rows)) # sort to simplify testing
def install_unpacked_wheel(
name, # type: str
wheeldir, # type: str
scheme, # type: Scheme
req_description, # type: str
pycompile=True, # type: bool
warn_script_location=True # type: bool
):
# type: (...) -> None
"""Install a wheel.
:param name: Name of the project to install
:param wheeldir: Base directory of the unpacked wheel
:param scheme: Distutils scheme dictating the install directories
:param req_description: String used in place of the requirement, for
logging
:param pycompile: Whether to byte-compile installed Python files
:param warn_script_location: Whether to check that scripts are installed
into a directory on PATH
"""
# TODO: Investigate and break this up.
# TODO: Look into moving this into a dedicated class for representing an
# installation.
if root_is_purelib(name, wheeldir):
lib_dir = scheme.purelib
else:
lib_dir = scheme.platlib
info_dir = [] # type: List[str]
data_dirs = []
source = wheeldir.rstrip(os.path.sep) + os.path.sep
# Record details of the files moved
# installed = files copied from the wheel to the destination
# changed = files changed while installing (scripts #! line typically)
# generated = files newly generated during the install (script wrappers)
installed = {} # type: Dict[str, str]
changed = set()
generated = [] # type: List[str]
# Compile all of the pyc files that we're going to be installing
if pycompile:
with captured_stdout() as stdout:
with warnings.catch_warnings():
warnings.filterwarnings('ignore')
compileall.compile_dir(source, force=True, quiet=True)
logger.debug(stdout.getvalue())
def record_installed(srcfile, destfile, modified=False):
# type: (str, str, bool) -> None
"""Map archive RECORD paths to installation RECORD paths."""
oldpath = normpath(srcfile, wheeldir)
newpath = normpath(destfile, lib_dir)
installed[oldpath] = newpath
if modified:
changed.add(destfile)
def clobber(
source, # type: str
dest, # type: str
is_base, # type: bool
fixer=None, # type: Optional[Callable[[str], Any]]
filter=None # type: Optional[Callable[[str], bool]]
):
# type: (...) -> None
ensure_dir(dest) # common for the 'include' path
for dir, subdirs, files in os.walk(source):
basedir = dir[len(source):].lstrip(os.path.sep)
destdir = os.path.join(dest, basedir)
if is_base and basedir.split(os.path.sep, 1)[0].endswith('.data'):
continue
for s in subdirs:
destsubdir = os.path.join(dest, basedir, s)
if is_base and basedir == '' and destsubdir.endswith('.data'):
data_dirs.append(s)
continue
elif (
is_base and
s.endswith('.dist-info') and
canonicalize_name(s).startswith(canonicalize_name(name))
):
assert not info_dir, (
'Multiple .dist-info directories: {}, '.format(
destsubdir
) + ', '.join(info_dir)
)
info_dir.append(destsubdir)
for f in files:
# Skip unwanted files
if filter and filter(f):
continue
srcfile = os.path.join(dir, f)
destfile = os.path.join(dest, basedir, f)
# directory creation is lazy and after the file filtering above
# to ensure we don't install empty dirs; empty dirs can't be
# uninstalled.
ensure_dir(destdir)
# copyfile (called below) truncates the destination if it
# exists and then writes the new contents. This is fine in most
# cases, but can cause a segfault if pip has loaded a shared
# object (e.g. from pyopenssl through its vendored urllib3)
# Since the shared object is mmap'd an attempt to call a
# symbol in it will then cause a segfault. Unlinking the file
# allows writing of new contents while allowing the process to
# continue to use the old copy.
if os.path.exists(destfile):
os.unlink(destfile)
# We use copyfile (not move, copy, or copy2) to be extra sure
# that we are not moving directories over (copyfile fails for
# directories) as well as to ensure that we are not copying
# over any metadata because we want more control over what
# metadata we actually copy over.
shutil.copyfile(srcfile, destfile)
# Copy over the metadata for the file, currently this only
# includes the atime and mtime.
st = os.stat(srcfile)
if hasattr(os, "utime"):
os.utime(destfile, (st.st_atime, st.st_mtime))
# If our file is executable, then make our destination file
# executable.
if os.access(srcfile, os.X_OK):
st = os.stat(srcfile)
permissions = (
st.st_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
)
os.chmod(destfile, permissions)
changed = False
if fixer:
changed = fixer(destfile)
record_installed(srcfile, destfile, changed)
clobber(source, lib_dir, True)
assert info_dir, "{} .dist-info directory not found".format(
req_description
)
# Get the defined entry points
ep_file = os.path.join(info_dir[0], 'entry_points.txt')
console, gui = get_entrypoints(ep_file)
def is_entrypoint_wrapper(name):
# type: (str) -> bool
# EP, EP.exe and EP-script.py are scripts generated for
# entry point EP by setuptools
if name.lower().endswith('.exe'):
matchname = name[:-4]
elif name.lower().endswith('-script.py'):
matchname = name[:-10]
elif name.lower().endswith(".pya"):
matchname = name[:-4]
else:
matchname = name
# Ignore setuptools-generated scripts
return (matchname in console or matchname in gui)
for datadir in data_dirs:
fixer = None
filter = None
for subdir in os.listdir(os.path.join(wheeldir, datadir)):
fixer = None
if subdir == 'scripts':
fixer = fix_script
filter = is_entrypoint_wrapper
source = os.path.join(wheeldir, datadir, subdir)
dest = getattr(scheme, subdir)
clobber(source, dest, False, fixer=fixer, filter=filter)
maker = PipScriptMaker(None, scheme.scripts)
# Ensure old scripts are overwritten.
# See https://github.com/pypa/pip/issues/1800
maker.clobber = True
# Ensure we don't generate any variants for scripts because this is almost
# never what somebody wants.
# See https://bitbucket.org/pypa/distlib/issue/35/
maker.variants = {''}
# This is required because otherwise distlib creates scripts that are not
# executable.
# See https://bitbucket.org/pypa/distlib/issue/32/
maker.set_mode = True
scripts_to_generate = []
# Special case pip and setuptools to generate versioned wrappers
#
# The issue is that some projects (specifically, pip and setuptools) use
# code in setup.py to create "versioned" entry points - pip2.7 on Python
# 2.7, pip3.3 on Python 3.3, etc. But these entry points are baked into
# the wheel metadata at build time, and so if the wheel is installed with
# a *different* version of Python the entry points will be wrong. The
# correct fix for this is to enhance the metadata to be able to describe
# such versioned entry points, but that won't happen till Metadata 2.0 is
# available.
# In the meantime, projects using versioned entry points will either have
# incorrect versioned entry points, or they will not be able to distribute
# "universal" wheels (i.e., they will need a wheel per Python version).
#
# Because setuptools and pip are bundled with _ensurepip and virtualenv,
# we need to use universal wheels. So, as a stopgap until Metadata 2.0, we
# override the versioned entry points in the wheel and generate the
# correct ones. This code is purely a short-term measure until Metadata 2.0
# is available.
#
# To add the level of hack in this section of code, in order to support
# ensurepip this code will look for an ``ENSUREPIP_OPTIONS`` environment
# variable which will control which version scripts get installed.
#
# ENSUREPIP_OPTIONS=altinstall
# - Only pipX.Y and easy_install-X.Y will be generated and installed
# ENSUREPIP_OPTIONS=install
# - pipX.Y, pipX, easy_install-X.Y will be generated and installed. Note
# that this option is technically if ENSUREPIP_OPTIONS is set and is
# not altinstall
# DEFAULT
# - The default behavior is to install pip, pipX, pipX.Y, easy_install
# and easy_install-X.Y.
pip_script = console.pop('pip', None)
if pip_script:
if "ENSUREPIP_OPTIONS" not in os.environ:
scripts_to_generate.append('pip = ' + pip_script)
if os.environ.get("ENSUREPIP_OPTIONS", "") != "altinstall":
scripts_to_generate.append(
'pip%s = %s' % (sys.version_info[0], pip_script)
)
scripts_to_generate.append(
'pip%s = %s' % (get_major_minor_version(), pip_script)
)
# Delete any other versioned pip entry points
pip_ep = [k for k in console if re.match(r'pip(\d(\.\d)?)?$', k)]
for k in pip_ep:
del console[k]
easy_install_script = console.pop('easy_install', None)
if easy_install_script:
if "ENSUREPIP_OPTIONS" not in os.environ:
scripts_to_generate.append(
'easy_install = ' + easy_install_script
)
scripts_to_generate.append(
'easy_install-%s = %s' % (
get_major_minor_version(), easy_install_script
)
)
# Delete any other versioned easy_install entry points
easy_install_ep = [
k for k in console if re.match(r'easy_install(-\d\.\d)?$', k)
]
for k in easy_install_ep:
del console[k]
# Generate the console and GUI entry points specified in the wheel
scripts_to_generate.extend(
'%s = %s' % kv for kv in console.items()
)
gui_scripts_to_generate = [
'%s = %s' % kv for kv in gui.items()
]
generated_console_scripts = [] # type: List[str]
try:
generated_console_scripts = maker.make_multiple(scripts_to_generate)
generated.extend(generated_console_scripts)
generated.extend(
maker.make_multiple(gui_scripts_to_generate, {'gui': True})
)
except MissingCallableSuffix as e:
entry = e.args[0]
raise InstallationError(
"Invalid script entry point: {} for req: {} - A callable "
"suffix is required. Cf https://packaging.python.org/en/"
"latest/distributing.html#console-scripts for more "
"information.".format(entry, req_description)
)
if warn_script_location:
msg = message_about_scripts_not_on_PATH(generated_console_scripts)
if msg is not None:
logger.warning(msg)
# Record pip as the installer
installer = os.path.join(info_dir[0], 'INSTALLER')
temp_installer = os.path.join(info_dir[0], 'INSTALLER.pip')
with open(temp_installer, 'wb') as installer_file:
installer_file.write(b'pip\n')
shutil.move(temp_installer, installer)
generated.append(installer)
# Record details of all files installed
record = os.path.join(info_dir[0], 'RECORD')
temp_record = os.path.join(info_dir[0], 'RECORD.pip')
with open_for_csv(record, 'r') as record_in:
with open_for_csv(temp_record, 'w+') as record_out:
reader = csv.reader(record_in)
outrows = get_csv_rows_for_installed(
reader, installed=installed, changed=changed,
generated=generated, lib_dir=lib_dir,
)
writer = csv.writer(record_out)
# Sort to simplify testing.
for row in sorted_outrows(outrows):
writer.writerow(row)
shutil.move(temp_record, record)
def prepare_linked_requirement(
self,
req, # type: InstallRequirement
):
# type: (...) -> AbstractDistribution
"""Prepare a requirement that would be obtained from req.link
"""
assert req.link
link = req.link
# TODO: Breakup into smaller functions
if link.scheme == 'file':
path = link.file_path
logger.info('Processing %s', display_path(path))
else:
logger.info('Collecting %s', req.req or req)
download_dir = self.download_dir
if link.is_wheel and self.wheel_download_dir:
# when doing 'pip wheel` we download wheels to a
# dedicated dir.
download_dir = self.wheel_download_dir
if link.is_wheel:
if download_dir:
# When downloading, we only unpack wheels to get
# metadata.
autodelete_unpacked = True
else:
# When installing a wheel, we use the unpacked
# wheel.
autodelete_unpacked = False
else:
# We always delete unpacked sdists after pip runs.
autodelete_unpacked = True
with indent_log():
# Since source_dir is only set for editable requirements.
assert req.source_dir is None
req.ensure_has_source_dir(self.build_dir, autodelete_unpacked)
# If a checkout exists, it's unwise to keep going. version
# inconsistencies are logged later, but do not fail the
# installation.
# FIXME: this won't upgrade when there's an existing
# package unpacked in `req.source_dir`
if os.path.exists(os.path.join(req.source_dir, 'setup.txt')):
raise PreviousBuildDirError(
"pip can't proceed with requirements '{}' due to a"
" pre-existing build directory ({}). This is "
"likely due to a previous installation that failed"
". pip is being responsible and not assuming it "
"can delete this. Please delete it and try again."
.format(req, req.source_dir)
)
# Now that we have the real link, we can tell what kind of
# requirements we have and raise some more informative errors
# than otherwise. (For example, we can raise VcsHashUnsupported
# for a VCS URL rather than HashMissing.)
if self.require_hashes:
# We could check these first 2 conditions inside
# unpack_url and save repetition of conditions, but then
# we would report less-useful error messages for
# unhashable requirements, complaining that there's no
# hash provided.
if link.is_vcs:
raise VcsHashUnsupported()
elif link.is_existing_dir():
raise DirectoryUrlHashUnsupported()
if not req.original_link and not req.is_pinned:
# Unpinned packages are asking for trouble when a new
# version is uploaded. This isn't a security check, but
# it saves users a surprising hash mismatch in the
# future.
#
# file:/// URLs aren't pinnable, so don't complain
# about them not being pinned.
raise HashUnpinned()
hashes = req.hashes(trust_internet=not self.require_hashes)
if self.require_hashes and not hashes:
# Known-good hashes are missing for this requirement, so
# shim it with a facade object that will provoke hash
# computation and then raise a HashMissing exception
# showing the user what the hash should be.
hashes = MissingHashes()
try:
local_file = unpack_url(
link, req.source_dir, self.downloader, download_dir,
hashes=hashes,
)
except requests.HTTPError as exc:
logger.critical(
'Could not install requirement %s because of error %s',
req,
exc,
)
raise InstallationError(
'Could not install requirement {} because of HTTP '
'error {} for URL {}'.format(req, exc, link)
)
# For use in later processing, preserve the file path on the
# requirement.
if local_file:
req.local_file_path = local_file.path
abstract_dist = _get_prepared_distribution(
req, self.req_tracker, self.finder, self.build_isolation,
)
if download_dir:
if link.is_existing_dir():
logger.info('Link is a directory, ignoring download_dir')
elif local_file:
download_location = os.path.join(
download_dir, link.filename
)
if not os.path.exists(download_location):
shutil.copy(local_file.path, download_location)
logger.info(
'Saved %s', display_path(download_location)
)
if self._download_should_save:
# Make a .zip of the source_dir we already created.
if link.is_vcs:
req.archive(self.download_dir)
return abstract_dist
def parse_req_from_line(name, line_source):
# type: (str, Optional[str]) -> RequirementParts
if is_url(name):
marker_sep = '; '
else:
marker_sep = ';'
if marker_sep in name:
name, markers_as_string = name.split(marker_sep, 1)
markers_as_string = markers_as_string.strip()
if not markers_as_string:
markers = None
else:
markers = Marker(markers_as_string)
else:
markers = None
name = name.strip()
req_as_string = None
path = os.path.normpath(os.path.abspath(name))
link = None
extras_as_string = None
if is_url(name):
link = Link(name)
else:
p, extras_as_string = _strip_extras(path)
url = _get_url_from_path(p, name)
if url is not None:
link = Link(url)
# it's a local file, dir, or url
if link:
# Handle relative file URLs
if link.scheme == 'file' and re.search(r'\.\./', link.url):
link = Link(
path_to_url(os.path.normpath(os.path.abspath(link.path))))
# wheel file
if link.is_wheel:
wheel = Wheel(link.filename) # can raise InvalidWheelFilename
req_as_string = "%s==%s" % (wheel.name, wheel.version)
else:
# set the req to the egg fragment. when it's not there, this
# will become an 'unnamed' requirement
req_as_string = link.egg_fragment
# a requirement specifier
else:
req_as_string = name
extras = convert_extras(extras_as_string)
def with_source(text):
# type: (str) -> str
if not line_source:
return text
return '{} (from {})'.format(text, line_source)
if req_as_string is not None:
try:
req = Requirement(req_as_string)
except InvalidRequirement:
if os.path.sep in req_as_string:
add_msg = "It looks like a path."
add_msg += deduce_helpful_msg(req_as_string)
elif ('=' in req_as_string and
not any(op in req_as_string for op in operators)):
add_msg = "= is not a valid operator. Did you mean == ?"
else:
add_msg = ''
msg = with_source(
'Invalid requirement: {!r}'.format(req_as_string)
)
if add_msg:
msg += '\nHint: {}'.format(add_msg)
raise InstallationError(msg)
else:
req = None
return RequirementParts(req, link, markers, extras)
def resolve(self, root_reqs, check_supported_wheels):
# type: (List[InstallRequirement], bool) -> RequirementSet
constraints = {} # type: Dict[str, Constraint]
user_requested = {} # type: Dict[str, int]
requirements = []
for i, req in enumerate(root_reqs):
if req.constraint:
# Ensure we only accept valid constraints
problem = check_invalid_constraint_type(req)
if problem:
raise InstallationError(problem)
if not req.match_markers():
continue
assert req.name, "Constraint must be named"
name = canonicalize_name(req.name)
if name in constraints:
constraints[name] &= req
else:
constraints[name] = Constraint.from_ireq(req)
else:
if req.user_supplied and req.name:
canonical_name = canonicalize_name(req.name)
if canonical_name not in user_requested:
user_requested[canonical_name] = i
r = self.factory.make_requirement_from_install_req(
req, requested_extras=()
)
if r is not None:
requirements.append(r)
provider = PipProvider(
factory=self.factory,
constraints=constraints,
ignore_dependencies=self.ignore_dependencies,
upgrade_strategy=self.upgrade_strategy,
user_requested=user_requested,
)
if "PIP_RESOLVER_DEBUG" in os.environ:
reporter = PipDebuggingReporter() # type: BaseReporter
else:
reporter = PipReporter()
resolver = RLResolver(provider, reporter)
try:
try_to_avoid_resolution_too_deep = 2000000
result = self._result = resolver.resolve(
requirements, max_rounds=try_to_avoid_resolution_too_deep
)
except ResolutionImpossible as e:
error = self.factory.get_installation_error(e, constraints)
raise error from e
req_set = RequirementSet(check_supported_wheels=check_supported_wheels)
for candidate in result.mapping.values():
ireq = candidate.get_install_requirement()
if ireq is None:
continue
# Check if there is already an installation under the same name,
# and set a flag for later stages to uninstall it, if needed.
installed_dist = self.factory.get_dist_to_uninstall(candidate)
if installed_dist is None:
# There is no existing installation -- nothing to uninstall.
ireq.should_reinstall = False
elif self.factory.force_reinstall:
# The --force-reinstall flag is set -- reinstall.
ireq.should_reinstall = True
elif parse_version(installed_dist.version) != candidate.version:
# The installation is different in version -- reinstall.
ireq.should_reinstall = True
elif candidate.is_editable or dist_is_editable(installed_dist):
# The incoming distribution is editable, or different in
# editable-ness to installation -- reinstall.
ireq.should_reinstall = True
elif candidate.source_link.is_file:
# The incoming distribution is under file://
if candidate.source_link.is_wheel:
# is a local wheel -- do nothing.
logger.info(
"%s is already installed with the same version as the "
"provided wheel. Use --force-reinstall to force an "
"installation of the wheel.",
ireq.name,
)
continue
looks_like_sdist = (
is_archive_file(candidate.source_link.file_path)
and candidate.source_link.ext != ".zip"
)
if looks_like_sdist:
# is a local sdist -- show a deprecation warning!
reason = (
"Source distribution is being reinstalled despite an "
"installed package having the same name and version as "
"the installed package."
)
replacement = "use --force-reinstall"
deprecated(
reason=reason,
replacement=replacement,
gone_in="21.1",
issue=8711,
)
# is a local sdist or path -- reinstall
ireq.should_reinstall = True
else:
continue
link = candidate.source_link
if link and link.is_yanked:
# The reason can contain non-ASCII characters, Unicode
# is required for Python 2.
msg = (
"The candidate selected for download or install is a "
"yanked version: {name!r} candidate (version {version} "
"at {link})\nReason for being yanked: {reason}"
).format(
name=candidate.name,
version=candidate.version,
link=link,
reason=link.yanked_reason or "<none given>",
)
logger.warning(msg)
req_set.add_named_requirement(ireq)
reqs = req_set.all_requirements
self.factory.preparer.prepare_linked_requirements_more(reqs)
return req_set
def call_subprocess(
cmd, # type: List[str]
show_stdout=False, # type: bool
cwd=None, # type: Optional[str]
on_returncode='raise', # type: str
extra_ok_returncodes=None, # type: Optional[Iterable[int]]
command_desc=None, # type: Optional[str]
extra_environ=None, # type: Optional[Mapping[str, Any]]
unset_environ=None, # type: Optional[Iterable[str]]
spinner=None # type: Optional[SpinnerInterface]
):
# type: (...) -> Text
"""
Args:
show_stdout: if true, use INFO to log the subprocess's stderr and
stdout streams. Otherwise, use DEBUG. Defaults to False.
extra_ok_returncodes: an iterable of integer return codes that are
acceptable, in addition to 0. Defaults to None, which means [].
unset_environ: an iterable of environment variable names to unset
prior to calling subprocess.Popen().
"""
if extra_ok_returncodes is None:
extra_ok_returncodes = []
if unset_environ is None:
unset_environ = []
# Most places in pip use show_stdout=False. What this means is--
#
# - We connect the child's output (combined stderr and stdout) to a
# single pipe, which we read.
# - We log this output to stderr at DEBUG level as it is received.
# - If DEBUG logging isn't enabled (e.g. if --verbose logging wasn't
# requested), then we show a spinner so the user can still see the
# subprocess is in progress.
# - If the subprocess exits with an error, we log the output to stderr
# at ERROR level if it hasn't already been displayed to the console
# (e.g. if --verbose logging wasn't enabled). This way we don't log
# the output to the console twice.
#
# If show_stdout=True, then the above is still done, but with DEBUG
# replaced by INFO.
if show_stdout:
# Then log the subprocess output at INFO level.
log_subprocess = subprocess_logger.info
used_level = std_logging.INFO
else:
# Then log the subprocess output using DEBUG. This also ensures
# it will be logged to the log file (aka user_log), if enabled.
log_subprocess = subprocess_logger.debug
used_level = std_logging.DEBUG
# Whether the subprocess will be visible in the console.
showing_subprocess = subprocess_logger.getEffectiveLevel() <= used_level
# Only use the spinner if we're not showing the subprocess output
# and we have a spinner.
use_spinner = not showing_subprocess and spinner is not None
if command_desc is None:
command_desc = format_command_args(cmd)
log_subprocess("Running command %s", command_desc)
env = os.environ.copy()
if extra_environ:
env.update(extra_environ)
for name in unset_environ:
env.pop(name, None)
try:
proc = subprocess.Popen(
cmd,
stderr=subprocess.STDOUT,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
cwd=cwd,
env=env,
)
proc.stdin.close()
except Exception as exc:
subprocess_logger.critical(
"Error %s while executing command %s",
exc,
command_desc,
)
raise
all_output = []
while True:
# The "line" value is a unicode string in Python 2.
line = console_to_str(proc.stdout.readline())
if not line:
break
line = line.rstrip()
all_output.append(line + '\n')
# Show the line immediately.
log_subprocess(line)
# Update the spinner.
if use_spinner:
spinner.spin()
try:
proc.wait()
finally:
if proc.stdout:
proc.stdout.close()
proc_had_error = (proc.returncode
and proc.returncode not in extra_ok_returncodes)
if use_spinner:
if proc_had_error:
spinner.finish("error")
else:
spinner.finish("done")
if proc_had_error:
if on_returncode == 'raise':
if not showing_subprocess:
# Then the subprocess streams haven't been logged to the
# console yet.
msg = make_subprocess_output_error(
cmd_args=cmd,
cwd=cwd,
lines=all_output,
exit_status=proc.returncode,
)
subprocess_logger.error(msg)
exc_msg = ('Command errored out with exit status {}: {} '
'Check the logs for full command output.').format(
proc.returncode, command_desc)
raise InstallationError(exc_msg)
elif on_returncode == 'warn':
subprocess_logger.warning(
'Command "%s" had error code %s in %s',
command_desc,
proc.returncode,
cwd,
)
elif on_returncode == 'ignore':
pass
else:
raise ValueError('Invalid value: on_returncode=%s' %
repr(on_returncode))
return ''.join(all_output)
return package_name, url_no_extras, None
for version_control in vcs:
<<<<<<< HEAD
if url.lower().startswith('%s:' % version_control):
url = '%s+%s' % (version_control, url)
=======
if url.lower().startswith('{}:'.format(version_control)):
url = '{}+{}'.format(version_control, url)
>>>>>>> development
break
if '+' not in url:
raise InstallationError(
'{} is not a valid editable requirement. '
'It should either be a path to a local project or a VCS URL '
'(beginning with svn+, git+, hg+, or bzr+).'.format(editable_req)
)
vc_type = url.split('+', 1)[0].lower()
if not vcs.get_backend(vc_type):
<<<<<<< HEAD
error_message = 'For --editable=%s only ' % editable_req + \
', '.join([backend.name + '+URL' for backend in vcs.backends]) + \
' is currently supported'
=======
backends = ", ".join([bends.name + '+URL' for bends in vcs.backends])
error_message = "For --editable={}, " \
"only {} are currently supported".format(
editable_req, backends)
