def _resolve(self, deps):
# Checking if we should active prereleases
prereleases = False
for dep in deps:
if dep.accepts_prereleases():
prereleases = True
break
constraints = [dep.as_requirement() for dep in deps]
command = get_pip_command()
opts, _ = command.parse_args([])
resolver = Resolver(
constraints, PyPIRepository(opts, command._build_session(opts)),
cache=DependencyCache(CACHE_DIR),
prereleases=prereleases
)
matches = resolver.resolve()
pinned = [m for m in matches if not m.editable and is_pinned_requirement(m)]
unpinned = [m for m in matches if m.editable or not is_pinned_requirement(m)]
reversed_dependencies = resolver.reverse_dependencies(matches)
# Complete reversed dependencies with cache
cache = resolver.dependency_cache.cache
for m in unpinned:
name = key_from_req(m.req)
if name not in cache:
continue
dependencies = cache[name][list(cache[name].keys())[0]]
for dep in dependencies:
dep = canonicalize_name(dep)
if dep not in reversed_dependencies:
reversed_dependencies[dep] = set()
reversed_dependencies[dep].add(canonicalize_name(name))
hashes = resolver.resolve_hashes(pinned)
packages = []
for m in matches:
name = key_from_req(m.req)
if name in self.UNSAFE:
continue
version = str(m.req.specifier)
if m in unpinned:
url, specifier = m.link.url.split('@')
rev, _ = specifier.split('#')
version = self._get_vcs_version(url, rev)
checksum = 'sha1:{}'.format(version['rev'])
else:
version = version.replace('==', '')
checksum = list(hashes[m])
# Figuring out category and optionality
category = None
optional = False
# Checking if it's a main dependency
for dep in deps:
if dep.name == name:
category = dep.category
optional = dep.optional
break
if not category:
def _category(child):
opt = False
cat = None
parents = reversed_dependencies.get(child, set())
for parent in parents:
for dep in deps:
if dep.name != parent:
continue
opt = dep.optional
if dep.category == 'main':
# Dependency is given by at least one main package
# We flag it as main
return 'main', opt
return 'dev', opt
cat, op = _category(parent)
if cat is not None:
return cat, opt
return cat, opt
category, optional = _category(name)
# If category is still None at this point
# The dependency must have come from a VCS
# dependency. To avoid missing packages
# we assume "main" category and not optional
if category is None:
category = 'main'
optional = False
if not isinstance(checksum, list):
checksum = [checksum]
# Retrieving Python restriction if any
python = self._get_pythons_for_package(
name, reversed_dependencies, deps
)
python = list(python)
if '*' in python:
# If at least one parent gave a wildcard
# Then it should be installed for any Python version
python = ['*']
package = {
'name': name,
'version': version,
'checksum': checksum,
'category': category,
'optional': optional,
'python': python
}
packages.append(package)
return sorted(packages, key=lambda p: p['name'].lower())
def test_is_pinned_requirement_editable(from_editable):
ireq = from_editable("git+git://fake.org/x/y.git#egg=y")
assert not is_pinned_requirement(ireq)
def test_is_pinned_requirement_editable(from_editable):
ireq = from_editable("git+git://fake.org/x/y.git#egg=y")
assert not is_pinned_requirement(ireq)
def test_is_pinned_requirement(from_line, line, expected):
ireq = from_line(line)
assert is_pinned_requirement(ireq) is expected
def test_is_pinned_requirement(from_line, line, expected):
ireq = from_line(line)
assert is_pinned_requirement(ireq) is expected
