def complete_package(
self, package): # type: (DependencyPackage) -> DependencyPackage
if package.is_root():
package = package.clone()
if not package.is_root() and package.source_type not in {
"directory",
"file",
"url",
"git",
}:
package = DependencyPackage(
package.dependency,
self._pool.package(
package.name,
package.version.text,
extras=package.requires_extras,
repository=package.dependency.source_name,
),
)
dependencies = [
r for r in package.requires
if self._package.python_constraint.allows_any(r.python_constraint)
]
# Searching for duplicate dependencies
#
# If the duplicate dependencies have the same constraint,
# the requirements will be merged.
#
# For instance:
# - enum34; python_version=="2.7"
# - enum34; python_version=="3.3"
#
# will become:
# - enum34; python_version=="2.7" or python_version=="3.3"
#
# If the duplicate dependencies have different constraints
# we have to split the dependency graph.
#
# An example of this is:
# - pypiwin32 (220); sys_platform == "win32" and python_version >= "3.6"
# - pypiwin32 (219); sys_platform == "win32" and python_version < "3.6"
duplicates = OrderedDict()
for dep in dependencies:
if dep.name not in duplicates:
duplicates[dep.name] = []
duplicates[dep.name].append(dep)
dependencies = []
for dep_name, deps in duplicates.items():
if len(deps) == 1:
dependencies.append(deps[0])
continue
self.debug("<debug>Duplicate dependencies for {}</debug>".format(
dep_name))
# Regrouping by constraint
by_constraint = OrderedDict()
for dep in deps:
if dep.constraint not in by_constraint:
by_constraint[dep.constraint] = []
by_constraint[dep.constraint].append(dep)
# We merge by constraint
for constraint, _deps in by_constraint.items():
new_markers = []
for dep in _deps:
marker = dep.marker.without_extras()
if marker.is_empty():
# No marker or only extras
continue
new_markers.append(marker)
if not new_markers:
continue
dep = _deps[0]
dep.marker = dep.marker.union(MarkerUnion(*new_markers))
by_constraint[constraint] = [dep]
continue
if len(by_constraint) == 1:
self.debug("<debug>Merging requirements for {}</debug>".format(
str(deps[0])))
dependencies.append(list(by_constraint.values())[0][0])
continue
# We leave dependencies as-is if they have the same
# python/platform constraints.
# That way the resolver will pickup the conflict
# and display a proper error.
_deps = [value[0] for value in by_constraint.values()]
seen = set()
for _dep in _deps:
pep_508_dep = _dep.to_pep_508(False)
if ";" not in pep_508_dep:
_requirements = ""
else:
_requirements = pep_508_dep.split(";")[1].strip()
if _requirements not in seen:
seen.add(_requirements)
if len(_deps) != len(seen):
for _dep in _deps:
dependencies.append(_dep)
continue
# At this point, we raise an exception that will
# tell the solver to enter compatibility mode
# which means it will resolve for subsets
# Python constraints
#
# For instance, if our root package requires Python ~2.7 || ^3.6
# And we have one dependency that requires Python <3.6
# and the other Python >=3.6 than the solver will solve
# dependencies for Python >=2.7,<2.8 || >=3.4,<3.6
# and Python >=3.6,<4.0
python_constraints = []
for constraint, _deps in by_constraint.items():
python_constraints.append(_deps[0].python_versions)
_deps = [str(_dep[0]) for _dep in by_constraint.values()]
self.debug(
"<warning>Different requirements found for {}.</warning>".
format(", ".join(_deps[:-1]) + " and " + _deps[-1]))
raise CompatibilityError(*python_constraints)
# Modifying dependencies as needed
for dep in dependencies:
if not package.dependency.python_constraint.is_any():
dep.transitive_python_versions = str(
dep.python_constraint.intersect(
package.dependency.python_constraint))
if (package.dependency.is_directory()
or package.dependency.is_file()) and (dep.is_directory()
or dep.is_file()):
if dep.path.as_posix().startswith(package.source_url):
relative = (Path(package.source_url) /
dep.path).relative_to(package.source_url)
else:
relative = Path(package.source_url) / dep.path
# TODO: Improve the way we set the correct relative path for dependencies
dep._path = relative
package.requires = dependencies
return package
def complete_package(
self, package): # type: (DependencyPackage) -> DependencyPackage
if package.is_root():
package = package.clone()
requires = package.all_requires
elif not package.is_root() and package.source_type not in {
"directory",
"file",
"url",
"git",
}:
package = DependencyPackage(
package.dependency,
self._pool.package(
package.name,
package.version.text,
extras=package.dependency.extras,
repository=package.dependency.source_name,
),
)
requires = package.requires
else:
requires = package.requires
if self._load_deferred:
# Retrieving constraints for deferred dependencies
for r in requires:
if r.is_directory():
self.search_for_directory(r)
elif r.is_file():
self.search_for_file(r)
elif r.is_vcs():
self.search_for_vcs(r)
elif r.is_url():
self.search_for_url(r)
optional_dependencies = []
activated_extras = []
for extra in package.dependency.extras:
if extra not in package.extras:
continue
activated_extras.append(extra)
optional_dependencies += [d.name for d in package.extras[extra]]
_dependencies = []
# If some extras/features were required, we need to
# add a special dependency representing the base package
# to the current package
if package.dependency.extras:
if activated_extras:
package = package.with_features(activated_extras)
_dependencies.append(package.without_features().to_dependency())
for dep in requires:
if not self._python_constraint.allows_any(dep.python_constraint):
continue
if dep.name in self.UNSAFE_PACKAGES:
continue
if self._env and not dep.marker.validate(self._env.marker_env):
continue
if (dep.is_optional() and dep.name not in optional_dependencies
and not package.is_root()):
continue
_dependencies.append(dep)
overrides = self._overrides.get(package, {})
dependencies = []
overridden = []
for dep in _dependencies:
if dep.name in overrides:
if dep.name in overridden:
continue
dependencies.append(overrides[dep.name])
overridden.append(dep.name)
continue
dependencies.append(dep)
# Searching for duplicate dependencies
#
# If the duplicate dependencies have the same constraint,
# the requirements will be merged.
#
# For instance:
# - enum34; python_version=="2.7"
# - enum34; python_version=="3.3"
#
# will become:
# - enum34; python_version=="2.7" or python_version=="3.3"
#
# If the duplicate dependencies have different constraints
# we have to split the dependency graph.
#
# An example of this is:
# - pypiwin32 (220); sys_platform == "win32" and python_version >= "3.6"
# - pypiwin32 (219); sys_platform == "win32" and python_version < "3.6"
duplicates = OrderedDict()
for dep in dependencies:
if dep.name not in duplicates:
duplicates[dep.name] = []
duplicates[dep.name].append(dep)
dependencies = []
for dep_name, deps in duplicates.items():
if len(deps) == 1:
dependencies.append(deps[0])
continue
self.debug("<debug>Duplicate dependencies for {}</debug>".format(
dep_name))
# Regrouping by constraint
by_constraint = OrderedDict()
for dep in deps:
if dep.constraint not in by_constraint:
by_constraint[dep.constraint] = []
by_constraint[dep.constraint].append(dep)
# We merge by constraint
for constraint, _deps in by_constraint.items():
new_markers = []
for dep in _deps:
marker = dep.marker.without_extras()
if marker.is_any():
# No marker or only extras
continue
new_markers.append(marker)
if not new_markers:
continue
dep = _deps[0]
dep.marker = dep.marker.union(MarkerUnion(*new_markers))
by_constraint[constraint] = [dep]
continue
if len(by_constraint) == 1:
self.debug("<debug>Merging requirements for {}</debug>".format(
str(deps[0])))
dependencies.append(list(by_constraint.values())[0][0])
continue
# We leave dependencies as-is if they have the same
# python/platform constraints.
# That way the resolver will pickup the conflict
# and display a proper error.
_deps = [value[0] for value in by_constraint.values()]
seen = set()
for _dep in _deps:
pep_508_dep = _dep.to_pep_508(False)
if ";" not in pep_508_dep:
_requirements = ""
else:
_requirements = pep_508_dep.split(";")[1].strip()
if _requirements not in seen:
seen.add(_requirements)
if len(_deps) != len(seen):
for _dep in _deps:
dependencies.append(_dep)
continue
# At this point, we raise an exception that will
# tell the solver to make new resolutions with specific overrides.
#
# For instance, if the foo (1.2.3) package has the following dependencies:
# - bar (>=2.0) ; python_version >= "3.6"
# - bar (<2.0) ; python_version < "3.6"
#
# then the solver will need to make two new resolutions
# with the following overrides:
# - {<Package foo (1.2.3): {"bar": <Dependency bar (>=2.0)>}
# - {<Package foo (1.2.3): {"bar": <Dependency bar (<2.0)>}
markers = []
for constraint, _deps in by_constraint.items():
markers.append(_deps[0].marker)
_deps = [_dep[0] for _dep in by_constraint.values()]
self.debug(
"<warning>Different requirements found for {}.</warning>".
format(", ".join(
"<c1>{}</c1> <fg=default>(<c2>{}</c2>)</> with markers <b>{}</b>"
.format(
d.name,
d.pretty_constraint,
d.marker if not d.marker.is_any() else "*",
) for d in _deps[:-1]) + " and " +
"<c1>{}</c1> <fg=default>(<c2>{}</c2>)</> with markers <b>{}</b>"
.format(
_deps[-1].name,
_deps[-1].pretty_constraint,
_deps[-1].
marker if not _deps[-1].marker.is_any() else "*",
)))
# We need to check if one of the duplicate dependencies
# has no markers. If there is one, we need to change its
# environment markers to the inverse of the union of the
# other dependencies markers.
# For instance, if we have the following dependencies:
# - ipython
# - ipython (1.2.4) ; implementation_name == "pypy"
#
# the marker for `ipython` will become `implementation_name != "pypy"`.
any_markers_dependencies = [d for d in _deps if d.marker.is_any()]
other_markers_dependencies = [
d for d in _deps if not d.marker.is_any()
]
if any_markers_dependencies:
marker = other_markers_dependencies[0].marker
for other_dep in other_markers_dependencies[1:]:
marker = marker.union(other_dep.marker)
for i, d in enumerate(_deps):
if d.marker.is_any():
_deps[i].marker = marker.invert()
overrides = []
for _dep in _deps:
current_overrides = self._overrides.copy()
package_overrides = current_overrides.get(package, {}).copy()
package_overrides.update({_dep.name: _dep})
current_overrides.update({package: package_overrides})
overrides.append(current_overrides)
raise OverrideNeeded(*overrides)
# Modifying dependencies as needed
clean_dependencies = []
for dep in dependencies:
if not package.dependency.transitive_marker.without_extras(
).is_any():
marker_intersection = package.dependency.transitive_marker.without_extras(
).intersect(dep.marker.without_extras())
if marker_intersection.is_empty():
# The dependency is not needed, since the markers specified
# for the current package selection are not compatible with
# the markers for the current dependency, so we skip it
continue
dep.transitive_marker = marker_intersection
if not package.dependency.python_constraint.is_any():
python_constraint_intersection = dep.python_constraint.intersect(
package.dependency.python_constraint)
if python_constraint_intersection.is_empty():
# This dependency is not needed under current python constraint.
continue
dep.transitive_python_versions = str(
python_constraint_intersection)
clean_dependencies.append(dep)
package.requires = clean_dependencies
return package
