def test_marker_str_conversion_skips_empty_and_any():
union = MarkerUnion(
parse_marker("<empty>"),
parse_marker(
'sys_platform == "darwin" or python_version <= "3.6" or os_name == "Windows"'
),
parse_marker(""),
)
assert str(union) == (
'sys_platform == "darwin" or python_version <= "3.6" or os_name == "Windows"'
)
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 test_marker_union_not_all_empty():
union = MarkerUnion(parse_marker("<empty>"), parse_marker("<empty>"),
parse_marker(""))
assert not union.is_empty()
def test_marker_union_all_any():
union = MarkerUnion(parse_marker(""), parse_marker(""))
assert union.is_any()
