def handle(self, project: Project, options: argparse.Namespace) -> None:
groups: list[str] = list(options.groups)
if options.pyproject:
options.hashes = False
groups = translate_groups(
project,
options.default,
options.dev,
options.groups or (),
)
requirements: dict[str, Requirement] = {}
packages: Iterable[Requirement] | Iterable[Candidate]
for group in groups:
requirements.update(project.get_dependencies(group))
if options.pyproject:
packages = requirements.values()
else:
project.core.ui.echo(
"The exported requirements file is no longer cross-platform. "
"Using it on other platforms may cause unexpected result.",
fg="yellow",
err=True,
)
candidates = resolve_candidates_from_lockfile(
project, requirements.values()
)
packages = candidates.values()
content = FORMATS[options.format].export(
project, packages, options
) # type: ignore
if options.output:
Path(options.output).write_text(content)
else:
project.core.ui.echo(content)
def test_resolve_candidates_to_install(project):
project.lockfile = {
"package": [
{
"name": "pytest",
"version": "4.6.0",
"summary": "pytest module",
"dependencies":
["py>=3.0", "configparser; sys_platform=='win32'"],
},
{
"name": "configparser",
"version": "1.2.0",
"summary": "configparser module",
"dependencies": ["backports"],
},
{
"name": "py",
"version": "3.6.0",
"summary": "py module",
},
{
"name": "backports",
"version": "2.2.0",
"summary": "backports module",
},
]
}
project.environment.marker_environment["sys_platform"] = "linux"
reqs = [parse_requirement("pytest")]
result = resolve_candidates_from_lockfile(project, reqs)
assert result["pytest"].version == "4.6.0"
assert result["py"].version == "3.6.0"
assert "configparser" not in result
assert "backports" not in result
project.environment.marker_environment["sys_platform"] = "win32"
result = resolve_candidates_from_lockfile(project, reqs)
assert result["pytest"].version == "4.6.0"
assert result["py"].version == "3.6.0"
assert result["configparser"].version == "1.2.0"
assert result["backports"].version == "2.2.0"