test_isolated_env_install_discards_requirements_not_needed_by_env fails with python 3.14.0a6

[hrnciar]

Description

I tried to debug the failing test and I've noticed a different behaviour with python 3.14.0a6 compared to python 3.13.2.

With 3.13.2, env.install installs poetry-core.

(Pdb) InstalledRepository.load(venv).packages
[Package('poetry-core', '2.0.1')]

This is empty with 3.14.0a6.

(Pdb) InstalledRepository.load(venv).packages
[]

=================================== FAILURES ===================================
______ test_isolated_env_install_discards_requirements_not_needed_by_env _______
[gw1] linux -- Python 3.14.0 /usr/bin/python3

pool = <poetry.repositories.repository_pool.RepositoryPool object at 0x7f12f49bd5b0>

    def test_isolated_env_install_discards_requirements_not_needed_by_env(
        pool: RepositoryPool,
    ) -> None:
        with ephemeral_environment(Path(sys.executable)) as venv:
            env = IsolatedEnv(venv, pool)
            assert not InstalledRepository.load(venv).find_packages(
                get_dependency("poetry-core")
            )
    
            venv_python_version = venv.get_marker_env().get("python_version")
            package_one = uuid.uuid4().hex
            package_two = uuid.uuid4().hex
    
            env.install(
                {
                    f"poetry-core; python_version=='{venv_python_version}'",
                    f"{package_one}>=1.0.0; python_version=='0.0'",
                    f"{package_two}>=2.0.0; platform_system=='Mirrors'",
                }
            )
>           assert InstalledRepository.load(venv).find_packages(
                get_dependency("poetry-core")
            )
E           assert []
E            +  where [] = find_packages(<Dependency poetry-core>)
E            +    where find_packages = <poetry.repositories.installed_repository.InstalledRepository object at 0x7f12f06571d0>.find_packages
E            +      where <poetry.repositories.installed_repository.InstalledRepository object at 0x7f12f06571d0> = load(VirtualEnv("/tmp/tmp1_ok99vc/.venv"))
E            +        where load = InstalledRepository.load
E            +    and   <Dependency poetry-core> = get_dependency('poetry-core')

/builddir/build/BUILD/poetry-2.1.1-build/poetry-2.1.1/tests/utils/test_isolated_build.py:80: AssertionError

Workarounds

N/A

Poetry Installation Method

system package manager (eg: dnf, apt etc.)

Operating System

Fedora 43

Poetry Version

2.1.1

Poetry Configuration

N/A

Python Sysconfig

No response

Example pyproject.toml

Poetry Runtime Logs

N/A

[hrnciar]

This is still happening also with python3.14-b1.

[radoering]

This should be fixed since we are testing with Python 3.14 now.

[github-actions[bot]]

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