在诗歌中使用相对路径进行 pip 安装

Question

如何指定 pip 可以在 poetry 的 pyproject.toml 中使用的相对路径？

poetry 成功安装它们，但是 pip 失败并出现以下错误:

File "/tmp/pip-build-env-ck09aiax/overlay/lib/python3.7/site-packages/poetry/core/packages/directory_dependency.py", line 36, in __init__
        raise ValueError("Directory {} does not exist".format(self._path))
    ValueError: Directory ../lib_foo does not exist

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示例

我有以下存储库结构

.
├── lib_foo
│   ├── lib_foo
│   │   └── __init__.py
│   └── pyproject.toml
└── main_app
    ├── main_app
    │   └── __init__.py
    └── pyproject.toml

main_app 依赖于 lib_foo，它的依赖如下:
./main_app/pyproject.toml

[tool.poetry.dependencies]
python = "^3.7"
lib-foo = { path = "../lib_foo" }  # also tried  path = "../lib_foo/"

做的时候:

./main_app$ poetry install  # runs successfully 
./main_app$ python -m pip install ../lib_foo/  # runs successfully
./main_app$ python -m pip install .  # fails with the error mentioned above 
./main_app$ python -m pip --version
pip 20.1.1 from ./main_app/my_venv/lib/python3.7/site-packages/pip (python 3.7)

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我在开发项目时使用 poetry 但是在部署它们时我只想使用 pip

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一个相关issue

Answer 1

我很确定 pip 无法处理相对路径的依赖关系。绝对路径可能没问题。

在我看来，pip 在 core metadata format 中获取依赖项，因此对于依赖项，格式为 PEP 508 ，它说:

the URL reference form, specified in PEP-440 [4] is not actually implemented in pip, but since PEP-440 is accepted, we use that format rather than pip's current native format.

和PEP 440说(强调我的):

File URLs take the form of file://<host>/<path>. If the <host> is omitted it is assumed to be localhost and even if the <host> is omitted the third slash MUST still exist.

我天真地将其解释为所有路径都必须是绝对路径。

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相关:

• https://github.com/pypa/pip/issues/9127
• https://github.com/python-poetry/poetry/issues/3148