Deps are not installed about action-mypy HOT 5 CLOSED

Hi @latot ,

Thanks for using it.
And thanks for the report on the minimum configuration.

I will explain below

Auxiliary information

1. for action-mypy, automatic mypy installation uses setup_command setting.
2. The default value of the setup_command for action-mypy is pip install mypy.
3. mypy should be put in "dev dependencies" instead of normal "dependencies" (e.g. dev in [project.optional-dependencies]).
4. it is not easy to install with pip using the pyproject.toml configuration (e.g. pip install . [dev], which involves installing packages).

The above is not directly relevant in this case, as you are manually installing dependencies.

1. mypy requires a type stub to examine dependent packages.
2. action-mypy will install stubs by mypy (value of install_types config).
   There are some problems with pandas in this regard.

see python/mypy#14328

I think the only way to get pandas stub is to manually install pandas-stubs or set ignore_missing_imports to ignore it.

and see pypa/pip#11584

pip do not support pip install -r pyprojectr.toml, you need pip install . like command.

I will close this issue, but if I am mistaken or have other information, please contact me again and reopen.

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Hi, I think for this case, the best maybe would be run pip install ., add it to the script by default (? it would allow to run the command properly.

In the case of install_types would be good some examples, I'm trying to look on it, but can't found the right way to use/configure it.

from action-mypy.

install_types is an auxiliary function that installs several type packages that mypy (through a pre-run cache) knows and considers safe.

Pandas cannot rely on this.

Before this action, you can use a shell script or some other step to pip install . in a shell script or other step to install the type packages (pandas-stubs).

from action-mypy.

wouldn't it be better, add pip install . to the published script? that would do to properly works on this env too.

from action-mypy.

There is also that idea.

However, in the course of development up to now, we have come to the conclusion that each action should move only as much as is necessary and leave the "construction of the state expected by the project" to those who create the workflow.

Some people put it in separately from the lock file, some use a special file name as requirements-foo.txt, some use Poetry, some use rye, etc.

"pip install mypy" is an aspect of remaining historical

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