Retrieve project version via setuptools_scm

[wvreeven]

Checklist

• I added a descriptive title
• I searched open requests and couldn't find a duplicate

What is the idea?

As is the case with the load_setup_py_data, the function load_file_data should be able to retrieve the version of the project via setuptools_scm.

Why is this needed?

In pyproject.toml we rely on setuptools_scm to retrieve the version of the project. I have tried to use the new load_file_data function to load our project.toml file but Jinja doesn't retrieve the version via that file. We have followed the instructions here and here to set up project.toml but whatever I try, load_file_data returns the literal string as defined in pyproject.toml and doesn't call setuptools_scm to get the project version.

What should happen?

It should be possible to use the directive {% set data= load_file_data() %} to retrieve the dynamically determined project version via setuptools_scm.

Additional Context

No response

[dholth]

Some recipes use version: {{ GIT_DESCRIBE_TAG }}+{{ GIT_BUILD_STR }} in meta.yaml; does this work for your projects? This PR shows a regex-match version that the submitter wants to replace with GIT_DESCRIBE_TAG https://github.com/conda/conda-package-handling/pull/175/files#diff-0286c1d624d881984aef773a82433d955692c2fcbc773e7a6230fdb9602a23a3L1

[wvreeven]

Thanks for the suggestion. It turns out that those GIT variables give a different version than setuptools_scm. Using the GIT variables in one of my projects, I get v0.5.0+100_g32547c3 while setuptools_scm gives 0.5.1.dev100+g32547c3.d20230216. It is the latter version that we use with all our projects.

[tomrutter]

Would it work to allow conda build to pick up version information from the wheel or installed package after the build.sh scripts have run pip install?

[wvreeven]

We don't use build.sh scripts nor do we run pip install. Having said that, why would that be a solution for this? Doesn't the current conda code that gets the version from setup.py do this before the wheel is created or the package installed? Our pyproject.toml creates a version.py file containing the version and this needs to be part of the conda package.

[wvreeven]

Is there any update for this request?