How to specify --python-tag with Hatch?

[facelessuser]

I assume this is something the build backend would support. I have a project that builds Unicode tables that match the Python version it is being installed on. So, when releasing, I build a python package for each supported Python version. They are all pure Python wheels, but each one contains a set of Unicode tables that matches the given Python distribution.

With setup tools, all I did was:

$ python3 setup.py bdist_wheel --python-tag py39

Using build, it is a little more awkward, but doable:

$ python3 -m build -w -C="--global-option=--python-tag" -C="--global-option=py310"

It seems that if you try this with a project that uses a Hatch backend, this doesn't work. I imagine this is because the backend would need to support such input. Does Hatch support this already, and I just haven't found where yet? If not, is it something that could be added?

[ofek]

https://ofek.dev/hatch/dev/plugins/builder/#build-data

[facelessuser]

Man, I was searching everywhere to try and find that 🙂.

So you just use a hook to populate it in metadata['tag']? This is a little unclear to me.

[ofek]

Examples:

• https://github.com/ofek/hatch/blob/7d1698c81f644e1c9aa257c262f8304da58c0f3f/tests/backend/builders/test_wheel.py#L622
• https://github.com/ofek/hatch-mypyc/blob/6009aee845e7daa76bcebdde60d9a59811e87c43/hatch_mypyc/plugin.py#L307-L310

[facelessuser]

Got it, I'll try this out later today.

[facelessuser]

Worked great!