how to use custom Python distribution properly

[schussda]

I read
https://hatch.pypa.io/latest/how-to/python/custom/
https://hatch.pypa.io/latest/tutorials/python/manage/

but its not quite clear for me how to use this i tried this in hatch.toml:

[envs.default.env-vars]
HATCH_PYTHON_CUSTOM_SOURCE_PYIR3_12 = "https://github.com/indygreg/python-build-standalone/releases/download/20241206/cpython-3.12.8+20241206-x86_64-pc-windows-msvc-pgo-full.tar.zst"
HATCH_PYTHON_CUSTOM_PATH_PYIR3_12 = "cpython-3.12.8+20241206-i686-pc-windows-msvc-pgo-full.tar/python/install/python.exe"
HATCH_PYTHON_CUSTOM_VERSION_PYIR3_12 = "3.12.8"

Afterwards i was expecting to be able to install it via
hatch python install pyir3.12
but its not available

[benblank]

I'm having a similar problem trying to test against PyPy 3.11.

Based on the virtual environment docs, I expected that setting HATCH_PYTHON_SOURCE_PYPY3_11 would work. Based on the custom Python distribution docs, I had also hoped that setting HATCH_PYTHON_CUSTOM_SOURCE_PYPY3_11, HATCH_PYTHON_CUSTOM_PATH_PYPY3_11, and HATCH_PYTHON_CUSTOM_VERSION_PYPY3_11 might work (I based the values of the latter two on PyPyOfficialDistribution). However, I wasn't able to find any combination of those which allowed Hatch to "locate pypy3.11".

Hatch output:

~/Documents/Projects/hatch-custom-python $ env \
  HATCH_PYTHON_SOURCE_PYPY3_11=https://downloads.python.org/pypy/pypy3.11-v7.3.19-linux64.tar.bz2 \
  HATCH_PYTHON_CUSTOM_SOURCE_PYPY3_11=https://downloads.python.org/pypy/pypy3.11-v7.3.19-linux64.tar.bz2 \
  HATCH_PYTHON_CUSTOM_PATH_PYPY3_11=pypy3.11-v7.3.19-linux64/bin/pypy \
  HATCH_PYTHON_CUSTOM_VERSION_PYPY3_11=v7.3.19 \
  hatch test --python pypy3.11
Skipped 1 incompatible environment:
hatch-test.pypy3.11 -> cannot locate Python: pypy3.11

Hatch test matrix from pyproject.toml: (all other Pythons work)

# ...

[[tool.hatch.envs.hatch-test.matrix]]
python = ["3.10", "3.11", "3.12", "3.13", "pypy3.10", "pypy3.11"]

# ...

Does anyone have a working example of Hatch using a custom Python distribution which we could examine?