Broken cross-compilation with latest build

[xhochy]

Solution to issue cannot be found in the documentation.

• I checked the documentation.

Issue

With the last PR (#87) cross-compilation seems to be broken on linux-aarch64 (not linux-ppc64le though). The cross-python activation simply fails with the following output:

Setting up cross-python
ERROR: 'HOST_GNU_TYPE'

Running the activation using bash -x, I can see it breaks at the following line:

++++ /home/uwe/mambaforge/conda-bld/awscrt_1665480308769/_build_env/bin/python -m crossenv /home/uwe/mambaforge/conda-bld/awscrt_1665480308769/_h_env_placehold_placehold_placehold_placehold_placehold_plac
ehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/python --sysroot /home/uwe/mambaforge/conda-bld/awscrt_16
65480308769/_build_env/aarch64-conda-linux-gnu/sysroot --without-pip /home/uwe/mambaforge/conda-bld/awscrt_1665480308769/_build_env/venv --sysconfigdata-file /home/uwe/mambaforge/conda-bld/awscrt_16654803
08769/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_p
laceh/lib/pypy3.8/_sysconfigdata__linux_aarch64-linux-gnu.py --cc /home/uwe/mambaforge/conda-bld/awscrt_1665480308769/_build_env/bin/aarch64-conda-linux-gnu-cc --cxx c++

Installed packages

pypy3.9:            7.3.9-h57c6639_4     conda-forge

Environment info

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[xhochy]

FYI @mattip

[mattip]

Breaking that line down it turns into

<path>/bin/python -m crossenv <other_path>/bin/python 
   --sysroot <path>/aarch64-conda-linux-gnu/sysroot 
   --without-pip <path>/venv 
   --sysconfigdata-file <other_path>/lib/pypy3.8/_sysconfigdata__linux_aarch64-linux-gnu.py
   --cc <path>/bin/aarch64-conda-linux-gnu-cc --cxx c++

so it seems like the underlying package is crossenv - is that correct? I see it uses HOST_GNU_TYPE. I wonder how this worked up to PR #96.

[isuruf]

https://github.com/conda-forge/pypy3.6-feedstock/blob/main/recipe/build.sh#L124 has a typo. host_gun_type instead of host_gnu_type

[mattip]

OY. Good catch. And then the call which should have pushed HOST_GNU_TYPE into the sysconfigdata

pypy -m sysconfig --generate-posix-vars HOST_GNU_TYPE $host_gnu_type

is actually called with an empty argument, so the special PyPy argument processing fails to set HOST_GNU_TYPE.