Can not find meson executable in Python 3.10, meson 0.62.1

[Nic30]

I am not sure when this stopped working but with latest meson and python there see to be some issue and meson executable does not seem to be in path.
Maybe we can import meson and execute it directly instead of relying on its executable?

[build-system]
requires = [
   "wheel",
   "meson>=0.62.1",
   "mesonpep517",
   "pybind11>=2.8.1",
   "ninja",
]
build-backend = "mesonpep517.buildapi"

Full pyproject.toml: https:/Nic30/hwtHls/blob/llvm_mir_integration/pyproject.toml

Processing /root/project
  Installing build dependencies ... -� �\� �|� �/� �-� �\� �done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... -� �\� �|� �/� �-� �\� �|� �/� �-� �\� �|� �/� �done
  Preparing metadata (pyproject.toml) ... -� �error
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [22 lines of output]
      Traceback (most recent call last):
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
          main()
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
        File "/usr/lib/python3/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 164, in prepare_metadata_for_build_wheel
          return hook(metadata_directory, config_settings)
        File "/tmp/pip-build-env-3ri6jxdy/overlay/local/lib/python3.10/dist-packages/mesonpep517/buildapi.py", line 269, in prepare_metadata_for_build_wheel
          meson_configure(builddir, config_settings=config_settings)
        File "/tmp/pip-build-env-3ri6jxdy/overlay/local/lib/python3.10/dist-packages/mesonpep517/buildapi.py", line 51, in meson_configure
          meson(*args, builddir=args[0], config_settings=config_settings)
        File "/tmp/pip-build-env-3ri6jxdy/overlay/local/lib/python3.10/dist-packages/mesonpep517/buildapi.py", line 25, in meson
          return subprocess.check_output(['meson'] + list(args))
        File "/usr/lib/python3.10/subprocess.py", line 420, in check_output
          return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
        File "/usr/lib/python3.10/subprocess.py", line 501, in run
          with Popen(*popenargs, **kwargs) as process:
        File "/usr/lib/python3.10/subprocess.py", line 966, in __init__
          self._execute_child(args, executable, preexec_fn, close_fds,
        File "/usr/lib/python3.10/subprocess.py", line 1842, in _execute_child
          raise child_exception_type(errno_num, err_msg, err_filename)
      FileNotFoundError: [Errno 2] No such file or directory: 'meson'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.


Exited with code exit status 1

Full log: https://app.circleci.com/pipelines/github/Nic30/hwtHls/195/workflows/50629ae8-6a92-4310-b7bf-a9a0fc5dd959/jobs/201

[jeandet]

hello @Nic30, I'm really sorry but I'm neither the author of this package nor this is the official repo. I forked it from https://gitlab.com/thiblahute/mesonpep517 mostly to solve a build issue on Windows.
That said your issue looks really weird to me, could it be related to the latest Meson release? Not sure I can help much more.
Note also that there is this package https:/FFY00/meson-python which seems to be more actively maintained than mesonpep517.

[Nic30]

@jeandet thank you for your response. I was thinking that this is official repo.

could it be related to the latest Meson release?

Currently I do not know but I guess it is somehow related to new pip I think that the environment is just not propagated to subprocess but I do not know exactly how pep517 work. But there seems to be fix for this issue in pull requests https://gitlab.com/thiblahute/mesonpep517/-/merge_requests/18

Closing this issue as I opened it in wrong repo.