Missing prepare_metadata_for_build_wheel attribute #55
Description
Just observed this in a 32-bit Linux SciPy CI job (log):
Processing /scipy
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status 'error'
error: subprocess-exited-with-error
× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [42 lines of output]
+ meson setup --native-file=/scipy/.mesonpy-native-file.ini -Ddebug=false -Dstrip=true -Doptimization=2 --prefix=/usr /scipy /scipy/.mesonpy-n5dcevv3/build
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 156, in prepare_metadata_for_build_wheel
hook = backend.prepare_metadata_for_build_wheel
AttributeError: module 'mesonpy' has no attribute 'prepare_metadata_for_build_wheel'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
main()
File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "/usr/local/lib/python3.8/dist-packages/pip/_vendor/pep517/in_process/_in_process.py", line 160, in prepare_metadata_for_build_wheel
whl_basename = backend.build_wheel(metadata_directory, config_settings)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 806, in build_wheel
with _project(config_settings) as project:
File "/usr/lib/python3.8/contextlib.py", line 113, in __enter__
return next(self.gen)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 759, in _project
with Project.with_temp_working_dir(
File "/usr/lib/python3.8/contextlib.py", line 113, in __enter__
return next(self.gen)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 478, in with_temp_working_dir
yield cls(source_dir, tmpdir, build_dir)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 422, in __init__
self._configure(reconfigure=bool(build_dir) and not native_file_mismatch)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 449, in _configure
self._meson(
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 437, in _meson
return self._proc('meson', *args)
File "/root/.local/lib/python3.8/site-packages/mesonpy/__init__.py", line 433, in _proc
subprocess.check_call(list(args))
File "/usr/lib/python3.8/subprocess.py", line 359, in check_call
retcode = call(*popenargs, **kwargs)
File "/usr/lib/python3.8/subprocess.py", line 340, in call
with Popen(*popenargs, **kwargs) as p:
File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/usr/lib/python3.8/subprocess.py", line 1702, 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-failedPEP 517 says that this hook is optional, so it's not clear to me that this is a problem in meson-python, it may be in pep517 or in pip.
The command that triggered it is:
CC=gcc-5 CXX=g++-5 FC=gfortran pip3 install . --no-build-isolation
Other invocations of pip install . --no-build-isolation don't have that issue. It may be that we're using pip 22.1 though - I'll try to pin it to the same 22.0.4 version as in other jobs.