Install fails on M1 Mac - PyQT5/SIP module issue

[castillar]

Attempting to run pip install --user . on an M1 Macbook Pro fails with a dependency error — it attempts to install PyQT5, which requires sip, which then fails due to difficulties with installing PyQT5 on ARM. I put the stack trace below; the error appears related to this error with rmview—the suggestion there is that updating to PyQT6 that has multi-arch support is the "correct" answer, but I know that's definitely not a small task since the API changed!

I've tried a couple of the recommended workarounds (install through Homebrew, install under Rosetta) and haven't gotten anything working yet; would love to hear if anyone else has success with this.

---

Stack Trace:

└─> pip install --user .    
Processing /Users/jpurvis/src/external/remy
  Installing build dependencies ... error
  error: subprocess-exited-with-error
  
  × pip subprocess to install build dependencies did not run successfully.
  │ exit code: 2
  ╰─> [76 lines of output]
      Collecting setuptools
        Using cached setuptools-65.5.1-py3-none-any.whl (1.2 MB)
      Collecting wheel
        Using cached wheel-0.38.2-py3-none-any.whl (36 kB)
      Collecting PyQt5
        Using cached PyQt5-5.15.7.tar.gz (3.2 MB)
        Installing build dependencies: started
        Installing build dependencies: finished with status 'done'
        Getting requirements to build wheel: started
        Getting requirements to build wheel: finished with status 'done'
      ERROR: Exception:
      Traceback (most recent call last):
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/cli/base_command.py", line 160, in exc_logging_wrapper
          status = run_func(*args)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/cli/req_command.py", line 247, in wrapper
          return func(self, options, args)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/commands/install.py", line 400, in run
          requirement_set = resolver.resolve(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/resolver.py", line 92, in resolve
          result = self._result = resolver.resolve(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/resolvelib/resolvers.py", line 481, in resolve
          state = resolution.resolve(requirements, max_rounds=max_rounds)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/resolvelib/resolvers.py", line 348, in resolve
          self._add_to_criteria(self.state.criteria, r, parent=None)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/resolvelib/resolvers.py", line 172, in _add_to_criteria
          if not criterion.candidates:
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/resolvelib/structs.py", line 151, in __bool__
          return bool(self._sequence)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 155, in __bool__
          return any(self)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 143, in <genexpr>
          return (c for c in iterator if id(c) not in self._incompatible_ids)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 47, in _iter_built
          candidate = func()
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/factory.py", line 206, in _make_candidate_from_link
          self._link_candidate_cache[link] = LinkCandidate(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 297, in __init__
          super().__init__(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 162, in __init__
          self.dist = self._prepare()
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 231, in _prepare
          dist = self._prepare_distribution()
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 308, in _prepare_distribution
          return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/operations/prepare.py", line 491, in prepare_linked_requirement
          return self._prepare_linked_requirement(req, parallel_builds)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/operations/prepare.py", line 577, in _prepare_linked_requirement
          dist = _get_prepared_distribution(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/operations/prepare.py", line 69, in _get_prepared_distribution
          abstract_dist.prepare_distribution_metadata(
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/distributions/sdist.py", line 48, in prepare_distribution_metadata
          self._install_build_reqs(finder)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/distributions/sdist.py", line 118, in _install_build_reqs
          build_reqs = self._get_build_requires_wheel()
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/distributions/sdist.py", line 95, in _get_build_requires_wheel
          return backend.get_requires_for_build_wheel()
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_internal/utils/misc.py", line 685, in get_requires_for_build_wheel
          return super().get_requires_for_build_wheel(config_settings=cs)
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/pep517/wrappers.py", line 173, in get_requires_for_build_wheel
          return self._call_hook('get_requires_for_build_wheel', {
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/pep517/wrappers.py", line 319, in _call_hook
          raise BackendUnavailable(data.get('traceback', ''))
      pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last):
        File "/opt/homebrew/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 77, in _build_backend
          obj = import_module(mod_path)
        File "/opt/homebrew/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
          return _bootstrap._gcd_import(name[level:], package, level)
        File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
        File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
        File "<frozen importlib._bootstrap>", line 992, in _find_and_load_unlocked
        File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
        File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
        File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
        File "<frozen importlib._bootstrap>", line 1004, in _find_and_load_unlocked
      ModuleNotFoundError: No module named 'sipbuild'
      
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 2
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

Version check:

└─> pip --version
pip 22.3.1 from /opt/homebrew/lib/python3.10/site-packages/pip (python 3.10)
└─> python --version
Python 3.10.8

[bordaigorl]

One thing you could try is installing qtpy via pip,
and then replace in Remy every instance of import PyQt5 with import qtpy
(e.g. from PyQt5.QtGui import * becomes from qtpy.QtGui import *).
Then replace pyqt5 with pyqt5 in setup.py.
This should kind of work except for the resource files which, iiuc are no longer supported in PyQt6.
I can look into porting to PyQt6 but I cannot promise when.