PDM with Anaconda env on M1 ARM64 Mac tips

[Matheus-Ribeiro-ITA]

Hi, community!

I'm new to PDM and have been trying to install some packages with PDM on my M1 Mac. However I'm having some trouble with the ARM64 architecture, does anyone has some tips?

Context

1 - I installed PDM 2.5.3 with brew.
2 - Setup PDM and Pycharm to use the conda env with python 3.8
3 - If I run pdm info --env it returns the json below. I noticed that without conda the becomes "platform_machine": "ARM64",

{
  "implementation_name": "cpython",
  "implementation_version": "3.8.16",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "22.4.0",
  "platform_system": "Darwin",
  "platform_version": "Darwin Kernel Version 22.4.0: Mon Mar  6 20:59:28 PST 2023; root:xnu-8796.101.5~3/RELEASE_ARM64_T6000",
  "python_full_version": "3.8.16",
  "platform_python_implementation": "CPython",
  "python_version": "3.8",
  "sys_platform": "darwin"
}

4 - If I try to install and run some packages it will get an error that wrong architecture.
Bellow I install and try to run matplotlib anb get a :
(mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')

A full command and terminal output.

(pdm_3_8) Matheus_Sampaio@**** rb % pdm install
Synchronizing working set with lock file: 1 to add, 1 to update, 0 to remove

  ✔ Update pip 23.0.1 -> 23.1.2 successful
  ✔ Install matplotlib 3.7.1 successful
Installing the project as an editable package...
  ✔ Update rb 0.1.1+editable -> 0.1.1 successful

🎉 All complete!

(pdm_3_8) Matheus_Sampaio@**** rb % python
Python 3.8.16 (default, Mar  1 2023, 21:19:10) 
[Clang 14.0.6 ] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/__init__.py", line 131, in <module>
    from . import _api, _version, cbook, _docstring, rcsetup
  File "/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/cbook/__init__.py", line 30, in <module>
    from matplotlib import _api, _c_internal_utils
ImportError: dlopen(/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/_c_internal_utils.cpython-38-darwin.so, 0x0002): tried: '/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/_c_internal_utils.cpython-38-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/_c_internal_utils.cpython-38-darwin.so' (no such file), '/Users/Matheus_Sampaio/opt/anaconda3/envs/pdm_3_8/lib/python3.8/site-packages/matplotlib/_c_internal_utils.cpython-38-darwin.so' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64'))

5 - I can install with pip forcing the architecture with: ARCHFLAGS="-arch arm64" pip install matplotlib==3.7.1 --compile --no-cache-dir

Questions

1 - Is it expected to be "platform_machine": "x86_64" even though my computer is ARM64?
2 - Is there a similar command for ARCHFLAGS="-arch arm64" pip install on PDM?

[Matheus-Ribeiro-ITA]

For anyone with the same issue, I solved it with help of this Medium article:
https://towardsdatascience.com/python-conda-environments-for-both-arm64-and-x86-64-on-m1-apple-silicon-147b943ffa55

CONDA_SUBDIR=osx-arm64 conda create -n pdm_arm64 python=3.9.13
conda activate pdm_arm64