fix(actions): swap sha256sum for shasum -a 256

[kenibrewer]

This addresses an issue in macOS builds may be impacting caching. The command sha256sum which doesn't exist in macOS-latest is replaced with shasum -a 256 which is present in both ubuntu-latest and macOS-latest

Closes #1389

[codecov]

Codecov Report

Merging #1390 (6141276) into master (99bdd11) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1390      +/-   ##
==========================================
+ Coverage   97.24%   97.30%   +0.06%     
==========================================
  Files          48       48              
  Lines        4423     4423              
==========================================
+ Hits         4301     4304       +3     
+ Misses        122      119       -3     

Flag	Coverage Δ
unittests	97.30% <ø> (+0.06%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 1 file with indirect coverage changes

[sisp]

Thanks for discovering this error and taking the initiative to fix it, @kenibrewer! 🙏

Your current fix works for macOS and Ubuntu, but it doesn't work for Windows:

D:\a\_temp\29fa6760-37f4-4d7b-9324-e184f44d2852.sh: line 1: shasum: command not found

I see three options:

1. Use Python's hashlib module (see my inline suggestions).
2. Use the cache key computation from Poetry's own CI config.
3. Make this step conditioned on the OS and add another one with sha256sum for Windows.

I'm leaning towards solution 2, but solution 1 is less intrusive. Solution 3 adds too much duplicate code for my taste, but I wanted to mention it nevertheless.

[kenibrewer]

1. Use Python's hashlib module (see my inline suggestions).
2. Use the cache key computation from Poetry's own CI config.
3. Make this step conditioned on the OS and add another one with sha256sum for Windows.

I'm leaning towards solution 2, but solution 1 is less intrusive. Solution 3 adds too much duplicate code for my taste, but I wanted to mention it nevertheless.

I like solution 2 best as well. It's a lot more readable while solution 1 is pretty hard to parse.

[kenibrewer]

@sisp Can I get another workflow run?

[kenibrewer]

Looks like that didn't work for the windows install either.

Run echo version=$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))") >> $GITHUB_OUTPUT
  echo version=$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))") >> $GITHUB_OUTPUT
  shell: C:\Program Files\PowerShell\7\pwsh.EXE -command ". '{0}'"
  env:
    LANG: en_US.utf-8
    LC_ALL: en_US.utf-8
    PIP_CACHE_DIR: D:\a\copier\copier/.cache/pip
    POETRY_CACHE_DIR: D:\a\copier\copier/.cache/pypoetry
    POETRY_VIRTUALENVS_IN_PROJECT: true
    PRE_COMMIT_HOME: D:\a\copier\copier/.cache/pre-commit
    PYTEST_ADDOPTS: 
    PYTHONIOENCODING: UTF-8
    pythonLocation: C:\hostedtoolcache\windows\Python\3.9.13\x64
    PKG_CONFIG_PATH: C:\hostedtoolcache\windows\Python\3.9.13\x64/lib/pkgconfig
    Python_ROOT_DIR: C:\hostedtoolcache\windows\Python\3.9.13\x64
    Python[2](https://github.com/copier-org/copier/actions/runs/6683900995/job/18160692065?pr=1390#step:5:2)_ROOT_DIR: C:\hostedtoolcache\windows\Python\[3](https://github.com/copier-org/copier/actions/runs/6683900995/job/18160692065?pr=1390#step:5:3).9.13\x6[4](https://github.com/copier-org/copier/actions/runs/6683900995/job/18160692065?pr=1390#step:5:4)
    Python3_ROOT_DIR: C:\hostedtoolcache\windows\Python\3.9.13\x64

Cache restored successfully
Cache restored from key: cache|Windows||212c846ea7c96894e2ee344b3ed706190f898f3da49de7092b13c63149eea81b|c860f4[5]

I set up a test PR into my own fork so I can run the workflows myself. I'll probably test option 1 next and see if I can make it clearer and readable.

[kenibrewer]

@sisp This is now passing all tests and generates cache keys on all platforms.

[sisp]

Perfect, @kenibrewer, thank you! 🙏