DM-48430: Add ability to get all installed packages from system

[timj]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[timj]

@kfindeisen can you give this a try please? One thing that might be an issue is that the "include_all" option historically includes all the EUPS build numbers. I'm not sure what my motivation for adding that was in #117 but it's an easy fix to remove the tags if we decide they get in the way.

[timj]

Reading the Jira ticket I think @mfisherlevine wanted the weekly tag to show up in the version history. The problem is that it also reports build tags:

testdata_cfht gfc90949391 (b7235 b7237 b7238 b7239 b7240 b7241 b7242 b7243 b7244 b7245 b7246 b7247 b7248 b7249 b7250 b7251 b7252 b7253 b7254 b7255 b7256 b7257 b7258 b7259 b7260 b7261 b7262 b7263 b7264 b7265 b7266 b7267 b7268 b7269 b7270 b7272 b7273 b7274 b7275 b7277 b7278 b7279 b7282 b7283 b7284 b7285 b7286 b7287

[codecov]

Codecov Report

Attention: Patch coverage is 97.43590% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.19%. Comparing base (bd976da) to head (f0fe60a).
Report is 13 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
python/lsst/utils/packages.py	96.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #198      +/-   ##
==========================================
+ Coverage   94.15%   94.19%   +0.03%     
==========================================
  Files          47       47              
  Lines        3440     3463      +23     
==========================================
+ Hits         3239     3262      +23     
  Misses        201      201              

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[kfindeisen]

Well, it is faster (0.5 s vs. 2.1 s on S3DF). I'm not sure how to test its robustness, though -- I can't run PP without a container, and the lru_cache would suppress any changes anyway.

I didn't see any build numbers in testing.

[mfisherlevine]

As ugly as the build tags are there, I don't think I have anything that relies on the weekly being there alone, and if I need it, I can always try adding a regex of some sort, so I think that's fine (at least for me).

[kfindeisen]

I'm a bit concerned about the new unit test for fromSystem, since it requires the exact opposite of what the documentation says. Which is the intended behavior?

Also, please document the new features and bugfixes in doc/changes.

[kfindeisen]

Looks much better, thanks! I won't speculate on why there are now 14 commits instead of a handful.

[timj]

Thanks. I'll squash a bit now that we got agreement on the approach.