Feat: add minimum save strategy

[agoose77]

Pull Request Check List

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

This PR adds --save-minimum to pdm add for cases where the user doesn't want an upper bound (e.g. non SemVer uses)

See also

• https://bernat.tech/posts/version-numbers/
• https://hynek.me/articles/semver-will-not-save-you/

[agoose77]

I just want to take the time to say how cool this project is. It's really easy to navigate the source code, and I like the fact that the scope of pdm is quite small. I don't use PEP 582, and it doesn't feel like I'm punished for that, which is also nice!

I was looking for something a bit more customiseable than poetry, and uses PEP 621, and pdm is perfect.

[codecov-commenter]

Codecov Report

Merging #752 (2a9d218) into main (bf4ea7a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #752   +/-   ##
=======================================
  Coverage   83.77%   83.77%           
=======================================
  Files          73       73           
  Lines        6143     6146    +3     
  Branches     1094     1095    +1     
=======================================
+ Hits         5146     5149    +3     
  Misses        705      705           
  Partials      292      292           

Flag	Coverage Δ
unittests	83.56% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
pdm/cli/options.py	96.42% <100.00%> (+0.04%)	⬆️
pdm/cli/utils.py	82.91% <100.00%> (+0.10%)	⬆️

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[frostming]

@agoose77 Welcome to PDM! Care to update the completion scripts under pdm/cli/completions? It is okay if you won't, I will do that instead.

[agoose77]

@agoose77 Welcome to PDM! Care to update the completion scripts under pdm/cli/completions? It is okay if you won't, I will do that instead.

Darn, I thought I'd caught everything! Will do.

[agoose77]

@frostming I've updated the completions, and modified the completions script to support ZSH and powershell. Was this a deliberate omission, or am I OK to keep the fix in this PR? I can't test the PS1 changes without a Windows machine, and it seems like a big diff.

[frostming]

oh, just keep them and add a single option manually

[agoose77]

oh, just keep them and add a single option manually

OK, will revert the change. Out of interest, why do we not use the completions generator for powershell/zsh? I noticed some spelling errors in the hand-crafted ones.

[frostming]

oh, just keep them and add a single option manually

OK, will revert the change. Out of interest, why do we not use the completions generator for powershell/zsh? I noticed some spelling errors in the hand-crafted ones.

because they are hand written, for some value completion. no autocomplete engine can generate such customized contents.

[agoose77]

Right, makes sense. I think this PR is done from my end, are there any outstanding change to be made? :)

[frostming]

LGTM, thanks for fixing all the typos