Don't consider venv as externally managed

[krisl]

Allow installation into virtual environments without requiring --break-system-packages

[nuclearsandwich]

Thanks for the PR. Since you contributed a test for this function in #1000 is it worth rebasing now that it has merged and covering the virtualenv case in the test?

[nuclearsandwich]

Do you know if this is a sufficiently generic way to detect virtual environments including those created by other tools like pipenv, uv, etc?

[krisl]

Great question! I believe so, its from this section docs.python.org

I've used this with venv and uv

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.10%. Comparing base (ad3a610) to head (5ca57d2).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #999      +/-   ##
==========================================
+ Coverage   71.76%   72.10%   +0.34%     
==========================================
  Files          44       44              
  Lines        3488     3492       +4     
  Branches      686      687       +1     
==========================================
+ Hits         2503     2518      +15     
+ Misses        808      796      -12     
- Partials      177      178       +1     

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[krisl]

Thanks for the PR. Since you contributed a test for this function in #1000 is it worth rebasing now that it has merged and covering the virtualenv case in the test?

cool, I rebased and added a test in there