fix: inferred package names on windows

[jmattheis]

Fixes #198

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.46%. Comparing base (ca8ed26) to head (66518be).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #199   +/-   ##
=======================================
  Coverage   95.46%   95.46%           
=======================================
  Files          49       49           
  Lines        3241     3241           
=======================================
  Hits         3094     3094           
  Misses        114      114           
  Partials       33       33           

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