small fixes

[disberd]

This PR removes a hanging call to the clean_path function which is not used anymore.
It also adds support for providing a target package to @frompackage using a @raw_str string literal

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.40%. Comparing base (3cac4f3) to head (074a7fb).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #49   +/-   ##
=======================================
  Coverage   99.40%   99.40%           
=======================================
  Files          16       16           
  Lines        1172     1183   +11     
=======================================
+ Hits         1165     1176   +11     
  Misses          7        7           

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