Avoid deleting the source file when linking

[kurtmckee]

Fixes #360

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.63%. Comparing base (9cd5d07) to head (733bb82).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #373      +/-   ##
==========================================
+ Coverage   85.56%   85.63%   +0.06%     
==========================================
  Files          20       20              
  Lines         693      696       +3     
==========================================
+ Hits          593      596       +3     
  Misses        100      100              

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