fix using PackageCompiler with local Julia builds in some cases

[KristofferC]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.27%. Comparing base (c1e37c4) to head (9424eb0).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1077      +/-   ##
==========================================
+ Coverage   86.21%   86.27%   +0.06%     
==========================================
  Files           3        3              
  Lines         805      809       +4     
==========================================
+ Hits          694      698       +4     
  Misses        111      111              

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