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Recompilation avoidance doesn't work with addCorePlugin

Summary

Please read the guidance in [https://gitlab.haskell.org/ghc/ghc/-/wikis/report-a-bug] and write a brief description of the issue.

Steps to reproduce

I made a separate repository to demonstrate/reproduce the issue https://github.com/Unisay/plugin-recomp-repro

Expected behavior

I expect that changes in a GHC Plugin to cause recompilation of modules that depend on it via addCorePlugin

Environment

  • GHC version used: 9.4.8 (likely newer versions too, but I didn't check)

Optional:

  • Operating System: Linux
  • System Architecture: x86_64
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