sharing source directory between components results in false positive unused

[dten]

I have a reproduction of a false positive unused

dten/weeder-false-positive-repro@a24ebf6

this commit says main: src/ActuallyUsedModule.hs:6:1: performReset

i can make the false positive go away by not sharing source directories between components

dten/weeder-false-positive-repro@baf6bd8

it might be interesting that the bad commit produces these hie files

./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/ActuallyUsedModule.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/Paths_apps.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/app/app-tmp/Main.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/app/app-tmp/ActuallyUsedModule.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/app/app-tmp/Paths_apps.hie

and the good commit produces these

./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/ActuallyUsedModule.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/Paths_apps.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/app/app-tmp/Main.hie
./apps/.stack-work/dist/x86_64-linux/ghc-9.8.2/build/app/app-tmp/Paths_apps.hie