How do I get a stack build command to dump the GHC Core?
I've tried this, to no avail:
stack build :hello_world --ghc-options '-ddump-simpl'
Make sure to clean before, or force recompilation via the stack option --force-dirty and ghc option -fforce-recomp.
The files are dumped somewhere around .stack-work/dist/.../build/hello_world/hello_world-tmp/.