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Is there a way, either standard, or a clever hack, to make invoking GHC on a file only run the type-checker? E.g.
$ ghc --just-check-the-types x.hs
$
No output files, no .hi or .o, etc. Don’t want to/can’t use the GHC API. Just talking about the command-line program, here.
What about
ghc -fno-code file.hs. It will generate no other files and will show errors if your files don’t typecheck.Caveat: this will not do analysis on in-exhaustive pattern matches, so if you want those additional useful warnings, don’t use this option alone.