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scalahaskellsbtcabal

SBT-like features in the Haskell build ecosystem

I've been using Scala with SBT quite a bit lately. The REPL loop of has a handy feature: ~ COMMAND, meaning perform COMMAND for every source file change in the project. For instance:

~ test

and 

~ compile

are terrifically useful for rapid development. I wonder, does anyone know of something similar for Haskell, a cabal shell, maybe?

Solution

  • You can get something like this very easily using inotifywait.

    Just fire up a terminal in your project directory and run something like this:

    $ while inotifywait -qq -r -e modify .; do cabal build && ./dist/build/tests/tests; done

    This also works for any other language; just insert the build commands of your choice.