I'm really excited about stack because it makes building Haskell projects super easy. Right now the only thing blocking me from using it for everything is that the current crop of vim plugins all rely on either ghc-mod (which doesn't appear to be compatible with stack at all) or hdevtools.

Generally, the way to execute a command in the stack context is stack exec. Trying to do stack exec hdevtools check src/Main.hs in a project of mine gives the following error:

Cabal error: Use of GHC's environment variable GHC_PACKAGE_PATH is incompatible with Cabal. Use the flag --package-db to specify a package database (it can be used multiple times).

Stack can output the path to the current package database with stack path. I'd like to try testing to see if we can pass that into hdevtools and it would be able to run in a stack environment, but I'm not sure where in the code it's calling out to cabal or GHC. If anyone could give me some pointers there, that'd help out a lot with integrating with the new tool 😄