Can you have different compilers and resolvers on Stack?

Question

I have a Stack project that can build both GHCJS and GHC binaries. How can I specify on stack.yaml that builds should use both compilers?

Answer 1

I think you have to either

• use two different files, say ghc.yaml and ghcjs.yaml, you can then use stack --stack-yaml ghc.yaml or stack --stack-yaml ghcjs.yaml to use those

  • you can set the compiler ghc or ghcjs by setting the resolver (see haskellstack.org/config#resolver)
  • or there is a compiler option (see haskellstack.org/config#compiler)

• or directly use the commandline option --compiler