I'm attempting to use ghc-mod and emacs to get on the fly compiling working again. This is always pleasing when it works, but it seems a never ending challenge to get it to find all my dependences :-( Several of my cabal packages require autogenerated code which used to end up in dist/build/autogen. ghc-mod is configured to search this directory, as per: https://github.com/kazu-yamamoto/ghc-mod/blob/169069f6232c617f06f24b9caa40f8... However since starting to use cabal sandboxes, the generated code ends up in a directory like this: dist/dist-sandbox-c4c8b1d4/build/autogen/ What is this hashcode for? Is it always generated when using a sandbox? If I have code (like ghc-mod) that needs to access the build directory, how do I work out the value of the hashcode? Thanks, Tim