Summary

stack ghci <target file> will correctly determine include directories using the cabal file's hs-source-dirs property unless the source directory starts with a ../
stack build however deals with this correctly.

Steps to reproduce

1. add a relative path to hs-source-dirs:
   ex:
   hs-source-dirs: . ../extra

2. Add a module to the ../extra directory and import it in your main file

3. run command stack build
   everything should work

4. run command stack ghci <path to main>

Expected

ghci launched with package loaded

Actual

Error in compiling due to failing to load the extra module. Because it cannot find it.

running the stack ghci command with --version shows that the ../extra directory is not being added to the list of -i<directory> flags passed to ghci.
If the module is moved to a directory that does not require a ../ prefix, then that directory is included properly.

Stack version

$ stack --version
Version 1.3.2, Git revision 3f675146590da4f3edf768b89355f798229da2a5 (4395 commits) x86_64 hpack-0.15.0

Method of installation

• static binary from https://www.stackage.org/stack/linux-x86_64-static