stack build fails to pass haskell-gi to cabal

[koterpillar]

When haskell-gi and haskell-gi-base are both specified as extra-deps in stack.yaml:

extra-deps:
- haskell-gi-base-0.10
- haskell-gi-0.10.1
- xdg-basedir-0.2.2

The project fails to build with:

$ stack build
xdg-basedir-0.2.2: configure
xdg-basedir-0.2.2: build
haskell-gi-base-0.10: configure
haskell-gi-base-0.10: build
xdg-basedir-0.2.2: copy/register
haskell-gi-base-0.10: copy/register
haskell-gi-0.10.1: configure
haskell-gi-0.10.1: build
haskell-gi-0.10.1: copy/register
hgitest-0.1.0.0: configure
Configuring hgitest-0.1.0.0...
setup-Simple-Cabal-1.22.4.0-x86_64-linux-ghc-7.10.2: At least the following
dependencies are missing:
haskell-gi -any

Note that stack exec -- ghc-pkg list | grep haskell-gi only lists haskell-gi-base-0.10 and not haskell-gi.

Steps to reproduce:

• Create a new project with stack new.
• Add haskell-gi to build-depends in the .cabal file.
• Add the following to extra-deps in stack.yaml:

- haskell-gi-base-0.10
- haskell-gi-0.10.1
- xdg-basedir-0.2.2

• Run stack build.

Expected result: The project builds without errors.
Actual result: The project fails to build, see above.

Here's the full project demonstrating the issue: https://github.com/koterpillar/hgitest

[koterpillar]

I found that the problem is haskell-gi not providing a library, only an executable. Not sure whether this is something either Stack or Cabal can warn about, closing.

[rvion]

@koterpillar I wish it would work anyway, could you reopen just to let someone comment about if it's normal or not ?

[mgsloan]

This is normal, the error message is occurring while configuring hgitest, because it can't find the haskell-gi library - see this cabal issue. You probably want to add haskell-gi the build-tools list in your cabal file.