Arch Linux User Repository

I hopefully fixed it. The build wasn't working with the latest ghc. I've found that it works with ghc8.0, but likely works with ghc8.2 as well (although I didn't test that).

Hey gyus, build fails:

Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: matterhorn-50200.0.0 (user goal)
[__1] next goal: stm (dependency of matterhorn)
[__1] rejecting: stm-2.5.0.0/installed-2.5..., stm-2.5.0.0 (conflict:
matterhorn => stm>=2.4 && <2.5)
[__1] trying: stm-2.4.5.1
[__2] next goal: base (dependency of matterhorn)
[__2] rejecting: base-4.12.0.0/installed-4.1... (conflict: stm => base>=4.3 &&
<4.12)
[__2] rejecting: base-4.12.0.0, base-4.11.1.0, base-4.11.0.0, base-4.10.1.0,
base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0,
base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1,
base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0,
base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0,
base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from
non-upgradeable package requires installed instance)
[__2] fail (backjumping, conflict set: base, matterhorn, stm)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: matterhorn, base, stm
Note: when using a sandbox, all packages are required to have consistent
dependencies. Try reinstalling/unregistering the offending packages or
recreating the sandbox.

As I don't know cabal, I'm not sure how to deal with this. Can you help?

Thanks. I added ghc and happy (pretty-show is built locally in the cabal sandbox).

Hi,
Matterhorn wont build without ghc and haskell-pretty-show packages.
I think you should add it to makedeps.