c2hs

[joeyh]

git-annex has many build failures due to a dependency using c2hs which is not installed on the builder. Of course, there is currently no way to specify such dependencies in a cabal file.

Would it make sense to have c2hs instaled by default on the builders?

[hvr]

It's actually already installed, but the reports haven't been regenerated yet since then

Of course, there is currently no way to specify such dependencies in a cabal file

actually there is... via buildtools, that's what causes the message

setup-Simple-Cabal-1.22.4.0-x86_64-linux-ghc-7.10.2: The program 'c2hs' is required but it could not be found.

The problem is rather that cabal isn't supposed to install buildtools automatically (EDIT: this statement is obsolete and applied to the legacy v1-build system; with v2-build cabal is in fact supposed to procure the respective versions of the requested tools as declared via buildtools/build-tool-depends)

[bergmark]

@hvr can we somehow expose marking packages as "dirty" to get the builder to redo them?

[bergmark]

Oh i already filed this as #18 :)