Hi folks, as of right now, we've got a new ghc6 version (6.8) in universe. Since all haskell libraries depend on the specific ghc6 version, all of these currently have unmet dependencies and need to be rebuilt. Some are possibly not compatible to the new compiler, and hence need manual adjustment or new upstream versions.
apt-cache -i unmet | grep ghc6 should give a rough working list. Fortunately, Debian is doing this transition at the moment as well, so we can hopefully sync as many libraries as possible from unstable. Some hints: Most library packages use either haskell-devscripts or haskell-utils to set the dependencies against ghc6. Packages using haskell-devscripts should pick up the new dependencies automatically when building. For packages that use haskell-utils, make sure to have ghc6 and haskell-utils installed. Run update-haskell-control in the package directory to regenerate the control file from control.in with the newer ghc6 dependencies. If you have a haskell library, that (build-)depends on another haskell library, please also ensure that this dependency is versioned, to at least require the rebuilt version of the library. Otherwise it might get rebuilt in the wrong order, which might even succeed but results in a broken package. (some packages also have versioned build-depends on ghc6 set, to achieve the same effect). P.S.: Before starting, haskell-utils and haskell-devscripts need to be synced from unstable, but I guess that this will happen very soon (bug #182505 and bug #182522). Cheers, Stefan.
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