Cabal for GHC 7.8

[Herbert Valerio Riedel]

On 2014-06-28 at 07:48:16 +0200, Manuel M T Chakravarty wrote:
> I noticed that the Cabal package doesn’t have a branch for ghc-7.8:
>
>   http://git.haskell.org/packages/Cabal.git
>
> Is that intended?

A ghc-7.8 branch is not really needed, as Cabal is registered as
submodule in ghc.git's ghc-7.8 branch. It's just sync-all that 

> Maybe as a result the instructions at 
>
>   https://ghc.haskell.org/trac/ghc/wiki/Building/GettingTheSources
>
> to check out a branch from the *GitHub mirror repos* doesn’t work
> either. 

For cloning via the GitHub-mirror[1] I'd recommend using the scheme as
described in [2]. That is, set up url-rewrites (that take also into
account the 'packages/foo' -> 'packages-foo' rewriting):

  git config --global url."git://github.com/ghc/".insteadOf git://git.haskell.org/
  git config --global url."git://github.com/ghc/packages-".insteadOf git://git.haskell.org/packages/

and then clone as if you would from git://git.haskell.org

   git clone -b ghc-7.8 git://git.haskell.org/ghc.git ghc-7.8
   cd ghc-7.8
   ./sync-all get -b ghc-7.8

all network access will be redirected to github.com instead.


 [1]: Btw, why do you want to use the github mirror instead of git://git.haskell.org?

 [2]: https://ghc.haskell.org/trac/ghc/wiki/WorkingConventions/Git/Submodules#UsingtheGitHubGHCMirror