[commit: ghc] wip/cabal_parsec: Enable building Cabal with parsec (0d11176)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : wip/cabal_parsec
Link       : http://ghc.haskell.org/trac/ghc/changeset/0d11176c20feb3e8627e6297735b1b952613896a/ghc

>---------------------------------------------------------------

commit 0d11176c20feb3e8627e6297735b1b952613896a
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Tue Jul 18 23:08:55 2017 +0200

    Enable building Cabal with parsec
    
    Cabal's parser has been rewritten in terms of Parsec
    (which is not enabled yet in Cabal-2.0 by default, but can be enabled by
    a cabal flag). The plan for Cabal is to drop support for the non-parsec
    parser, so we need to prepare GHC to cope with new situation.
    
    However, this means that lib:Cabal requires three new library
    dependencies:
    
     - parsec
     - text
     - mtl
    
    What complicates matters is that we need to build `ghc-cabal` early on
    during the bootstrap phase which currently needs to invoke `ghc --make`
    directly. So these additional dependencies need to be integrated into
    the monolithic `ghc --make` invocation which produces the `ghc-cabal`
    executable.


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0d11176c20feb3e8627e6297735b1b952613896a
 .gitmodules             | 12 ++++++++++++
 ghc.mk                  | 11 +++++++++--
 libraries/mtl           |  1 +
 libraries/parsec        |  1 +
 libraries/text          |  1 +
 mk/warnings.mk          |  5 +++++
 packages                |  3 +++
 rules/sdist-ghc-file.mk | 31 +++++++++++++++++++++++++++++++
 utils/ghc-cabal/ghc.mk  | 25 ++++++++++++++++++++++---
 9 files changed, 85 insertions(+), 5 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 0d11176c20feb3e8627e6297735b1b952613896a