[commit: packages/binary] master: [travis-ci] Fix some build breakage (#130) (74add75)

[git at git.haskell.org]

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

On branch  : master
Link       : http://git.haskell.org/packages/binary.git/commitdiff/74add75b768879d815a8a4a0aee2132bbf28eb31

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commit 74add75b768879d815a8a4a0aee2132bbf28eb31
Author: Lennart Kolmodin <kolmodin at gmail.com>
Date:   Sun Jan 22 18:56:14 2017 +0100

    [travis-ci] Fix some build breakage (#130)
    
    Split cabal install into two invocations. Cabal seems to not handle the 'cabal-version' constraint correctly, and ends up ordering the packages to install in the wrong order.
    Installing Cabal separately first, and then all other packages, seems to work around the problem.


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74add75b768879d815a8a4a0aee2132bbf28eb31
 .travis.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index c9112c1..703cd36 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,8 +31,10 @@ install:
 # workaround for https://ghc.haskell.org/trac/ghc/ticket/9221
  - sed -i 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config
  - cabal sandbox init
-# can't use "cabal install --only-dependencies --enable-tests --enable-benchmarks" due to dep-cycle
- - cabal install "bytestring >= 0.10.2" criterion deepseq mtl "QuickCheck >= 2.8" HUnit "test-framework-quickcheck2 >= 0.3" "random >= 1.0.1.0" attoparsec cereal 'Cabal == 1.24.*' tar zlib -j
+# can't use "cabal install --only-dependencies --enable-tests --enable-benchmarks" due to dep-cycle.
+# must split in two separate 'cabal install's since cabal doesn't update the cabal library before it's needed in 'cabal-version' constraints.
+ - cabal install "bytestring >= 0.10.2" 'Cabal == 1.24.*' -j
+ - cabal install criterion deepseq mtl "QuickCheck >= 2.8" HUnit "test-framework-quickcheck2 >= 0.3" "random >= 1.0.1.0" attoparsec cereal tar zlib -j
 
 script:
  - cabal configure --enable-tests --enable-benchmarks -v2 --ghc-options=-fno-spec-constr