[libvirt] [PATCH] travis: Temporarily disable 'brew upgrade'

[Andrea Bolognani]

There are a lot of changes happening in the homebrew ecosystem
around Python, and as a consequence 'brew upgrade' hasn't been
able to complete successfully for several days.

Temporarily disable upgrading the system before building: this
will need to be reverted once the upgrade issues have been
sorted out.

Signed-off-by: Andrea Bolognani <abologna at redhat.com>
---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 79f30f3090..c891ef419c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -100,7 +100,7 @@ env:
     - VIR_TEST_DEBUG=1
 
 before_install:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update && brew upgrade && brew install rpcgen yajl xz && brew link --force python at 2; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update && brew install rpcgen yajl xz && brew link --force python at 2; fi
 
 before_script:
   - ./autogen.sh --prefix=$(pwd)/install-root
-- 
2.14.3