[commit: ghc] ghc-8.6: circleci: Run cabal update with -v (f28b05b)

[git at git.haskell.org]

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

On branch  : ghc-8.6
Link       : http://ghc.haskell.org/trac/ghc/changeset/f28b05b5e49487317885472afcdf7c231ad9a912/ghc

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

commit f28b05b5e49487317885472afcdf7c231ad9a912
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Fri Sep 21 16:05:30 2018 -0400

    circleci: Run cabal update with -v
    
    The cabal update command appears to be timing out with no output after 10 minutes.


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

f28b05b5e49487317885472afcdf7c231ad9a912
 .circleci/prepare-system.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/prepare-system.sh b/.circleci/prepare-system.sh
index dbb1011..636b792 100755
--- a/.circleci/prepare-system.sh
+++ b/.circleci/prepare-system.sh
@@ -44,7 +44,7 @@ case "$(uname)" in
         fail "TARGET=$target not supported"
       fi
     else
-      cabal update
+      cabal update -v
       cabal install --reinstall hscolour
       sudo ln -s /home/ghc/.cabal/bin/HsColour /usr/local/bin/HsColour || true
     fi