[commit: packages/process] fix-appveyor: appveyor: use -Syu (645b644)

[git at git.haskell.org]

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

On branch  : fix-appveyor
Link       : http://ghc.haskell.org/trac/ghc/changeset/645b644b177206e0ad61d9b49f06e07637541954/process

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

commit 645b644b177206e0ad61d9b49f06e07637541954
Author: Michael Snoyman <michael at snoyman.com>
Date:   Sun Nov 13 11:48:24 2016 +0200

    appveyor: use -Syu


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

645b644b177206e0ad61d9b49f06e07637541954
 appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appveyor.yml b/appveyor.yml
index 2c313d4..f3d7e2b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,5 +16,5 @@ test_script:
 - stack setup > nul
 # The ugly echo "" hack is to avoid complaints about 0 being an invalid file
 # descriptor
-- echo y | stack exec -- sh -c "pacman -Sy autoconf perl && autoreconf -i"
+- echo y | stack exec -- sh -c "pacman -Syu autoconf perl && autoreconf -i"
 - echo "" | stack --no-terminal test --pedantic