[commit: ghc] master: Bump Cabal submodule (a9f680f)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/a9f680f631e20104661e357393f9704e2f8ba234/ghc

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

commit a9f680f631e20104661e357393f9704e2f8ba234
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Sat Mar 3 22:05:44 2018 -0500

    Bump Cabal submodule


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a9f680f631e20104661e357393f9704e2f8ba234
 libraries/Cabal | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index 98a72c9..7ce486e 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit 98a72c9da6f56a9917b66d7532df755719ec7a25
+Subproject commit 7ce486e6553d24877ae3b23868b95d20bf83760a