[commit: ghc] master: Bump Cabal submodule (326df5d)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/326df5d137ec1a556d77248e16f55e41b7374b1e/ghc

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

commit 326df5d137ec1a556d77248e16f55e41b7374b1e
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Mon Feb 5 20:27:10 2018 -0500

    Bump Cabal submodule


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

326df5d137ec1a556d77248e16f55e41b7374b1e
 libraries/Cabal                 | 2 +-
 testsuite/tests/driver/T4437.hs | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index d2cf3f1..578d3a5 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit d2cf3f13dad9f1172cf9371ea197d1204e9e17a2
+Subproject commit 578d3a50db818223017b8891df268d4200b8ffd3
diff --git a/testsuite/tests/driver/T4437.hs b/testsuite/tests/driver/T4437.hs
index 14d9bf4..6a46e52 100644
--- a/testsuite/tests/driver/T4437.hs
+++ b/testsuite/tests/driver/T4437.hs
@@ -40,7 +40,6 @@ expectedGhcOnlyExtensions = ["RelaxedLayout",
                              "AlternativeLayoutRule",
                              "AlternativeLayoutRuleTransitional",
                              "EmptyDataDeriving",
-                             "BlockArguments",
                              "NumericUnderscores"]
 
 expectedCabalOnlyExtensions :: [String]