[commit: ghc] ghc-8.6: Bump Cabal submodule to 2.4 (ff086cc)

[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/ff086cc10da176ca16a349969f0b8a049cc691ef/ghc

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

commit ff086cc10da176ca16a349969f0b8a049cc691ef
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Wed Aug 1 19:42:53 2018 -0400

    Bump Cabal submodule to 2.4


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

ff086cc10da176ca16a349969f0b8a049cc691ef
 libraries/Cabal                                         | 2 +-
 testsuite/tests/driver/T4437.hs                         | 4 +---
 utils/check-api-annotations/check-api-annotations.cabal | 2 +-
 utils/check-ppr/check-ppr.cabal                         | 2 +-
 utils/ghc-cabal/ghc-cabal.cabal                         | 2 +-
 utils/ghctags/ghctags.cabal                             | 2 +-
 6 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index 8fbacca..8828258 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit 8fbacca029f3ad764576aefb610a0408c4b6aaad
+Subproject commit 8828258813f726150cd748433a8ad0df3310c6bc
diff --git a/testsuite/tests/driver/T4437.hs b/testsuite/tests/driver/T4437.hs
index a75990e..2818851 100644
--- a/testsuite/tests/driver/T4437.hs
+++ b/testsuite/tests/driver/T4437.hs
@@ -41,9 +41,7 @@ expectedGhcOnlyExtensions = ["RelaxedLayout",
                              "AlternativeLayoutRuleTransitional",
                              "DerivingVia",
                              "EmptyDataDeriving",
-                             "GeneralisedNewtypeDeriving",
-                             "StarIsType", -- FIXME: add StarIsType to cabal
-                             "QuantifiedConstraints"]
+                             "GeneralisedNewtypeDeriving"]
 
 expectedCabalOnlyExtensions :: [String]
 expectedCabalOnlyExtensions = ["Generics",
diff --git a/utils/check-api-annotations/check-api-annotations.cabal b/utils/check-api-annotations/check-api-annotations.cabal
index 3a014a6..5007625 100644
--- a/utils/check-api-annotations/check-api-annotations.cabal
+++ b/utils/check-api-annotations/check-api-annotations.cabal
@@ -24,6 +24,6 @@ Executable check-api-annotations
 
     Build-Depends: base       >= 4   && < 5,
                    containers,
-                   Cabal      >= 2.3 && < 2.4,
+                   Cabal      >= 2.4 && < 2.5,
                    directory,
                    ghc
diff --git a/utils/check-ppr/check-ppr.cabal b/utils/check-ppr/check-ppr.cabal
index e0d8b9d..2da21d7 100644
--- a/utils/check-ppr/check-ppr.cabal
+++ b/utils/check-ppr/check-ppr.cabal
@@ -25,7 +25,7 @@ Executable check-ppr
     Build-Depends: base       >= 4   && < 5,
                    bytestring,
                    containers,
-                   Cabal      >= 2.3 && < 2.4,
+                   Cabal      >= 2.4 && < 2.5,
                    directory,
                    filepath,
                    ghc
diff --git a/utils/ghc-cabal/ghc-cabal.cabal b/utils/ghc-cabal/ghc-cabal.cabal
index cc0d98d..baa7a17 100644
--- a/utils/ghc-cabal/ghc-cabal.cabal
+++ b/utils/ghc-cabal/ghc-cabal.cabal
@@ -21,7 +21,7 @@ Executable ghc-cabal
 
     Build-Depends: base       >= 3   && < 5,
                    bytestring >= 0.10 && < 0.11,
-                   Cabal      >= 2.3 && < 2.4,
+                   Cabal      >= 2.4 && < 2.5,
                    directory  >= 1.1 && < 1.4,
                    filepath   >= 1.2 && < 1.5
 
diff --git a/utils/ghctags/ghctags.cabal b/utils/ghctags/ghctags.cabal
index 391eb7a..f74bc4f 100644
--- a/utils/ghctags/ghctags.cabal
+++ b/utils/ghctags/ghctags.cabal
@@ -18,6 +18,6 @@ Executable ghctags
 
     Build-Depends: base       >= 4   && < 5,
                    containers,
-                   Cabal      >= 2.3 && <2.4,
+                   Cabal      >= 2.4 && <2.5,
                    ghc