Remove more things

Author: zlonast

Cabal-syntax/Cabal-syntax.cabal

@@ -52,9 +52,8 @@ library
     -Wincomplete-uni-patterns
     -Wincomplete-record-updates
     -Wno-unticked-promoted-constructors
-
-  if impl(ghc >= 8.0)
-    ghc-options: -Wcompat -Wnoncanonical-monad-instances
+    -Wcompat
+    -Wnoncanonical-monad-instances
 
   if impl(ghc >= 8.0) && impl(ghc < 8.8)
     ghc-options: -Wnoncanonical-monadfail-instances

Cabal-tests/Cabal-tests.cabal

@@ -194,9 +194,4 @@ test-suite no-thunks-test
     , Cabal-syntax
     , tasty        >=1.2.3 && <1.6
     , tasty-hunit
-
-  -- this is test is buildable on old GHCs
-  -- but it doesn't do anything.
-  if impl(ghc >=8.6)
-    build-depends:
-      , nothunks >=0.1.1.0 && <0.3
+    , nothunks >=0.1.1.0 && <0.3

Cabal-tests/tests/ParserTests/regressions/generics-sop.cabal

@@ -69,11 +69,6 @@ library
                        template-haskell     >= 2.8  && < 2.13,
                        ghc-prim             >= 0.3  && < 0.6,
                        deepseq              >= 1.3  && < 1.5
-  if !impl (ghc >= 7.8)
-    build-depends:     tagged               >= 0.7  && < 0.9
-  if !impl (ghc >= 8.0)
-    build-depends:     transformers-compat  >= 0.3  && < 0.6,
-                       transformers         >= 0.3  && < 0.6
 
   hs-source-dirs:      src
   default-language:    Haskell2010
@@ -96,16 +91,13 @@ library
                        KindSignatures
                        DataKinds
                        FunctionalDependencies
-  if impl (ghc >= 7.8)
-    default-extensions:  AutoDeriveTypeable
+                       AutoDeriveTypeable
   other-extensions:    OverloadedStrings
                        PolyKinds
                        UndecidableInstances
                        TemplateHaskell
                        DeriveGeneric
                        StandaloneDeriving
-  if impl (ghc < 7.10)
-    other-extensions:    OverlappingInstances
 
 test-suite doctests
   type:                exitcode-stdio-1.0