haskell-doctest: use the latest version when compiling with GHC 8.4.x

This change also requires us to use the latest QuickCheck version in the GHC
8.4.x package set.

Furthermore, the latest version of doctest has a broken test suite that needs
to be disabled for the build to succeed.

pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix

@@ -42,6 +42,11 @@ self: super: {
   unix = null;
   xhtml = null;
 
+  # Use more recent doctest version to fix build errors.
+  doctest = self.doctest_0_14_0;
+  doctest_0_14_0 = dontCheck super.doctest_0_14_0; # https://github.com/sol/doctest/issues/189
+  QuickCheck = self.QuickCheck_2_11_3;             # needed by doctest-0.14.0
+
   # GHC 8.4.x needs newer versions than LTS-10.x offers by default.
   ## haddock: panic! (the 'impossible' happened)
   ##   (GHC version 8.4.20180122 for x86_64-unknown-linux):
@@ -82,14 +87,14 @@ self: super: {
   ## Shadowed:
 
   ## Needs bump to a versioned attribute
-  ## 
+  ##
   ##     • Could not deduce (Semigroup (Dict a))
   ##         arising from the superclasses of an instance declaration
   ##       from the context: a
   constraints = super.constraints_0_10;
 
   ## Needs bump to a versioned attribute
-  ## 
+  ##
   ##     • Could not deduce (Semigroup (IterT m a))
   ##         arising from the superclasses of an instance declaration
   ##       from the context: (Monad m, Monoid a)
@@ -97,7 +102,7 @@ self: super: {
 
   funcmp = overrideCabal super.funcmp_1_9 (drv: {
     ## Needs bump to a versioned attribute
-    ## 
+    ##
     ## Needed for (<>) in prelude
     ## Setup: Encountered missing dependencies:
     ## base >=3 && <4.11
@@ -106,7 +111,7 @@ self: super: {
 
   hspec-core = overrideCabal super.hspec-core_2_4_8 (drv: {
     ## Needs bump to a versioned attribute
-    ## 
+    ##
     ##     • No instance for (Semigroup Summary)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid Summary’
@@ -120,7 +125,7 @@ self: super: {
   });
 
   ## Needs bump to a versioned attribute
-  ## 
+  ##
   ## breaks hspec:
   ## Setup: Encountered missing dependencies:
   ## hspec-discover ==2.4.7
@@ -128,7 +133,7 @@ self: super: {
 
   lens = overrideCabal super.lens_4_16 (drv: {
     ## Needs bump to a versioned attribute
-    ## 
+    ##
     ##     • Could not deduce (Apply f)
     ##         arising from the superclasses of an instance declaration
     ##       from the context: (Contravariant f, Applicative f)
@@ -140,7 +145,7 @@ self: super: {
 
   semigroupoids = overrideCabal super.semigroupoids_5_2_2 (drv: {
     ## Needs bump to a versioned attribute
-    ## 
+    ##
     ##     • Variable not in scope: mappend :: Seq a -> Seq a -> Seq a
     ## Setup: Encountered missing dependencies:
     ## ghc >=7.0 && <8.4
@@ -149,14 +154,14 @@ self: super: {
   });
 
   ## Needs bump to a versioned attribute
-  ## 
+  ##
   ##     • No instance for (Semigroup Builder)
   ##         arising from the superclasses of an instance declaration
   ##     • In the instance declaration for ‘Monoid Builder’
   stringbuilder = super.stringbuilder_0_5_1;
 
   ## Needs bump to a versioned attribute
-  ## 
+  ##
   ##     Module ‘Data.Semigroup’ does not export ‘Monoid(..)’
   ##    |
   ## 80 | import Data.Semigroup (Semigroup(..), Monoid(..))
@@ -167,7 +172,7 @@ self: super: {
 
   tasty = overrideCabal super.tasty (drv: {
     ## On Hackage, awaiting for import
-    ## 
+    ##
     ##     • No instance for (Semigroup OptionSet)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid OptionSet’
@@ -180,7 +185,7 @@ self: super: {
 
   haskell-gi = overrideCabal super.haskell-gi (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## haskell-gi-base ==0.20.*
     src = pkgs.fetchFromGitHub {
@@ -197,7 +202,7 @@ self: super: {
 
   haskell-gi-base = overrideCabal super.haskell-gi-base (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## haskell-gi-base ==0.21.*
     ## cannot build derivation ‘/nix/store/b3d6yr1rzk4hpzg87yk4n5i4321i824f-gi-cairo-1.0.14.drv’: 1 dependencies couldn't be built
@@ -212,7 +217,7 @@ self: super: {
 
   haskell-src-exts = overrideCabal super.haskell-src-exts (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ##     • Could not deduce (Semigroup (ParseResult m))
     ##         arising from the superclasses of an instance declaration
     ##       from the context: Monoid m
@@ -226,7 +231,7 @@ self: super: {
 
   lambdacube-compiler = overrideCabal super.lambdacube-compiler (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## aeson >=0.9 && <0.12,
     ## base >=4.7 && <4.10,
@@ -243,7 +248,7 @@ self: super: {
 
   lambdacube-ir = overrideCabal super.lambdacube-ir (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## aeson >=0.9 && <0.12, base >=4.8 && <4.10, vector ==0.11.*
     src = pkgs.fetchFromGitHub {
@@ -257,7 +262,7 @@ self: super: {
 
   simple-reflect = overrideCabal super.simple-reflect (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ##     • No instance for (Semigroup Expr)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid Expr’
@@ -271,7 +276,7 @@ self: super: {
 
   singletons = overrideCabal super.singletons (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## th-desugar ==1.7.*
     src = pkgs.fetchFromGitHub {
@@ -284,7 +289,7 @@ self: super: {
 
   th-desugar = overrideCabal super.th-desugar (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ##     • Could not deduce (MonadIO (DsM q))
     ##         arising from the 'deriving' clause of a data type declaration
     ##       from the context: Quasi q
@@ -298,7 +303,7 @@ self: super: {
 
   websockets = overrideCabal super.websockets (drv: {
     ## Upstreamed, awaiting a Hackage release
-    ## 
+    ##
     ##     • No instance for (Semigroup SizeLimit)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid SizeLimit’
@@ -315,7 +320,7 @@ self: super: {
 
   blaze-builder = overrideCabal super.blaze-builder (drv: {
     ## Unmerged.  PR: https://github.com/lpsmith/blaze-builder/pull/10
-    ## 
+    ##
     ##     • No instance for (Semigroup Poke)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid Poke’
@@ -329,7 +334,7 @@ self: super: {
 
   bytestring-trie = overrideCabal super.bytestring-trie (drv: {
     ## Unmerged.  PR: https://github.com/wrengr/bytestring-trie/pull/3
-    ## 
+    ##
     ##     • Could not deduce (Semigroup (Trie a))
     ##         arising from the superclasses of an instance declaration
     ##       from the context: Monoid a
@@ -352,7 +357,7 @@ self: super: {
 
   gtk2hs-buildtools = overrideCabal super.gtk2hs-buildtools (drv: {
     ## Unmerged.  PR: https://github.com/gtk2hs/gtk2hs/pull/233
-    ## 
+    ##
     ## Setup: Encountered missing dependencies:
     ## Cabal >=1.24.0.0 && <2.1
     src = pkgs.fetchFromGitHub {
@@ -366,7 +371,7 @@ self: super: {
 
   hashtables = overrideCabal super.hashtables (drv: {
     ## Unmerged.  PR: https://github.com/gregorycollins/hashtables/pull/46
-    ## 
+    ##
     ##     • No instance for (Semigroup Slot)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid Slot’
@@ -380,7 +385,7 @@ self: super: {
 
   language-c = overrideCabal super.language-c (drv: {
     ## Unmerged.  PR: https://github.com/visq/language-c/pull/45
-    ## 
+    ##
     ##     Ambiguous occurrence ‘<>’
     ##     It could refer to either ‘Prelude.<>’,
     ##                              imported from ‘Prelude’ at src/Language/C/Pretty.hs:15:8-24
@@ -396,7 +401,7 @@ self: super: {
 
   language-c_0_7_0 = overrideCabal super.language-c_0_7_0 (drv: {
     ## Unmerged.  PR: https://github.com/visq/language-c/pull/45
-    ## 
+    ##
     ##     Ambiguous occurrence ‘<>’
     ##     It could refer to either ‘Prelude.<>’,
     ##                              imported from ‘Prelude’ at src/Language/C/Pretty.hs:15:8-24
@@ -412,7 +417,7 @@ self: super: {
 
   monadplus = overrideCabal super.monadplus (drv: {
     ## Unmerged.  PR: https://github.com/hanshoglund/monadplus/pull/3
-    ## 
+    ##
     ##     • No instance for (Semigroup (Partial a b))
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid (Partial a b)’
@@ -426,7 +431,7 @@ self: super: {
 
   reflex = overrideCabal super.reflex (drv: {
     ## Unmerged.  PR: https://github.com/reflex-frp/reflex/pull/158
-    ## 
+    ##
     ##     • Could not deduce (Semigroup (Event t a))
     ##         arising from the superclasses of an instance declaration
     ##       from the context: (Semigroup a, Reflex t)
@@ -454,7 +459,7 @@ self: super: {
 
   regex-tdfa = overrideCabal super.regex-tdfa (drv: {
     ## Unmerged.  PR: https://github.com/ChrisKuklewicz/regex-tdfa/pull/13
-    ## 
+    ##
     ##     • No instance for (Semigroup (CharMap a))
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid (CharMap a)’
@@ -468,7 +473,7 @@ self: super: {
 
   securemem = overrideCabal super.securemem (drv: {
     ## Unmerged.  PR: https://github.com/vincenthz/hs-securemem/pull/12
-    ## 
+    ##
     ##     • No instance for (Semigroup SecureMem)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid SecureMem’
@@ -482,7 +487,7 @@ self: super: {
 
   text-format = overrideCabal super.text-format (drv: {
     ## Unmerged.  PR: https://github.com/bos/text-format/pull/21
-    ## 
+    ##
     ##     • No instance for (Semigroup Format)
     ##         arising from the superclasses of an instance declaration
     ##     • In the instance declaration for ‘Monoid Format’
@@ -496,7 +501,7 @@ self: super: {
 
   wl-pprint-text = overrideCabal super.wl-pprint-text (drv: {
     ## Unmerged.  PR: https://github.com/ivan-m/wl-pprint-text/pull/17
-    ## 
+    ##
     ##     Ambiguous occurrence ‘<>’
     ##     It could refer to either ‘PP.<>’,
     ##                              imported from ‘Prelude.Compat’ at Text/PrettyPrint/Leijen/Text/Monadic.hs:73:1-36