haskell-packages: made darcs compile with ghc 8.8

pkgs/development/haskell-modules/configuration-common.nix

@@ -45,6 +45,12 @@ self: super: {
   # Needs older QuickCheck version
   attoparsec-varword = dontCheck super.attoparsec-varword;
 
+  # http://bugs.darcs.net/issue2642
+  darcs = doJailbreak (appendPatches super.darcs [
+    ./patches/darcs-setup.patch
+    ./patches/darcs-2.14.2-Compile-against-GHC-8.8.patch
+  ]);
+
   # Tests are failing
   # https://github.com/bos/statistics/issues/123
   statistics = dontCheck super.statistics;
@@ -1505,9 +1511,6 @@ self: super: {
     polysemy = self.polysemy_1_3_0_0;
   };
 
-  # Fixed at head, but hasn't cut a release in awhile.
-  darcs = doJailbreak super.darcs;
-
   # Test suite requires running a database server. Testing is done upstream.
   hasql-pool = dontCheck super.hasql-pool;