cryptol: update 2.x branch to version 2.1.0 and remove broken 1.x build

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

@@ -376,9 +376,9 @@ self: super: {
   # https://github.com/rrnewton/haskell-lockfree/issues/44
   chaselev-deque = markBrokenVersion "0.5.0.3" super.chaselev-deque;
 
-}
-// {
-  # Not on Hackage yet.
+} // {
+
+  # Not on Hackage.
   cabal2nix = self.mkDerivation {
     pname = "cabal2nix";
     version = "2.0";

pkgs/development/haskell-modules/configuration-ghc-7.6.x.nix

@@ -63,4 +63,30 @@ self: super: {
   # Choose appropriate flags for our version of 'bytestring'.
   bytestring-builder = disableCabalFlag super.bytestring-builder "bytestring_has_builder";
 
+} // {
+
+  # Not on Hackage.
+  cryptol = self.mkDerivation rec {
+    pname = "cryptol";
+    version = "2.1.0";
+    src = pkgs.fetchFromGitHub {
+      owner = "GaloisInc";
+      repo = "cryptol";
+      rev = "v${version}";
+      sha256 = "00bmad3qc7h47j26xp7hbrlb0qv0f7k9spxgsc1f6lsmpgq9axr3";
+    };
+    isLibrary = true;
+    isExecutable = true;
+    buildDepends = with self; [
+      ansi-terminal array async base containers deepseq directory
+      executable-path filepath GraphSCC haskeline monadLib mtl old-time
+      presburger pretty process QuickCheck random smtLib syb text
+      tf-random transformers utf8-string
+    ];
+    buildTools = with self; [ alex happy Cabal_1_22_0_0 ];
+    patchPhase = "sed -i -e 's|process .*,|process,|' cryptol.cabal";
+    description = "Cryptol: The Language of Cryptography";
+    license = pkgs.stdenv.lib.licenses.bsd3;
+  };
+
 }