haskell-splot: add version 0.3.4

pkgs/development/tools/haskell/splot/default.nix

@@ -0,0 +1,21 @@
+{ cabal, bytestringLexing, cairo, Chart, colour, HUnit, mtl
+, strptime, time, vcsRevision
+}:
+
+cabal.mkDerivation (self: {
+  pname = "splot";
+  version = "0.3.4";
+  sha256 = "1qfi8vqm4zliz0lmi6njicm8xha6w8w55il09k0d1w5akwi93x5j";
+  isLibrary = false;
+  isExecutable = true;
+  buildDepends = [
+    bytestringLexing cairo Chart colour HUnit mtl strptime time
+    vcsRevision
+  ];
+  meta = {
+    homepage = "http://www.haskell.org/haskellwiki/Splot";
+    description = "A tool for visualizing the lifecycle of many concurrent multi-staged processes";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})

pkgs/top-level/haskell-packages.nix

@@ -1835,6 +1835,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   myhasktags = callPackage ../tools/misc/myhasktags {};
 
+  splot = callPackage ../development/tools/haskell/splot {};
+
   timeplot = callPackage ../development/tools/haskell/timeplot {};
 
   # Games.