Add SourceGraph: Haskell code analysis tool

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

@@ -0,0 +1,22 @@
+# This file was auto-generated by cabal2nix. Please do NOT edit manually!
+
+{ cabal, Cabal, fgl, filepath, Graphalyze, graphviz, haskellSrcExts
+, mtl, multiset, random
+}:
+
+cabal.mkDerivation (self: {
+  pname = "SourceGraph";
+  version = "0.7.0.6";
+  sha256 = "03psglm6xyqvcgnbimidafy51kwpipk5q6s8ip5vhjm2d5makkhm";
+  isLibrary = false;
+  isExecutable = true;
+  buildDepends = [
+    Cabal fgl filepath Graphalyze graphviz haskellSrcExts mtl multiset
+    random
+  ];
+  meta = {
+    description = "Static code analysis using graph-theoretic techniques";
+    license = "GPL";
+    platforms = self.ghc.meta.platforms;
+  };
+})

pkgs/top-level/haskell-packages.nix

@@ -2875,6 +2875,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   ShellCheck = callPackage ../development/tools/misc/ShellCheck { };
 
+  SourceGraph = callPackage ../development/tools/haskell/SourceGraph {};
+
   tar = callPackage ../development/libraries/haskell/tar {};
 
   threadscope = callPackage ../development/tools/haskell/threadscope {};