niff: init at 0.1

pkgs/tools/package-management/niff/default.nix

@@ -0,0 +1,34 @@
+{ stdenv
+, python3
+, fetchFromGitHub
+}:
+
+let
+  pname = "niff";
+  version = "0.1";
+in stdenv.mkDerivation {
+  name = "${pname}-${version}";
+
+  src = fetchFromGitHub {
+    owner = "FRidh";
+    repo = "niff";
+    rev = "v${version}";
+    sha256 = "1ziv5r57jzg2qg61izvkkyq1bz4p5nb6652dzwykfj3l2r3db4bi";
+  };
+
+  buildInputs = [ python3 ];
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp niff $out/bin/niff
+  '';
+
+  meta = {
+    description = "A program that compares two Nix expressions and determines which attributes changed";
+    homepage = https://github.com/FRidh/niff;
+    license = stdenv.lib.licenses.mit;
+    maintainers = [ stdenv.lib.maintainers.fridh ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3501,6 +3501,8 @@ with pkgs;
     wxGTK = wxGTK30;
   };
 
+  niff = callPackage ../tools/package-management/niff { };
+
   nifskope = callPackage ../tools/graphics/nifskope { };
 
   nilfs-utils = callPackage ../tools/filesystems/nilfs-utils {};