diffr: init at 0.1.2

Signed-off-by: David Wood <david@davidtw.co>

pkgs/tools/text/diffr/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchFromGitHub, rustPlatform, Security }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "diffr";
+  version = "v0.1.2";
+
+  # diffr's tests expect the diffr binary to be at `$CARGO_MANIFEST_DIR/target/debug/diffr`.
+  doCheck = false;
+
+  src = fetchFromGitHub {
+    owner = "mookid";
+    repo = pname;
+    rev = version;
+    sha256 = "1fpcyl4kc4djfl6a2jlj56xqra42334vygz8n7614zgjpyxz3zx2";
+  };
+
+  cargoSha256 = "1dddb3a547qnpm1vvrgffb3v9m8sh19hmhy0fg6xjqpm032lqx3v";
+
+  nativeBuildInputs = [];
+  buildInputs = (stdenv.lib.optional stdenv.isDarwin Security);
+
+  meta = with stdenv.lib; {
+    description = "Yet another diff highlighting tool";
+    homepage = https://github.com/mookid/diffr;
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ davidtwco ];
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -2630,6 +2630,10 @@ in
     jdk = jdk8;
   };
 
+  diffr = callPackage ../tools/text/diffr {
+    inherit (darwin.apple_sdk.frameworks) Security;
+  };
+
   diffstat = callPackage ../tools/text/diffstat { };
 
   diffutils = callPackage ../tools/text/diffutils { };