blockhash: init at 0.3 (#40737)

pkgs/tools/graphics/blockhash/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, fetchFromGitHub, python, pkgconfig, imagemagick }:
+
+stdenv.mkDerivation rec {
+  name = "blockhash-${version}";
+  version = "0.3";
+
+  src = fetchFromGitHub {
+    owner = "commonsmachinery";
+    repo = "blockhash";
+    rev = "v${version}";
+    sha256 = "15iwljpkykn2711jhls7cwkb23gk6iawlvvk4prl972wic2wlxcj";
+  };
+
+  nativeBuildInputs = [ python pkgconfig ];
+  buildInputs = [ imagemagick ];
+
+  configurePhase = "python waf configure --prefix=$out";
+  buildPhase = "python waf";
+  installPhase = "python waf install";
+
+  meta = with stdenv.lib; {
+    homepage = "http://blockhash.io/";
+    description = ''
+      This is a perceptual image hash calculation tool based on algorithm
+      descibed in Block Mean Value Based Image Perceptual Hashing by Bian Yang,
+      Fan Gu and Xiamu Niu.
+    '';
+    license = licenses.mit;
+    maintainers = [ maintainers.infinisil ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -844,6 +844,8 @@ with pkgs;
 
   blink = callPackage ../applications/networking/instant-messengers/blink { };
 
+  blockhash = callPackage ../tools/graphics/blockhash { };
+
   bluemix-cli = callPackage ../tools/admin/bluemix-cli { };
 
   libqmatrixclient = libsForQt5.callPackage ../development/libraries/libqmatrixclient { };