pHash: init at 0.9.4 (#42546)

Fix style and redundancy issues pointed out by @jb55

maintainers/maintainer-list.nix

@@ -1722,6 +1722,11 @@
     github = "IvanMalison";
     name = "Ivan Malison";
   };
+  imalsogreg = {
+    email = "imalsogreg@gmail.com";
+    github = "imalsogreg";
+    name = "Greg Hale";
+  };
   infinisil = {
     email = "infinisil@icloud.com";
     github = "infinisil";

pkgs/development/libraries/phash/default.nix

@@ -0,0 +1,38 @@
+{ stdenv, fetchFromGitHub, pkgconfig, cimg, imagemagick }:
+
+stdenv.mkDerivation rec {
+  name = "${pname}-${version}";
+  pname = "pHash";
+  version = "0.9.4";
+
+  buildInputs = [ cimg ];
+
+  # CImg.h calls to external binary `convert` from the `imagemagick` package
+  # at runtime
+  propagatedBuildInputs = [ imagemagick ];
+
+  nativeBuildInputs = [ pkgconfig ];
+
+  configureFlags = ["--enable-video-hash=no" "--enable-audio-hash=no"];
+  postInstall = ''
+    cp ${cimg}/include/CImg.h $out/include/
+  '';
+
+  src = fetchFromGitHub {
+    owner = "clearscene";
+    repo = "pHash";
+    rev = version;
+    sha256 = "0y4gknfkns5sssfaj0snyx29752my20xmxajg6xggijx0myabbv0";
+  };
+
+  meta = with stdenv.lib; {
+    inherit version;
+    description = "Compute the perceptual hash of an image";
+    license = licenses.gpl3;
+    maintainers = [maintainers.imalsogreg];
+    platforms = platforms.all;
+    homepage = http://www.phash.org;
+    downloadPage = "https://github.com/clearscene/pHash";
+    updateWalker = true;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -4078,6 +4078,8 @@ with pkgs;
 
   pasystray = callPackage ../tools/audio/pasystray { };
 
+  phash = callPackage ../development/libraries/phash { };
+
   pnmixer = callPackage ../tools/audio/pnmixer { };
 
   pulsemixer = callPackage ../tools/audio/pulsemixer { };