apngasm_2: init at 2.91

This is the original apngasm which has not been updated since 2017 but it has
diverged from its fork with support for LZMA and ZOPFLI compression and TGA
input.

pkgs/applications/graphics/apngasm/2.nix

···
+{ stdenv, fetchzip, libpng, zlib, zopfli }:
+
+stdenv.mkDerivation rec {
+  pname = "apngasm";
+  version = "2.91";
+
+  src = fetchzip {
+    url = "mirror://sourceforge/${pname}/${pname}-${version}-src.zip";
+    stripRoot = false;
+    sha256 = "0qhljqql159xkn1l83vz0q8wvzr7rjz4jnhiy0zn36pgvacg0zn1";
+  };
+
+  buildInputs = [ libpng zlib zopfli ];
+
+  postPatch = ''
+    rm -rf libpng zlib zopfli
+  '';
+
+  NIX_CFLAGS_LINK = "-lzopfli";
+
+  installPhase = ''
+    install -Dt $out/bin apngasm
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    description = "Create highly optimized Animated PNG files from PNG/TGA images";
+    homepage = "http://apngasm.sourceforge.net/";
+    license = licenses.zlib;
+    maintainers = with maintainers; [ orivej ];
+    platforms = platforms.linux;
+  };
+
+}

pkgs/top-level/all-packages.nix

···
   apache-directory-studio = callPackage ../applications/networking/apache-directory-studio {};
 
   apngasm = callPackage ../applications/graphics/apngasm {};
+  apngasm_2 = callPackage ../applications/graphics/apngasm/2.nix {};
 
   appeditor = callPackage ../applications/misc/appeditor { };