dex: init at 0.7

pkgs/tools/X11/dex/default.nix

···
+{ stdenv, fetchFromGitHub, python3 }:
+
+stdenv.mkDerivation rec {
+  program = "dex";
+  name = "${program}-${version}";
+  version = "0.7";
+
+  src = fetchFromGitHub {
+    owner = "jceb";
+    repo = program;
+    rev = "v${version}";
+    sha256 = "041ms01snalapapaniabr92d8iim1qrxian626nharjmp2rd69v5";
+  };
+
+  propagatedBuildInputs = [ python3 ];
+  makeFlags = [ "PREFIX=$(out)" "VERSION=$(version)" ];
+
+  meta = {
+    description = "A program to generate and execute DesktopEntry files of the Application type";
+    homepage = https://github.com/jceb/dex;
+    platforms = stdenv.lib.platforms.linux;
+  };
+}

pkgs/top-level/all-packages.nix

···
     gtk = gtk3;
   };
 
+  dex = callPackage ../tools/X11/dex { };
+
   ddccontrol = callPackage ../tools/misc/ddccontrol { };
 
   ddccontrol-db = callPackage ../data/misc/ddccontrol-db { };