misc changes and add tlauncher

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

overlays/tlauncher/default.nix

@@ -0,0 +1,72 @@
+{ stdenv
+, openjdk8
+, buildFHSUserEnv
+, fetchzip
+}:
+
+let
+  version = "2.86";
+  jar = stdenv.mkDerivation {
+    pname = "tlauncher-jar";
+    inherit version;
+    src = fetchzip {
+      name = "tlauncher.zip";
+      url = "https://dl2.tlauncher.org/f.php?f=files%2FTLauncher-${version}.zip";
+      sha256 = "sha256-Tpia/GtPfeO8/Tca0fE7z387FRpkXfS1CtvX/oNJDag=";
+      stripRoot = false;
+    };
+    installPhase = ''
+      cp $src/*.jar $out
+    '';
+  };
+  fhs = buildFHSUserEnv {
+    name = "tlauncher";
+    runScript = ''
+      ${openjdk8}/bin/java -jar "${jar}" "$@"
+    '';
+    targetPkgs = pkgs: with pkgs; [
+      zip
+      zlib
+      alsa-lib
+      cpio
+      cups
+      file
+      fontconfig
+      freetype
+      giflib
+      glib
+      gnome2.GConf
+      gnome2.gnome_vfs
+      gtk2
+      libjpeg
+      libGL
+      openjdk8-bootstrap
+      perl
+      which
+    ] ++
+    (with xorg; [
+      libICE
+      libX11
+      libXcursor
+      libXext
+      libXi
+      libXinerama
+      libXrandr
+      xrandr
+      libXrender
+      libXt
+      libXtst
+      libXtst
+      libXxf86vm
+    ]);
+  };
+in
+stdenv.mkDerivation rec {
+  pname = "tlauncher";
+  inherit version;
+  dontUnpack = true;
+  installPhase = ''
+    mkdir $out/{bin,share/applications} -p
+    install ${fhs}/bin/tlauncher $out/bin
+  '';
+}