Add starbound server

pkgs/starbound/default.nix

@@ -0,0 +1,34 @@
+{
+  stdenv,
+  lib,
+  makeWrapper,
+  patchelf,
+  steamPackages,
+  replace-secret,
+}: let
+  # Use the directory in which starbound is installed so steamcmd
+  # doesn't have to be reinstalled constantly (we're using DynamicUser
+  # with StateDirectory to persist this).
+  steamcmd = steamPackages.steamcmd.override {
+    steamRoot = "/var/lib/starbound/.steamcmd";
+  };
+  wrapperPath = lib.makeBinPath [patchelf steamcmd replace-secret];
+in
+  stdenv.mkDerivation {
+    name = "starbound-update-script";
+    nativeBuildInputs = [makeWrapper];
+    dontUnpack = true;
+    patchPhase = ''
+      interpreter="$(cat $NIX_CC/nix-support/dynamic-linker)"
+      substitute ${./launch-starbound.sh} launch-starbound --subst-var interpreter
+    '';
+    installPhase = ''
+      mkdir -p $out/bin
+      cp launch-starbound $out/bin/launch-starbound
+      chmod +x $out/bin/launch-starbound
+    '';
+    postFixup = ''
+      wrapProgram $out/bin/launch-starbound \
+          --prefix PATH : "${wrapperPath}"
+    '';
+  }