pkgs/factorio-launcher: Add wrapper to launch factorio

pkgs/factorio-launcher/default.nix

@@ -0,0 +1,25 @@
+{ pkgs, lib, ... }:
+
+pkgs.buildFHSEnv {
+  name = "factorio-launcher";
+  targetPkgs = pkgs: (with pkgs; [
+        alsa-lib
+        libGL
+        libpulseaudio
+        libxkbcommon
+        wayland
+  ]) ++ (with pkgs.xorg; [
+        libICE
+        libSM
+        libX11
+        libXcursor
+        libXext
+        libXi
+        libXinerama
+        libXrandr
+  ]);
+  runScript = lib.getExe (pkgs.writeShellApplication {
+    name = "launch-factorio";
+    text = builtins.readFile ./launch-factorio.sh;
+  });
+}

pkgs/factorio-launcher/launch-factorio.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [[ $# -eq 0 ]]; then
+	echo "Pass path to factorio install directory as first argument"
+	exit 1
+fi
+
+FACTORIO_BINARY_PATH=""
+
+for suffix in "" "/factorio" "/x64/factorio" "/bin/x64/factorio" "/factorio/bin/x64/factorio"; do
+	if [[ -f "$1${suffix}" && -x "$1${suffix}" ]]; then
+		FACTORIO_BINARY_PATH="$1${suffix}"
+		break
+	fi
+done
+
+if [[ -z $FACTORIO_BINARY_PATH ]]; then
+	echo "No factorio executable found below $1"
+	exit 1
+fi
+
+shift
+
+set -- "${FACTORIO_BINARY_PATH}" "$@"
+
+exec "$@"