Add olympus(celeste mod tool)

pkgs/default.nix

@@ -3,4 +3,5 @@ final: prev: rec {
   sources = prev.callPackage (import ./_sources/generated.nix) { };
   # then, call packages with `final.callPackage`
   go-fold-if-err-nil = final.callPackage ./go-fold-if-err-nil.nix { };
+  olympus = final.callPackage ./olympus.nix { };
 }

pkgs/olympus.nix

@@ -0,0 +1,43 @@
+{ pkgs, makeDesktopItem }:
+let
+  olympus = pkgs.stdenv.mkDerivation rec {
+    pname = "olympus";
+    version = "2551";
+
+    # https://everestapi.github.io/
+    src = pkgs.fetchzip {
+      url = "https://dev.azure.com/EverestAPI/Olympus/_apis/build/builds/${version}/artifacts?artifactName=linux.main&$format=zip#linux.main.zip";
+      hash = "sha256-Iq/FjDwckbOKE7s3xud0OQrxxjGqL0ZR9MQIaLs54OU=";
+    };
+
+    buildInputs = [ pkgs.unzip ];
+    installPhase = ''
+      mkdir -p "$out/opt/olympus/"
+      mv dist.zip "$out/opt/olympus/" && cd "$out/opt/olympus/"
+
+      unzip dist.zip && rm dist.zip
+      mkdir $out && echo XDG_DATA_HOME=$out
+
+      echo y | XDG_DATA_HOME="$out/share/" bash install.sh
+      sed -i "/ldconfig/d" ./love && rm ./usr/lib/libSDL2-2.0.so.0
+      sed -i "s/Exec=.*/Exec=olympus %u/g" ../../share/applications/Olympus.desktop
+    '';
+  };
+in
+pkgs.buildFHSUserEnv {
+  name = "olympus";
+  runScript = "${olympus}/opt/olympus/olympus";
+  targetPkgs = pkgs: [
+    pkgs.freetype
+    pkgs.zlib
+    pkgs.SDL2
+    pkgs.curl
+    pkgs.libpulseaudio
+    pkgs.gtk3
+    pkgs.glib
+  ];
+
+  # https://github.com/EverestAPI/Olympus/blob/main/lib-linux/olympus.desktop
+  # https://stackoverflow.com/questions/8822097/how-to-replace-a-whole-line-with-sed
+  extraInstallCommands = ''cp -r "${olympus}/share/" $out'';
+}

profiles/game/default.nix

@@ -8,6 +8,7 @@
     mumble
     polymc
     (retroarch.override {cores = [libretro.snes9x]; })
+    olympus
     godot
   ];
 }