diff --git a/configuration.nix b/configuration.nix
index 68ad0a8..b011928 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -10,6 +10,41 @@
     agenix.packages.aarch64-darwin.default
     iterm2
     tailscale
+    (pkgs.writeShellScriptBin "portalpatch" ''
+      #!/usr/bin/env bash
+      # Automatically patch the game Portal for use on Apple Silicon using the
+      # hl2 source leak
+      #
+      # Instructions adapted from the Apple Gaming Wiki
+      # https://www.applegamingwiki.com/wiki/Half-Life_2#Native
+      #
+      # Note that this script **does not** download the dependencies from
+      # Homebrew: that is assumed to be handled by nix-darwin
+      HL2_SOURCE_DIR=$(mktemp -d)
+      HL2_DEST_DIR=$(mktemp -d)
+
+      git clone --recursive https://github.com/nillerusr/source-engine "$HL2_SOURCE_DIR"
+      cd "$HL2_SOURCE_DIR" || exit 1
+
+      export PKG_CONFIG_PATH="/opt/homebrew/opt/jpeg/lib/pkgconfig"
+
+      python3 waf configure -T release --prefix="" --build-games=portal && \
+      python3 waf build && \
+      python3 waf install --destdir "$HL2_DEST_DIR"
+
+      PORTAL_GAME_DIR="$HOME/Library/Application Support/Steam/steamapps/common/Portal"
+      mv "$PORTAL_GAME_DIR/bin" "$PORTAL_GAME_DIR/bin.bak"
+      mv "$PORTAL_GAME_DIR/portal/bin" "$PORTAL_GAME_DIR/portal/bin.bak"
+      mv "$PORTAL_GAME_DIR/hl2_osx" "$PORTAL_GAME_DIR/hl2_osx.bak"
+
+      cp -r "$HL2_DEST_DIR/bin" "$PORTAL_GAME_DIR/bin"
+      cp -r "$HL2_DEST_DIR/portal/bin" "$PORTAL_GAME_DIR/portal/bin"
+      cp -r "$HL2_DEST_DIR/hl2_launcher" "$PORTAL_GAME_DIR/hl2_osx"
+
+      cp "$PORTAL_GAME_DIR/steam_appid.txt" "$PORTAL_GAME_DIR/hl2/steam_appid.txt"
+
+      cd -1 || exit 1
+    '')
   ];
 
   # Use a custom configuration.nix location.
@@ -49,7 +84,34 @@
       no_quarantine = true;
 
     };
-    brews = [ "borgbackup/tap/borgbackup-fuse" "firefoxpwa" "r" ];
+    taps = [
+      "homebrew/services"
+      "ybeapps/sourcegit"
+      {
+        name = "millironx/millironx";
+        clone_target =
+          "https://code.millironx.com/millironx/homebrew-millironx.git";
+      }
+    ];
+    brews = [
+      "borgbackup/tap/borgbackup-fuse"
+      {
+        name = "colima";
+        restart_service = true;
+      }
+      "docker"
+      "firefoxpwa"
+      "r"
+
+      # Portal built via hl2 source leak dependencies
+      "sdl2"
+      "freetype2"
+      "fontconfig"
+      "pkg-config"
+      "opus"
+      "libpng"
+      "libedit"
+    ];
     casks = [
       "alt-tab"
       "anki"
@@ -59,17 +121,19 @@
       "firefox"
       "freetube"
       "inkscape"
+      "kdeconnect@nightly"
       "logseq"
       "macfuse"
       "musescore"
       "nextcloud"
       "obs"
+      "ollama"
       "openrct2"
       "porting-kit"
       "qownnotes"
-      "rancher"
       "rstudio"
       "signal"
+      "stats"
       "steam"
       "textmate"
       "thunderbird@esr"
@@ -82,6 +146,7 @@
     ];
     masApps = {
       "Bitwarden" = 1352778147;
+      "Hidden Bar" = 1452453066;
       "Tailscale" = 1475387142;
     };
   };