diff --git a/flake.nix b/flake.nix
index f556c99..8a3decb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -85,6 +85,8 @@
         neovim-nightly = neovim-nightly.overlays.default;
         jpassmenu = jpassmenu.overlays.default;
         audiomenu = audiomenu.overlays.default;
+        # Pin to v0.9 due to https://github.com/Alexays/Waybar/issues/3009
+        "waybar-0.9" = final: prev: { waybar = final.callPackage ./waybar.nix { }; };
       };
 
       # Nix files formatter (run `nix fmt`)
diff --git a/waybar.nix b/waybar.nix
new file mode 100644
index 0000000..dad61b8
--- /dev/null
+++ b/waybar.nix
@@ -0,0 +1,195 @@
+{ lib
+, stdenv
+, bash
+, fetchFromGitHub
+, SDL2
+, alsa-lib
+, catch2_3
+, fftw
+, glib
+, gobject-introspection
+, gtk-layer-shell
+, gtkmm3
+, howard-hinnant-date
+, hyprland
+, iniparser
+, jsoncpp
+, libdbusmenu-gtk3
+, libevdev
+, libinotify-kqueue
+, libinput
+, libjack2
+, libmpdclient
+, libnl
+, libpulseaudio
+, libsigcxx
+, libxkbcommon
+, meson
+, ncurses
+, ninja
+, pipewire
+, pkg-config
+, playerctl
+, portaudio
+, python3
+, scdoc
+, sndio
+, spdlog
+, sway
+, udev
+, upower
+, wayland
+, wireplumber
+, wrapGAppsHook
+
+, cavaSupport ? true
+, evdevSupport ? true
+, experimentalPatches ? true
+, hyprlandSupport ? true
+, inputSupport ? true
+, jackSupport ? true
+, mpdSupport ? true
+, mprisSupport ? stdenv.isLinux
+, nlSupport ? true
+, pulseSupport ? true
+, rfkillSupport ? true
+, runTests ? true
+, sndioSupport ? true
+, swaySupport ? true
+, traySupport ? true
+, udevSupport ? true
+, upowerSupport ? true
+, wireplumberSupport ? true
+, withMediaPlayer ? mprisSupport && false
+}:
+
+let
+  # Derived from subprojects/cava.wrap
+  libcava.src = fetchFromGitHub {
+    owner = "LukashonakV";
+    repo = "cava";
+    rev = "0.9.1";
+    hash = "sha256-FnRJJV0poRmw+y4nt1X7Z0ipX86LRK1TJhNKHFk0rTw=";
+  };
+in
+stdenv.mkDerivation (finalAttrs: {
+  pname = "waybar";
+  version = "0.9.24";
+
+  src = fetchFromGitHub {
+    owner = "Alexays";
+    repo = "Waybar";
+    rev = finalAttrs.version;
+    hash = "sha256-JhLKGzqZ8akWcyHTav2TGcGmXk9dy9Xj4+/oFCPeNU0=";
+  };
+
+  postUnpack = lib.optional cavaSupport ''
+    pushd "$sourceRoot"
+    cp -R --no-preserve=mode,ownership ${libcava.src} subprojects/cava-0.9.1
+    patchShebangs .
+    popd
+  '';
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    scdoc
+    wrapGAppsHook
+  ] ++ lib.optional withMediaPlayer gobject-introspection;
+
+  propagatedBuildInputs = lib.optionals withMediaPlayer [
+    glib
+    playerctl
+    python3.pkgs.pygobject3
+  ];
+
+  strictDeps = false;
+
+  buildInputs = [
+    gtk-layer-shell
+    gtkmm3
+    howard-hinnant-date
+    jsoncpp
+    libsigcxx
+    libxkbcommon
+    spdlog
+    wayland
+  ]
+  ++ lib.optionals cavaSupport [
+    SDL2
+    alsa-lib
+    fftw
+    iniparser
+    ncurses
+    pipewire
+    portaudio
+  ]
+  ++ lib.optional evdevSupport libevdev
+  ++ lib.optional hyprlandSupport hyprland
+  ++ lib.optional inputSupport libinput
+  ++ lib.optional jackSupport libjack2
+  ++ lib.optional mpdSupport libmpdclient
+  ++ lib.optional mprisSupport playerctl
+  ++ lib.optional nlSupport libnl
+  ++ lib.optional pulseSupport libpulseaudio
+  ++ lib.optional sndioSupport sndio
+  ++ lib.optional swaySupport sway
+  ++ lib.optional traySupport libdbusmenu-gtk3
+  ++ lib.optional udevSupport udev
+  ++ lib.optional upowerSupport upower
+  ++ lib.optional wireplumberSupport wireplumber
+  ++ lib.optional (!stdenv.isLinux) libinotify-kqueue;
+
+  nativeCheckInputs = [ catch2_3 ];
+  doCheck = runTests;
+
+  mesonFlags = (lib.mapAttrsToList lib.mesonEnable {
+    "cava" = cavaSupport;
+    "dbusmenu-gtk" = traySupport;
+    "gtk-layer-shell" = true;
+    "jack" = jackSupport;
+    "libinput" = inputSupport;
+    "libnl" = nlSupport;
+    "libudev" = udevSupport;
+    "man-pages" = true;
+    "mpd" = mpdSupport;
+    "mpris" = mprisSupport;
+    "pulseaudio" = pulseSupport;
+    "rfkill" = rfkillSupport;
+    "sndio" = sndioSupport;
+    "systemd" = false;
+    "tests" = runTests;
+    "upower_glib" = upowerSupport;
+    "wireplumber" = wireplumberSupport;
+  }) ++ lib.optional experimentalPatches (lib.mesonBool "experimental" true);
+
+  postPatch = ''
+    substituteInPlace include/util/command.hpp \
+      --replace-fail /bin/sh ${lib.getExe' bash "sh"}
+  '';
+
+  preFixup = lib.optionalString withMediaPlayer ''
+    cp $src/resources/custom_modules/mediaplayer.py $out/bin/waybar-mediaplayer.py
+
+    wrapProgram $out/bin/waybar-mediaplayer.py \
+      --prefix PYTHONPATH : "$PYTHONPATH:$out/${python3.sitePackages}"
+  '';
+
+  meta = {
+    homepage = "https://github.com/alexays/waybar";
+    description = "Highly customizable Wayland bar for Sway and Wlroots based compositors";
+    changelog = "https://github.com/alexays/waybar/releases/tag/${finalAttrs.version}";
+    license = lib.licenses.mit;
+    mainProgram = "waybar";
+    maintainers = with lib.maintainers; [
+      FlorianFranzen
+      lovesegfault
+      minijackson
+      rodrgz
+      synthetica
+      khaneliman
+    ];
+    platforms = lib.platforms.linux;
+  };
+})