uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/audio/helvum/default.nix

@@ -0,0 +1,60 @@
+{ lib
+, clang
+, desktop-file-utils
+, fetchFromGitLab
+, fetchpatch
+, glib
+, gtk4
+, libclang
+, meson
+, ninja
+, pipewire
+, pkg-config
+, rustPlatform
+, stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "helvum";
+  version = "0.3.4";
+
+  src = fetchFromGitLab {
+    domain = "gitlab.freedesktop.org";
+    owner = "pipewire";
+    repo = pname;
+    rev = version;
+    sha256 = "0nhv6zw2zzxz2bg2zj32w1brywnm5lv6j3cvmmvwshc389z2k5x1";
+  };
+
+  cargoDeps = rustPlatform.fetchCargoTarball {
+    inherit src;
+    name = "${pname}-${version}";
+    hash = "sha256-EIHO9qVPIXgezfFOaarlTU0an762nFmX1ELbQuAZ7rY";
+  };
+
+  nativeBuildInputs = [
+    clang
+    meson
+    ninja
+    pkg-config
+    rustPlatform.cargoSetupHook
+    rustPlatform.rust.cargo
+    rustPlatform.rust.rustc
+    rustPlatform.bindgenHook
+  ];
+
+  buildInputs = [
+    desktop-file-utils
+    glib
+    gtk4
+    pipewire
+  ];
+
+  meta = with lib; {
+    description = "A GTK patchbay for pipewire";
+    homepage = "https://gitlab.freedesktop.org/pipewire/helvum";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ fufexan ];
+    platforms = platforms.linux;
+  };
+}