ci: use custom uhubctl package

Simply bumping the nixpkgs unstable version causes python test to fail:
https://gitlab.com/satoshilabs/trezor/trezor-firmware/-/jobs/1008507521

Until that's resolved we can stay on the current nixpkgs version and use
our own copy of the uhubctl nix expression.

ci/hardware_tests/shell.nix

@@ -3,7 +3,7 @@ with import ../nixpkgs.nix;
 stdenv.mkDerivation rec {
   name = "trezor-firmware-hardware-tests";
   buildInputs = [
-    uhubctl
+    (callPackage ./uhubctl.nix { }) # HACK FIXME replace this with just uhubctl once pinned version of nixpkgs is updated
     ffmpeg
     poetry
     libusb1

ci/hardware_tests/uhubctl.nix

@@ -0,0 +1,27 @@
+{ lib, stdenv
+, fetchFromGitHub
+, libusb1
+}:
+
+stdenv.mkDerivation rec {
+  pname = "uhubctl";
+  version = "2.3.0";
+
+  src = fetchFromGitHub {
+    owner = "mvp";
+    repo = "uhubctl";
+    rev = "refs/tags/v${version}";
+    sha256 = "1wxsiygw6gwv1h90yassnxylkyi2dfz7y59qkmb7rs8a8javj7nv";
+  };
+
+  buildInputs = [ libusb1 ];
+
+  installFlags = [ "prefix=${placeholder "out"}" ];
+  meta = with lib; {
+    homepage = "https://github.com/mvp/uhubctl";
+    description = "Utility to control USB power per-port on smart USB hubs";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ prusnak ];
+    platforms = with platforms; linux ++ darwin;
+  };
+}