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/servers/matrix-appservice-discord/generate.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=../../../ -i bash -p wget yarn2nix
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates the Yarn dependency lock files for the matrix-appservice-discord package."
+  echo "Usage: $0 <git release tag>"
+  exit 1
+fi
+
+SRC_REPO="https://raw.githubusercontent.com/Half-Shot/matrix-appservice-discord/$1"
+
+wget "$SRC_REPO/package.json" -O package.json
+wget "$SRC_REPO/yarn.lock" -O yarn.lock
+yarn2nix --lockfile=yarn.lock > yarn-dependencies.nix
+rm yarn.lock