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/tools/nix/nix-output-monitor/update.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p cabal2nix curl jq alejandra
+#
+# This script will update the nix-output-monitor derivation to the latest version using
+# cabal2nix.
+
+set -eo pipefail
+
+# This is the directory of this update.sh script.
+script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+derivation_file="${script_dir}/generated-package.nix"
+
+# This is the latest released version of nix-output-monitor on GitHub.
+new_version=$(curl --silent "https://api.github.com/repos/maralorn/nix-output-monitor/releases" | jq '.[0].tag_name' --raw-output)
+
+echo "Updating nix-output-monitor to version $new_version."
+echo "Running cabal2nix and outputting to ${derivation_file}..."
+
+cat > "$derivation_file" << EOF
+# This file has been autogenerate with cabal2nix.
+# Update via ./update.sh"
+EOF
+
+cabal2nix \
+  --maintainer maralorn \
+  "https://github.com/maralorn/nix-output-monitor/archive/refs/tags/${new_version}.tar.gz" \
+  >> "$derivation_file"
+
+alejandra "${derivation_file}" | cat
+
+echo "Finished."