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/home-assistant/update.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -p nix -p jq -p curl -p bash -p git -p nix-update -i bash
+
+set -eux
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR"
+
+CURRENT_VERSION=$(nix-instantiate ../../.. --eval --strict -A home-assistant.version | tr -d '"')
+TARGET_VERSION=$(curl https://api.github.com/repos/home-assistant/core/releases/latest | jq -r '.name')
+MANIFEST=$(curl https://raw.githubusercontent.com/home-assistant/core/${TARGET_VERSION}/homeassistant/components/frontend/manifest.json)
+FRONTEND_VERSION=$(echo $MANIFEST | jq -r '.requirements[] | select(startswith("home-assistant-frontend")) | sub(".*==(?<vers>.*)"; .vers)')
+
+if [[ "$CURRENT_VERSION" == "$TARGET_VERSION" ]]; then
+    echo "home-assistant is up-to-date: ${CURRENT_VERSION}"
+    exit 0
+fi
+
+
+sed -i -e "s/version =.*/version = \"${TARGET_VERSION}\";/" \
+    component-packages.nix
+
+sed -i -e "s/hassVersion =.*/hassVersion = \"${TARGET_VERSION}\";/" \
+    default.nix
+
+(
+    # update the frontend before running parse-requirements, so it doesn't get shown as outdated
+    cd ../../..
+    nix-update --version "$FRONTEND_VERSION" home-assistant.python.pkgs.home-assistant-frontend
+)
+
+./parse-requirements.py
+
+read
+
+(
+    cd ../../..
+    nix-update --version "$TARGET_VERSION" --build home-assistant
+)
+
+#git add ./component-packages.nix ./default.nix ./frontend.nix
+#git commit -m "home-assistant: ${CURRENT_VERSION} -> ${TARGET_VERSION}"