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/networking/instant-messengers/schildichat/update.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=../../../../../ -i bash -p nix wget prefetch-yarn-deps nix-prefetch-git jq
+
+if [[ "$#" -gt 2 || "$1" == -* ]]; then
+  echo "Regenerates packaging data for the SchildiChat packages."
+  echo "Usage: $0 [git revision or tag] [version string override]"
+  exit 1
+fi
+
+rev="$1"
+version="$2"
+
+set -euo pipefail
+
+if [ -z "$rev" ]; then
+  rev="$(wget -O- "https://api.github.com/repos/SchildiChat/schildichat-desktop/releases?per_page=1" | jq -r '.[0].tag_name')"
+fi
+
+if [ -z "$version" ]; then
+  # strip leading "v"
+  version="${rev#v}"
+fi
+
+src_data=$(nix-prefetch-git https://github.com/SchildiChat/schildichat-desktop --fetch-submodules --rev $rev)
+src=$(echo $src_data | jq -r .path)
+src_hash=$(echo $src_data | jq -r .sha256)
+
+web_yarn_hash=$(prefetch-yarn-deps $src/element-web/yarn.lock)
+desktop_yarn_hash=$(prefetch-yarn-deps $src/element-desktop/yarn.lock)
+js_sdk_yarn_hash=$(prefetch-yarn-deps $src/matrix-js-sdk/yarn.lock)
+react_sdk_yarn_hash=$(prefetch-yarn-deps $src/matrix-react-sdk/yarn.lock)
+
+cat > pin.json << EOF
+{
+  "version": "$version",
+  "rev": "$rev",
+  "srcHash": "$src_hash",
+  "webYarnHash": "$web_yarn_hash",
+  "jsSdkYarnHash": "$js_sdk_yarn_hash",
+  "reactSdkYarnHash": "$react_sdk_yarn_hash",
+  "desktopYarnHash": "$desktop_yarn_hash"
+}
+EOF