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/monitoring/grafana/update.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl common-updater-scripts jq nix nix-prefetch-scripts moreutils
+
+set -euxo pipefail
+
+FILE="$(nix-instantiate --eval -E 'with import ./. {}; (builtins.unsafeGetAttrPos "version" grafana).file' | tr -d '"')"
+replaceHash() {
+  old="${1?old hash missing}"
+  new="${2?new hash missing}"
+  awk -v OLD="$old" -v NEW="$new" '{
+    if (i=index($0, OLD)) {
+      $0 = substr($0, 1, i-1) NEW substr($0, i+length(OLD));
+    }
+    print $0;
+  }' "$FILE" | sponge "$FILE"
+}
+extractVendorHash() {
+  original="${1?original hash missing}"
+  result="$(nix-build -A grafana.go-modules 2>&1 | tail -n3 | grep 'got:' | cut -d: -f2- | xargs echo || true)"
+  [ -z "$result" ] && { echo "$original"; } || { echo "$result"; }
+}
+
+oldVersion="$(nix-instantiate --eval -E "with import ./. {}; lib.getVersion grafana" | tr -d '"')"
+latest="$(curl https://api.github.com/repos/grafana/grafana/releases/latest | jq '.tag_name' -r | tr -d 'v')"
+
+targetVersion="${1:-$latest}"
+if [ ! "${oldVersion}" = "${targetVersion}" ]; then
+  update-source-version grafana "${targetVersion#v}"
+  oldStaticHash="$(nix-instantiate --eval -A grafana.srcStatic.outputHash | tr -d '"')"
+  newStaticHash="$(nix-prefetch-url "https://dl.grafana.com/oss/release/grafana-${targetVersion#v}.linux-amd64.tar.gz")"
+  replaceHash "$oldStaticHash" "$newStaticHash"
+  goHash="$(nix-instantiate --eval -A grafana.vendorSha256 | tr -d '"')"
+  emptyHash="$(nix-instantiate --eval -A lib.fakeSha256 | tr -d '"')"
+  replaceHash "$goHash" "$emptyHash"
+  replaceHash "$emptyHash" "$(extractVendorHash "$goHash")"
+  nix-build -A grafana
+else
+  echo "grafana is already up-to-date"
+fi