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/virtualization/virtualbox/update.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl common-updater-scripts nix-prefetch-scripts jq
+
+set -xeuo pipefail
+
+nixpkgs="$(git rev-parse --show-toplevel)"
+
+attr=virtualbox
+oldVersion="$(nix-instantiate --eval -E "with import $nixpkgs {}; $attr.version or (builtins.parseDrvName $attr.name).version" | tr -d '"')"
+latestVersion="$(curl -sS https://download.virtualbox.org/virtualbox/LATEST.TXT)"
+
+function fileShaSum() {
+  echo "$1" | grep -w $2 | cut -f1 -d' '
+}
+function oldHash() {
+  nix-instantiate --eval --strict -A "$1.drvAttrs.outputHash" | tr -d '"'
+}
+function nixFile() {
+  nix-instantiate --eval --strict -A "${1}.meta.position" | sed -re 's/^"(.*):[0-9]+"$/\1/'
+}
+
+if [ ! "$oldVersion" = "$latestVersion" ]; then
+  shaSums=$(curl -sS https://download.virtualbox.org/virtualbox/$latestVersion/SHA256SUMS)
+
+  virtualBoxShaSum=$(fileShaSum "$shaSums" "VirtualBox-$latestVersion.tar.bz2")
+  extpackShaSum=$(fileShaSum "$shaSums" "Oracle_VM_VirtualBox_Extension_Pack-$latestVersion.vbox-extpack")
+  guestAdditionsShaSum=$(fileShaSum "$shaSums" "*VBoxGuestAdditions_$latestVersion.iso")
+
+  virtualboxNixFile=$(nixFile ${attr})
+  extpackNixFile=$(nixFile ${attr}Extpack)
+  guestAdditionsNixFile=$(nixFile linuxPackages.${attr}GuestAdditions)
+
+  extpackOldShaSum=$(oldHash ${attr}Extpack)
+  guestAdditionsOldShaSum=$(oldHash linuxPackages.${attr}GuestAdditions.src)
+
+  update-source-version $attr $latestVersion $virtualBoxShaSum
+  sed -i -e 's|value = "'$extpackOldShaSum'"|value = "'$extpackShaSum'"|' $extpackNixFile
+  sed -i -e 's|sha256 = "'$guestAdditionsOldShaSum'"|sha256 = "'$guestAdditionsShaSum'"|' $guestAdditionsNixFile
+
+  git add $virtualboxNixFile $extpackNixFile $guestAdditionsNixFile
+  git commit -m "$attr: ${oldVersion} -> ${latestVersion}"
+else
+  echo "$attr is already up-to-date"
+fi