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/browsers/firefox/update.nix

@@ -0,0 +1,47 @@
+{ writeScript
+, lib
+, xidel
+, common-updater-scripts
+, coreutils
+, gnused
+, gnugrep
+, curl
+, gnupg
+, attrPath
+, runtimeShell
+, baseUrl ? "http://archive.mozilla.org/pub/firefox/releases/"
+, versionSuffix ? ""
+, versionKey ? "version"
+}:
+
+writeScript "update-${attrPath}" ''
+  #!${runtimeShell}
+  PATH=${lib.makeBinPath [ common-updater-scripts coreutils curl gnugrep gnupg gnused xidel ]}
+
+  set -eux
+  HOME=`mktemp -d`
+  export GNUPGHOME=`mktemp -d`
+  gpg --receive-keys 14F26682D0916CDD81E37B6D61B7B526D98F0353
+
+  url=${baseUrl}
+
+  # retriving latest released version
+  #  - extracts all links from the $url
+  #  - extracts lines only with number and dots followed by a slash
+  #  - removes trailing slash
+  #  - sorts everything with semver in mind
+  #  - picks up latest release
+  version=`xidel -s $url --extract "//a" | \
+           grep "^[0-9.]*${versionSuffix}/$" | \
+           sed s/[/]$// | \
+           sort --version-sort | \
+           tail -n 1`
+
+  curl --silent --show-error -o "$HOME"/shasums "$url$version/SHA512SUMS"
+  curl --silent --show-error -o "$HOME"/shasums.asc "$url$version/SHA512SUMS.asc"
+  gpgv --keyring="$GNUPGHOME"/pubring.kbx "$HOME"/shasums.asc "$HOME"/shasums
+
+  hash=$(grep '\.source\.tar\.xz$' "$HOME"/shasums | grep '^[^ ]*' -o)
+
+  update-source-version ${attrPath} "$version" "$hash" "" --version-key=${versionKey}
+''