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/mikutter/update.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bundler bundix curl jq common-updater-scripts
+# shellcheck shell=bash
+
+set -euo pipefail
+
+main() {
+    local currentVer="$1"
+    local scriptDir="$2"
+    local latestVer
+    local srcDir
+
+    if [[ -z "$UPDATE_NIX_ATTR_PATH" ]]; then
+        echo "[ERROR] Please run the following instead:" >&2
+        echo >&2
+        echo "    % nix-shell maintainers/scripts/update.nix --argstr path mikutter" >&2
+        exit 1
+    fi
+
+    latestVer="$(queryLatestVersion)"
+    if [[ "$currentVer" == "$latestVer" ]]; then
+        echo "[INFO] mikutter is already up to date" >&2
+        exit
+    fi
+
+    update-source-version "$UPDATE_NIX_ATTR_PATH" "$latestVer"
+
+    cd "$scriptDir"
+
+    rm -rf deps
+    mkdir deps
+    cd deps
+
+    srcDir="$(nix-build ../../../../../.. --no-out-link -A mikutter.src)"
+    tar xvf "$srcDir" --strip-components=1
+    find . -not -name Gemfile -exec rm {} \;
+    find . -type d -exec rmdir -p --ignore-fail-on-non-empty {} \; || true
+
+    bundle lock
+    bundix
+}
+
+queryLatestVersion() {
+    curl -sS 'https://mikutter.hachune.net/download.json?count=1' \
+        | jq -r '.[].version_string' \
+        | head -n1
+}
+
+main "$@"
+
+# vim:set ft=bash: