matrix-appservice-irc: add update script

pkgs/servers/matrix-synapse/matrix-appservice-irc/default.nix

@@ -20,6 +20,7 @@ ourNodePackages."${packageName}".override {
   '';
 
   passthru.tests.matrix-appservice-irc = nixosTests.matrix-appservice-irc;
+  passthru.updateScript = ./update.sh;
 
   meta = with lib; {
     description = "Node.js IRC bridge for Matrix";

pkgs/servers/matrix-synapse/matrix-appservice-irc/update.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p nodePackages.node2nix nodejs-12_x curl jq
+
+set -euo pipefail
+# cd to the folder containing this script
+cd "$(dirname "$0")"
+
+CURRENT_VERSION=$(nix eval --raw '(with import ../../../../. {}; matrix-appservice-irc.version)')
+TARGET_VERSION="$(curl https://api.github.com/repos/matrix-org/matrix-appservice-irc/releases/latest | jq -r ".tag_name")"
+
+if [[ "$CURRENT_VERSION" == "$TARGET_VERSION" ]]; then
+    echo "matrix-appservice-irc is up-to-date: ${CURRENT_VERSION}"
+    exit 0
+fi
+
+echo "matrix-appservice-irc: $CURRENT_VERSION -> $TARGET_VERSION"
+
+sed -i "s/#$CURRENT_VERSION/#$TARGET_VERSION/" package.json
+
+./generate-dependencies.sh
+
+# Apparently this is done by r-ryantm, so only uncomment for manual usage
+#git add ./package.json ./node-packages.nix
+#git commit -m "matrix-appservice-irc: ${CURRENT_VERSION} -> ${TARGET_VERSION}"