ejabberd: add updateScript

pkgs/by-name/ej/ejabberd/package.nix

@@ -73,7 +73,6 @@ let
   };
 
   allBeamDeps = import ./rebar-deps.nix {
-    # TODO(@chuangzhu) add updateScript
     inherit fetchHex fetchgit fetchFromGitHub;
     builder = lib.makeOverridable beamPackages.buildRebar3;
 
@@ -211,6 +210,8 @@ stdenv.mkDerivation (finalAttrs:{
     }"''}
   '';
 
+  passthru.updateScript = ./update.sh;
+
   meta = {
     description = "Open-source XMPP application server written in Erlang";
     mainProgram = "ejabberdctl";

pkgs/by-name/ej/ejabberd/update.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -I nixpkgs=./. -i bash -p curl jq common-updater-scripts "rebar3WithPlugins {globalPlugins = [beamPackages.rebar3-nix];}" erlang autoconf automake nixfmt-rfc-style
+#shellcheck shell=bash
+
+set -eu -o pipefail
+
+version=$(curl -s ${GITHUB_TOKEN:+-u ":$GITHUB_TOKEN"} \
+    https://api.github.com/repos/processone/ejabberd/releases/latest | jq -e -r .tag_name)
+old_version=$(nix-instantiate --eval -A ejabberd.version | jq -e -r)
+
+if [[ $version == "$old_version" ]]; then
+    echo "New version same as old version, nothing to do." >&2
+    exit 0
+fi
+
+update-source-version ejabberd "$version"
+
+sqlite=$(nix-build . -A sqlite.dev --no-link)
+rebardeps=$(dirname -- "$(readlink -f -- "${BASH_SOURCE[0]}")")/rebar-deps.nix
+tmpdir=$(mktemp -d)
+cp -r $(nix-build . --no-out-link -A ejabberd.src)/. "$tmpdir"
+cd "$tmpdir"
+
+./autogen.sh
+./configure --enable-all --disable-elixir --with-sqlite3=$sqlite
+HOME=. rebar3 nix lock -o "$rebardeps"
+nixfmt "$rebardeps"