community/firefox-esr: add appid migration notice

community/firefox-esr/APKBUILD

@@ -5,13 +5,14 @@ pkgname=firefox-esr
 pkgver=102.2.0
 # Date of release, YY-MM-DD for metainfo file (see package())
 _releasedate=2022-08-23
-pkgrel=3
+pkgrel=4
 pkgdesc="Firefox web browser - Extended Support Release"
 url="https://www.mozilla.org/en-US/firefox/organizations/"
 # s390x and riscv64: blocked by rust and cargo
 # armhf: build failure on armhf due to wasm
 arch="x86_64 armv7 aarch64 x86 ppc64le"
 license="GPL-3.0-only AND LGPL-2.1-only AND LGPL-3.0-only AND MPL-2.0"
+install="$pkgname.post-upgrade"
 depends="ffmpeg-libs"
 makedepends="
 	alsa-lib-dev

community/firefox-esr/firefox-esr.post-upgrade

+#!/bin/sh
+
+ver_old=$2
+
+if [ "$(apk version -t "$ver_old" '102.2.0-r4')" = '<' ]; then
+	# renamed appid, needs profile migration
+	cat 1>&2 <<-EOF
+	*
+	* firefox-esr now has a different appid, so you will see a default new
+	* profile upon starting it. to use your old profile again, you have to
+	* first migrate it using 'firefox-esr --ProfileManager'. select the
+	* previous one (if you didn't rename it, it's probably named
+	* default-something) to migrate it.
+	*
+	EOF
+fi
+
+exit 0