notify users about discontinuation

Quicksaver abandoned his more complex extensions because they rely
heavily on an API which Mozilla will deprecate without properly
replacing features necessary for the Add-Ons to work. [1]

Users upgrading should be prepared for the package to stop working as
announced. Users trying to first install even after the critical Firefox
version are also notified unconditionally.

[1]: as explained on http://fasezero.com/addons/

3 files changed, 14 insertions, 2 deletions

diff --git a/.SRCINFO b/.SRCINFO
index 741c78a945a0..4bcbb7583760 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,8 +1,9 @@
 pkgbase = firefox-extension-beyond-australis-git
 	pkgdesc = A Firefox add-on to improve the feeling of using the new Australis theme.
 	pkgver = 1.4.8
-	pkgrel = 1
+	pkgrel = 2
 	url = https://github.com/Quicksaver/The-Fox--Only-Better
+	install = discontinuation-notice.install
 	arch = any
 	license = MPLv2
 	makedepends = git
diff --git a/PKGBUILD b/PKGBUILD
index 8956dc5e1b3e..0111ddf9f926 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -4,13 +4,14 @@
 
 pkgname=firefox-extension-beyond-australis-git
 pkgver=1.4.8
-pkgrel=1
+pkgrel=2
 pkgdesc='A Firefox add-on to improve the feeling of using the new Australis theme.'
 url='https://github.com/Quicksaver/The-Fox--Only-Better'
 arch=('any')
 license=('MPLv2')
 depends=('firefox')
 replaces=('firefox-extension-the-fox-only-better')
+install=discontinuation-notice.install
 
 makedepends+=('git')
 source+=("${_gitname:=${pkgname%-git}}::${_giturl:-git+$url}")
diff --git a/discontinuation-notice.install b/discontinuation-notice.install
new file mode 100644
index 000000000000..08b6f0cb34fc
--- /dev/null
+++ b/discontinuation-notice.install
@@ -0,0 +1,10 @@
+post_install() {
+  echo "Changes in the Firefox extension API will make Beyond Australis cease"
+  echo "working by November 2017 with Firefox 57. Development is discontinued."
+}
+
+post_upgrade() {
+  post_install
+}
+
+# vim: ts=2 sw=2 et: