Replace optional dep to python2-geographiclib with message

As the message says, python2-geographiclib is no longer available as a
regular Arch package. We instead now provide some pointers on how to
install it.

2 files changed, 20 insertions, 2 deletions

diff --git a/PKGBUILD b/PKGBUILD
index d677a14c8152..5c3e7bd06cae 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -1,7 +1,7 @@
 # Maintainer: Vain <aurmaint1 on host: uninformativ dot de>
 pkgname=asciiworld-git
 pkgver=15.03
-pkgrel=2
+pkgrel=3
 pkgdesc="ASCII world map and tools"
 arch=('i686' 'x86_64')
 url="https://github.com/vain/asciiworld"
@@ -14,12 +14,12 @@ optdepends=('curl: Retrieving various data'
             'python-pygeoip: Reading GeoIP databases'
             'geoip-database-extra: An actual GeoIP database'
             'python2: Additional tools, e.g. calculating tracks'
-            'python2-geographiclib: Calculating geodetics'
             'ncurses: For tput')
 provides=("${pkgname%-git}")
 conflicts=("${pkgname%-git}")
 source=('git://github.com/vain/asciiworld.git')
 md5sums=('SKIP')
+install=asciiworld.install
 
 pkgver() {
   cd "$srcdir/${pkgname%-git}"
diff --git a/asciiworld.install b/asciiworld.install
new file mode 100644
index 000000000000..77426b05fce3
--- /dev/null
+++ b/asciiworld.install
@@ -0,0 +1,18 @@
+post_install() {
+  cat <<EOF
+"asciiworld-waypoints", an optional tool not required by the core
+"asciiworld" program, requires the python2 library "geographiclib". It
+used to be available as an AUR package but has not been migrated to
+AUR 4.
+
+Either use the old PKGBUILD [1] or install the package using pip:
+
+  # pip2 install geographiclib
+
+[1]: http://pkgbuild.com/git/aur-mirror.git/tree/python2-geographiclib/PKGBUILD
+EOF
+}
+
+post_upgrade() {
+  post_install "$1"
+}