Adding alternative handling for /usr/bin/lzip.

Signed-off-by: Daniel Baumann <daniel@debian.org>

debian/lunzip.postinst

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -e
+
+case "${1}" in
+	configure)
+		update-alternatives --quiet \
+			--install /usr/bin/lzip lzip /usr/bin/lzip.decompressor 10 \
+			--slave /usr/share/man/man1/lzip.1.gz lzip.1.gz /usr/share/man/man1/lzip.decompressor.1.gz
+		;;
+
+	abort-upgrade|abort-remove|abort-deconfigure)
+
+		;;
+
+	*)
+		echo "postinst called with unknown argument \`${1}'" >&2
+		exit 1
+		;;
+esac
+
+#DEBHELPER#
+
+exit 0

debian/lunzip.prerm

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+set -e
+
+case "${1}" in
+	remove|upgrade|deconfigure)
+		update-alternatives --quiet --remove lzip /usr/bin/lzip.decompressor
+		;;
+
+	failed-upgrade)
+
+		;;
+
+	*)
+		echo "prerm called with unknown argument \`${1}'" >&2
+		exit 1
+		;;
+esac
+
+#DEBHELPER#
+
+exit 0

debian/rules

@@ -6,6 +6,13 @@
 override_dh_auto_install:
 	dh_auto_install -- DESTDIR=$(CURDIR)/debian/lunzip
 
+	# alernative handling
+	mv debian/lunzip/usr/bin/lunzip debian/lunzip/usr/bin/lzip.decompressor
+	mv debian/lunzip/usr/share/man/man1/lunzip.1 debian/lunzip/usr/share/man/man1/lzip.decompressor.1
+
+	ln -s /usr/bin/lzip.decompressor debian/lunzip/usr/bin/lunzip
+	ln -s /usr/share/man/man1/lzip.decompressor.1.gz debian/lunzip/usr/share/man/man1/lunzip.1.gz
+
 override_dh_builddeb:
 	dh_builddeb -- -Zxz