diff -Nru lubuntu-artwork-0.58/debian/changelog lubuntu-artwork-0.59~ppa1/debian/changelog
--- lubuntu-artwork-0.58/debian/changelog	2015-12-18 20:25:29.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/changelog	2016-01-08 08:10:08.000000000 +0000
@@ -1,3 +1,13 @@
+lubuntu-artwork (0.59~ppa1) xenial; urgency=medium
+
+  * plymouth theme: don't use a Break by a versioned dep to avoid being
+    unconfigured during wily -> xenial upgrade. wily's prerm is broken and
+    doesn't handle deconfigure action. (LP: #1524480)
+  * Fix maintainer scripts to not be restrictive on arguments passed to them
+    for future upgrades.
+
+ -- Didier Roche <didrocks@ubuntu.com>  Fri, 08 Jan 2016 09:03:24 +0100
+
 lubuntu-artwork (0.58) xenial; urgency=medium
 
   * Backup current artwork items to 1510 items, and prepare 1604 ones.
diff -Nru lubuntu-artwork-0.58/debian/control lubuntu-artwork-0.59~ppa1/debian/control
--- lubuntu-artwork-0.58/debian/control	2015-12-15 22:17:22.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/control	2016-01-08 08:03:16.000000000 +0000
@@ -187,27 +187,26 @@
 
 Package: plymouth-theme-lubuntu-logo
 Architecture: all
-Depends: plymouth, plymouth-label,
+Depends: plymouth (>= 0.9.2-3ubuntu1~),
+         plymouth-label,
          ${misc:Depends},
          ${shlibs:Depends}
 Provides: plymouth-theme
 Replaces: lubuntu-plymouth-theme,
           plymouth (<< 0.8.1-1~)
 Conflicts: lubuntu-plymouth-theme
-Breaks: plymouth (<< 0.9.2-3ubuntu1~),
 Description: plymouth theme for Lubuntu
  This package contain a specific Lubuntu theme for plymouth.
 
 Package: plymouth-theme-lubuntu-text
 Architecture: all
-Depends: plymouth,
+Depends: plymouth (>= 0.9.2-3ubuntu1~),
          plymouth-label,
          plymouth-theme-ubuntu-text,
          ${misc:Depends},
          ${shlibs:Depends}
 Provides: plymouth-theme
 Replaces: plymouth (<< 0.8.1-1~)
-Breaks: plymouth (<< 0.9.2-3ubuntu1~),
 Description: plymouth text theme for Lubuntu
  This package contain a specific Lubuntu theme for plymouth, which display a
  simple text.
diff -Nru lubuntu-artwork-0.58/debian/lubuntu-artwork.postinst lubuntu-artwork-0.59~ppa1/debian/lubuntu-artwork.postinst
--- lubuntu-artwork-0.58/debian/lubuntu-artwork.postinst	2015-10-23 09:50:56.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/lubuntu-artwork.postinst	2016-01-08 08:01:53.000000000 +0000
@@ -24,14 +24,6 @@
 		update-alternatives --set newt-palette /etc/newt/palette.original
 	fi
 	;;
-
-    abort-upgrade|abort-deconfigure|abort-remove)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#
diff -Nru lubuntu-artwork-0.58/debian/lubuntu-artwork.postrm lubuntu-artwork-0.59~ppa1/debian/lubuntu-artwork.postrm
--- lubuntu-artwork-0.58/debian/lubuntu-artwork.postrm	2015-10-23 09:50:56.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/lubuntu-artwork.postrm	2016-01-08 08:01:43.000000000 +0000
@@ -34,20 +34,6 @@
 		update-alternatives --auto newt-palette
 	fi
 	;;
-
-    purge)
-	;;
-
-    upgrade|failed-upgrade|disappear)
-	;;
-
-    abort-install|abort-upgrade)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#
diff -Nru lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-logo.postinst lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-logo.postinst
--- lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-logo.postinst	2015-12-09 19:28:43.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-logo.postinst	2016-01-08 08:01:57.000000000 +0000
@@ -27,14 +27,6 @@
 	    update-initramfs -u
 	fi
 	;;
-
-    abort-upgrade|abort-deconfigure|abort-remove)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#
diff -Nru lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-logo.prerm lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-logo.prerm
--- lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-logo.prerm	2015-12-09 19:28:43.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-logo.prerm	2016-01-08 08:01:22.000000000 +0000
@@ -37,20 +37,6 @@
 	    update-initramfs -u
 	fi
 	;;
-
-    purge)
-	;;
-
-    upgrade|failed-upgrade|disappear)
-	;;
-
-    abort-install|abort-upgrade)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#
diff -Nru lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-text.postinst lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-text.postinst
--- lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-text.postinst	2015-12-09 19:28:43.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-text.postinst	2016-01-08 08:02:03.000000000 +0000
@@ -27,14 +27,6 @@
 	    update-initramfs -u
 	fi
 	;;
-
-    abort-upgrade|abort-deconfigure|abort-remove)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#
diff -Nru lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-text.prerm lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-text.prerm
--- lubuntu-artwork-0.58/debian/plymouth-theme-lubuntu-text.prerm	2015-12-09 19:28:43.000000000 +0000
+++ lubuntu-artwork-0.59~ppa1/debian/plymouth-theme-lubuntu-text.prerm	2016-01-08 08:01:30.000000000 +0000
@@ -37,20 +37,6 @@
 	    update-initramfs -u
 	fi
 	;;
-
-    purge)
-	;;
-
-    upgrade|failed-upgrade|disappear)
-	;;
-
-    abort-install|abort-upgrade)
-	;;
-
-    *)
-	echo "$0 called with unknown argument \`$1'" 1>&2
-	exit 1
-	;;
 esac
 
 #DEBHELPER#