* debian/config, debian/postinst, debian/prerm, debian/rules,

debian/templates, usr/bin/byobu, usr/bin/byobu-launcher,
  usr/bin/byobu-launcher-install, usr/bin/byobu-launcher-uninstall:
  - support a preseedable debconf question that allows
    an administrator to launch byobu by default on all logins on a
    system (default = false), allow for per-user overriding

debian/changelog

@@ -2,6 +2,12 @@ byobu (2.52) unreleased; urgency=low
 
   * debian/rules, usr/bin/byobu, usr/bin/byobu-launcher: deprecate the
     launcher script as a separate script; do this in /usr/bin/byobu
+  * debian/config, debian/postinst, debian/prerm, debian/rules,
+    debian/templates, usr/bin/byobu, usr/bin/byobu-launcher,
+    usr/bin/byobu-launcher-install, usr/bin/byobu-launcher-uninstall:
+    - support a preseedable debconf question that allows
+      an administrator to launch byobu by default on all logins on a
+      system (default = false), allow for per-user overriding
 
  -- Dustin Kirkland <kirkland@ubuntu.com>  Wed, 03 Feb 2010 10:56:23 -0800
 

debian/config

@@ -0,0 +1,9 @@
+#! /bin/sh -e
+
+. /usr/share/debconf/confmodule
+db_version 2.0
+
+db_input medium byobu/launch-by-default || true
+db_go
+
+exit 0

debian/postinst

@@ -1,7 +1,17 @@
 #!/bin/sh -e
 
+. /usr/share/debconf/confmodule
+db_version 2.0
+
 PKG="byobu"
 
+db_get byobu/launch-by-default
+if [ "$RET" = true ]; then
+	ln -sf /usr/bin/$PKG-launcher /etc/profile.d/$PKG.sh
+else
+	rm -f /etc/profile.d/$PKG.sh
+fi
+
 # The target of the diversion somehow disappeared which will cause
 # the divert removal to fail; we don't want that to happen
 [ -e "/usr/bin/screen.real" ] && [ ! -e "/usr/bin/screen" ] && cp -a /usr/bin/screen.real /usr/bin/screen

debian/prerm

@@ -6,6 +6,7 @@ PKG="byobu"
 for i in /usr/bin/screen-profiles-status /usr/bin/screen-launcher; do
 	[ -h "$i" ] && rm -f "$i"
 done
+rm -f /etc/profile.d/$PKG.sh
 
 true
 

debian/rules

@@ -54,7 +54,6 @@ install: build install-po
 	#dh_link usr/bin/byobu-status usr/bin/screen-profiles-status
 	#dh_link usr/bin/byobu-launcher usr/bin/screen-launcher
 	dh_link usr/share/byobu/keybindings/f-keys usr/share/byobu/keybindings/common
-	dh_link usr/bin/byobu usr/bin/byobu-launcher
 	for i in black dark dark_blue dark_cyan dark_green dark_purple dark_red dark_yellow light light_blue light_cyan light_green light_purple light_red light_yellow; do dh_link usr/share/byobu/profiles/common usr/share/byobu/profiles/$${i}; done
 	dh_install -X.bzr
 

debian/templates

@@ -0,0 +1,11 @@
+Template: byobu/launch-by-default
+Type: boolean
+Default: false
+Description: Do you want to launch Byobu at shell login for all users?
+ Byobu can launch automatically at login (e.g. console, ssh), providing
+ an attachable/detachable window manager on the command line.
+ .
+ If you select this option, Byobu will install a symlink in /etc/profile.d.
+ This setting is system-wide, for all users logging into the system.
+ .
+ Individual users can disable this by touching ~/.byobu/disable-autolaunch.

usr/bin/byobu

@@ -27,6 +27,11 @@ if [ "$#" = "1" ] && [ "$1" = "-v" ]; then
 	exit 0
 fi
 
+# Check if we're being autolaunched, and this user explicitly does not want it.
+if [ "$0" = "/etc/profile.d/$PKG.sh" ] && [ -r "$HOME/.$PKG/disable-autolaunch" ]; then
+	exit 0
+fi
+
 # Sanitize the environment
 byobu-janitor --force
 

usr/bin/byobu-launcher

@@ -0,0 +1,24 @@
+#!/bin/sh -e
+#
+#    byobu-launcher - conditionally launch byobu
+#    Copyright (C) 2010 Canonical Ltd.
+#
+#    Authors: Dustin Kirkland <kirkland@canonical.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, version 3 of the License.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+PKG="byobu"
+
+[ -r "$HOME/.$PKG/disable-autolaunch" ] && exit 0
+
+exec /usr/bin/$PKG

usr/bin/byobu-launcher-install

@@ -28,6 +28,7 @@ install_launcher() {
 	echo "$launcher_line" >> "$dest"
 	# Hush login, since byobu will handle motd printing
 	touch "$HOME"/.hushlogin
+	rm -f "$HOME/.$PKG/disable-autolaunch"
 }
 
 # Sanitize the environment

usr/bin/byobu-launcher-uninstall

@@ -26,8 +26,9 @@ remove_launcher() {
 		sed -i "/$PKG-launcher$/d" "$dest"
 		sed -i "/screen-launcher$/d" "$dest"
 	fi
+	touch "$HOME/.$PKG/disable-autolaunch"
 	# the install disabled motd printing; re-enable
-	rm "$HOME"/.hushlogin 2>/dev/null || true
+	rm -f "$HOME"/.hushlogin
 }
 
 for i in ".profile" ".bashrc" ".bash_profile" ".zprofile"; do