Package: insserv Version: 1.12.0-11 Severity: wishlist Hi,
Most init scripts in Debian start with a line like
[ -x /usr/sbin/some-daemon ] || exit 0
to handle the common situation when a package has been removed, but not
purged. It would be nice if insserv could provide a way to ignore a
script altogether when a file isn’t there, for example via a new header
in the INIT INFO block:
# X-If-Exists: /usr/sbin/some-daemon
This line usually isn’t needed because the scripts exit gracefully
anyway. Still, such a header would make it possible for mutually
exclusive init scripts from conflicting packages to provide the same
facility name. For example, /etc/init.d/some-daemon from the
some-daemon package could say
# Provides: some-daemon
# X-If-Exists: /usr/sbin/some-daemon
while /etc/init.d/better-daemon states
# Provides: some-daemon
# X-If-Exists: /usr/sbin/better-daemon
Other scripts which *-Start: some-daemon don’t care whether behind the
scenes it really is some-daemon or the interface-compatible
better-daemon. There is no need for a new $some-daemon virtual facility
name.
For a prior discussion on how a thing like this could be useful in
Debian, see the case of console-tools and kbd in
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=542225#10>.
Best regards,
--
Michael Schutte <[email protected]>
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