Bug#804332: /usr/bin/dh_installinit: dh_installinit: Add an option to not start a service if systemd is PID1

[Laurent Bigonville]

Package: debhelper
Version: 9.20151005
Severity: normal
File: /usr/bin/dh_installinit

Hi,

In some cases, we want a service to be started if PID1 != systemd but if
we are using systemd.

For example if a service can be socket activated or if dbus is
configured to start it if a specific device is pluged in.

In that case, the service should only be restarted on upgrade if it was
already activated.

Cheers,

Laurent Bigonville

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_BE.utf8, LC_CTYPE=fr_BE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages debhelper depends on:
ii  binutils                 2.25.1-7
ii  dh-strip-nondeterminism  0.013-1
ii  dpkg                     1.18.3
ii  dpkg-dev                 1.18.3
ii  file                     1:5.25-2
ii  libdpkg-perl             1.18.3
ii  man-db                   2.7.5-1
ii  perl                     5.20.2-6
ii  po-debconf               1.0.18

debhelper recommends no packages.

Versions of packages debhelper suggests:
ii  dh-make  1.20150601

-- no debconf information