The -M option is invalid on older releases of Debian, but all supported releases have this option.
Also, -m is to avoid creating the home directory, whereas -M creates it.

Since lenny support has been dropped by Debian more than a year ago, I would rather not add conditions to the preinst script to workaround its shortcomings.

Hi Jraby, I think you got -m and -M confused.

   -m, --create-home
       Create the user's home directory if it does not exist. The files and directories contained in the skeleton directory
       (which can be defined with the -k option) will be copied to the home directory.

       By default, if this option is not specified and CREATE_HOME is not enabled, no home directories are created.

   -M
       Do no create the user's home directory, even if the system wide setting from /etc/login.defs (CREATE_HOME) is set to yes.

You might want to consider using --long options, because:
It works on all distros.
It is more clear.
It resolves this bug :)

Indeed, I mistyped that sentence:
<pre>
Also, -M is to avoid creating the home directory, whereas -m creates it.
</pre>

The thing is, we don't want files from the skeleton directory in the sogo user home. That's why the homedir is not created by useradd (-M) regardless of system settings.

I guess we could remove the -M switch since the homedir won't be created anyway when specifying -r (--system)

great!

Jean, has this been done?

Fixed : https://github.com/inverse-inc/sogo/commit/82253e91d2e8f0410625e11a03737883ea9f1d60