Re: [gentoo-dev] s6.eclass: new eclass for installing s6 services

[William Hubbs]

On Mon, Jun 01, 2015 at 01:39:01PM -0400, Brian Evans wrote:
> Can support be added for a run/finish log script?
> Should be no big deal to add what amounts to
>
> doexe $(s6_get_servicedir)/$name/log
> newexe run-s6 run
>
> Otherwise i may just cheat and use $name/log as the name on a second
> call since the eclass does not do any $name validation.

I'm open to it, I'm just not sure how I would make it happen since the
finish script for the service itself is optional. For example:

s6_install_service service script-1 script-2

In the above, script-2 is optional and could either be the finish script
for ${service} or the run script for ${service}/log, which is a service
itself.

The only way I can think of to allow service and log service
installation at the same time would be to use a reserved value such as
"none" to indicate that a script should be skipped. If I did that, to
install a run script and a log run script might look like:

s6_install_service service run-script none log-run-script

If you have a finish script, the call would be:

s6_install_service service run-script finish-script log-run-script

For either of these calls, there would also be an optional final
argument which would be the log-finish-script.

The tradeoff here would be that whatever I choose to indicate that a
script is skipped can't be used as a file name.

What do you think?

William