nixos/systemd: add upstreamSystemWants option

[offlinehacker]

We need this for some lxc implementation like libcontainer docker, to disable uneeded targets, which fail at boot time.

[wmertens]

👍

[edolstra]

What exactly fails? I don't want to add options to work around bugs.

[offlinehacker]

It's not problem only the failure(well yeah mounting of few kernel
filesystems fails), it's just that i don't want to start everything in
lightweight docker containers. More speciffically i don't need sysinit
target.

On Fri, Jun 27, 2014 at 2:57 PM, Eelco Dolstra notifications@github.com
wrote:

What exactly fails? I don't want to add options to work around bugs.

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[edolstra]

But targets don't do anything except pull in other units. What units/services specifically don't you want?

[offlinehacker]

Ok i see, so specifically:

"dev-hugepages.mount"
"dev-mqueue.mount"
"proc-sys-fs-binfmt_misc.mount"
"sys-fs-fuse-connections.mount"
"sys-kernel-config.mount"
"sys-kernel-debug.mount"

[7c6f434c]

@edolstra So, are you OK with this customisation possibility?

[Fuuzetsu]

Ping

[7c6f434c]

@edolstra is there any drawback in merging this? Apparently is just adds a configuration option with the same default as before, so net win?

[edolstra]

Again, I don't see the point in an option to disable units that systemd won't even try to start anyway.

If there actually are mount units that fail then they apparently lack a Condition to prevent them from being started, which should be fixed.

[7c6f434c]

@offlinehacker do you think that what @edolstra says is a better fix?

[offlinehacker]

You can close this issus. Docker was not ment for running whole os(well you
can, but besides testing, you are doing something wrong), but for running
single processes.
On Nov 13, 2014 10:43 AM, "Michael Raskin" notifications@github.com wrote:

@offlinehacker https://github.com/offlinehacker do you think that what
@edolstra https://github.com/edolstra says is a better fix?

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