From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jacek Konieczny <jajcus@jajcus.net>
Subject: Re: [PATCH] systemd: add support initial systemd
 service files
Date: Thu, 13 Mar 2014 10:55:01 +0100
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>, =?UTF-8?B?SmFuIFLEmWtvcmFqc2tp?= <baggins@pld-linux.org>, Ian Jackson <ian.jackson@eu.citrix.com>, M A Young <m.a.young@durham.ac.uk>, xen-devel@lists.xenproject.org, "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
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On 03/13/14 10:52, Ian Campbell wrote:
> On Thu, 2014-03-13 at 09:03 +0100, Jacek Konieczny wrote:
>> On 03/13/14 01:06, Luis R. Rodriguez wrote:
>>> On Wed, Mar 12, 2014 at 5:01 PM, M A Young <m.a.young@durham.ac.uk> wrote:
>>>>> But this didn't seem to work, I suppose I'm not using the variables
>>>>> correctly.
>>>>
>>>>
>>>> Systemd only provides limited variable support - you can use them for
>>>> arguments but not the executables.
>>>
>>> Not even the path to the executables ? ie $FOO/bar
>>
>> No, and there are some good reasons for that.
>> And if anybody really needs to change that after installation, he may
>> copy the unit files from /lib/systemd/system to /etc/systemd/system and
>> edit them.
>>
>> Other way would be to use generators to dynamically build the units, but
>> I really don't thing there is a good reason for having the paths
>> dynamic.
> 
> Would it be preferable to have the Xen build system produce foo.service
> from foo.service.in doing the variable substitution at build time?

Yes, IMHO, that is the right way to do this.

Greets,
Jacek