[Buildbot-devel] Using environment on the slave side

[Mateusz Loskot]

Stefan Seefeld wrote:
> Mateusz Loskot wrote:
> 
>> I set a requirement for all buildslave instances, to define environment
>> variable BUILHOME - absolute path to buildslave directory.
>> The idea is to make build steps working on all buildslaves,
>> all machines and systems *without* much configuring them,
>> just one env variable.
> 
> As it is important to control the development / runtime environment seen by
> the slaves, I simply make sure the environment that is seen during slave process
> creation is what I need it to be.

Yes, that's why I set BUILDHOME on every slave, manually or
using buildbot.tac, no matter how but buildlsave env includes
this variable

But now, I need to make buildslave using it.
For example, how can I tell slave:

"Read value of BUILDHOME variable in your env and assign it to PATH,
so buildslave's PATH will look like PATH=$BUILDHOME"

Just an example of my idea.

> This can be done by modifying the respective slave
> buildbot.tac files. Alternatively, you could enforce a particular way to start twistd,
> such as by means of a Makefile that controls all environment variables.

This is about setting particular env variable, but as I'm trying to
explain above, I don't know how to use it on slave object side.

Cheers
-- 
Mateusz Loskot
http://mateusz.loskot.net