default environment variables

[mrpurest]

Check for DefaultDeadlineEnvVar and add to the environment if it exists.

the idea is that I can add:

import GafferDeadline
GafferDeadline.DefaultDeadlineEnvVar = {"MY_IMPORTANT_ENV": "whatever"}

to a gaffer startup file, and now all my tasks will have the needed environment.

I don't know if this is the best approach but it seems to work.

[ericmehl]

This is one approach that can work, though I'd rather add more official API for it such as setDefaultEnvironmentVariables / getDefaultEnvironmentVariables so it's more visible than checking for an attribute the user has inserted.

But I think something equivalent can now be accomplished with the new extraEnvironmentVariables plug (introduced in 0.58.0.0). That is a CompoundObjectPlug you can set by an expression, or you should be able to set it in a startup script by registering a userDefault metadata entry for it. I haven't tried this yet, so if you do and it doesn't work, let me know and we can figure out why.