[Buildbot-devel] Interpolate doesn't work with Source

[Kenny Ho]

Hi,

I am using the Repo step and I am trying to key off a Property by passing in a Interpolate:

Repo(manifest_url=url, manifest_branch=Interpolate("%(prop:branch)s"), ...

but instead of turning the object into string, I get the object pass straight into the commands causing error:

cmd.args = {.... 'manifest_branch': <buildbot.process.properties.Interpolate instance at...> , ...}

I looked at the source of the Repo step and renderables seems to be defined.  Does anyone know how to work around this?  I am trying to extend the Repo class, but I don't know how to access the build properties during the __init__ of a build step and I don't know how to trigger an Interpolate render manually to get a string.

Regards,
Kenny
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