[easybuild] how to set dependency to not use compiler?

[Niek de Klein]

I have an easyconfig file (for HOMER) where I use

toolchain = {'name': 'goolf', 'version': '1.7.20'}

And in the dependencies I have a dependency (Weblogo) that is built
without compiler. When I try to install HOMER with easybuild I get the
error:

ERROR: Irresolvable dependencies encountered: Weblogo/2.8.2-goolf-1.7.20

when it should be using Weblogo/2.8.2.

My dependencies in the HOMER.eb file look like this:

dependencies = [
    ('Ghostscript', '9.16'),
    ('Weblogo', '2.8.2'),
    ('BLAT', '3.5'),
]

How can I set in dependency that it should use Weblogo/2.8.2, not
Weblogo/2.8.2-goolf-1.7.20?

Thanks,
Niek