.add_derivatives error when Pipepine Name already in use: incomplete error message

[arovai]

I accidentally called layout.add_derivatives(dir) twice, resulting in an attempt to add twice the same directory in the derivatives on my layout:

layout.add_derivatives(dir)
layout.add_derivatives(dir)

The error message read as follows:

bids.exceptions.BIDSDerivativesValidationError: Pipeline name '%s' has already been added to this BIDSLayout. Every added pipeline must have a unique name!

In this error message, it seems like the '%s' doesn't get replaced by the actual name of my pipeline. Looks like a little bug, isn't?

[effigies]

Good catch. Any interest in opening a PR to fix it?

[arovai]

Done!