Giacomo Leidi <goodoldpaul@autistici.org> writes:

> * gnu/packages/syncthing.scm (syncthing-gtk): New variable.

[...]
  
> +    (build-system python-build-system)
> +    (arguments
> +     `(#:python ,python-2))
> +    (propagated-inputs
> +     `(("python2-bcrypt" ,python2-bcrypt)
> +       ("python2-dateutil" ,python2-dateutil)
> +       ("python2-pycairo" ,python2-pycairo)
> +       ("python2-pygobject" ,python2-pygobject)
> +       ("python-nautilus" ,python-nautilus)
> +       ("libappindicator" ,libappindicator)
> +       ("libnotify" ,libnotify)
> +       ("psmisc" ,psmisc)
> +       ("syncthing" ,syncthing)))

I don't think these needs to be propagated, as the 'syncthing-gtk'
executable will be automatically wrapped with a PYTHONPATH that contains
the Python inputs.

I'm not sure about libappindicator, libnotify and psmisc though.
Ideally we'd insert absolute references where appropriate to avoid
propagation.  In the worst case we can wrap it with those in PATH.

Can you look into it and send an updated patch?