[Mailman-Developers] Upgrading from Mailman 3.0 installed with mailman-bundler: sassc error

[Stephen J. Turnbull]

Terri Oda writes:

 > the solution is
 > 1. install rubygem-sass
 > 2. update mailman_web/development.py so that COMPRESS_PRECOMPILERS asks 
 > for sass instead of sassc

I suppose the idea was to depend on sassc and libsass rather than
Ruby.  Do we really need to introduce a dependency on Ruby?  Won't
that pull in a whole ecosystem?