app-sci/scilab emerges and runs cleanly in my ppc system. I checked with www.scilab.org and the system claims portability. Maybe it would be appropriate to add some other ~arch keywords too.. I don't know the policy, sorry :-) . I'm pretty sure its okay to put under ~ppc and maybe eventually ppc. Reproducible: Always Steps to Reproduce: 1. 2. 3.
I had some problems testing 3.0, but I've marked scilab 2.7-r3 ~ppc. Thanks for the info!