George V. Reilly wrote: [...]
Adding libperl-dev got me +perl. I still haven't figured out +mzscheme.
[...]
Well, search the list of additional installable packages for something like mzscheme-dev or libmzscheme-dev... or maybe libmzsch209_000.dev, libmzgc209_000.dev, or whatever. If there is a list which you can grep, try listing everything with "mz" in it. If you find several with the same version number, then in doubt install them all; OTOH, if, after checking and double-checking, you still can't find any such packages in the Ubuntu distributions available to you, try Googling for an independent software source from which you might download MzScheme (with "development" stuff) for Linux.
Best regards, Tony.