[racket] use of `raco setup -l ...`

I want to restrict to setting up just the collection I'm developing.
I've created a development link `raco planet link dsheap vis-eval 1 0
<path-to-package-dir>`, and now I'd like to generate documentation (or
at least see just the errors generated when I do), so I try

    raco setup -l dsheap/vis-eval:1:0

...but this generates an error, as does

   raco setup -l <path-to-package-dir>

  
-- 
Danny Heap
BA4270			416-978-5899
heap at cs.utoronto.ca	http://www.cs.utoronto.ca/~heap