This v 8.1 collection path looks incorrect...

[Don Green]

(current-library-collection-paths)

'(#<path:/home/don/.plt-scheme/4.2.1/collects> #<path:/home/don/.racket/8.1/collects> #<path:/home/don/racket/collects/>)

I suspect the above is incorrect because I think the 8.1 path should be to dir: /pkgs rather than /collects.  Like this:

#<path:/home/don/.racket/8.1/pkgs>

[Matthew Flatt]

Just to clarify, "collects" is as intended there. Packages are found
via `current-library-collection-links` (although, as I mentioned in the
other reply, that's not a parameter that you normally need to set).