[racket] Fwd: Handin server - question re teachpacks

Hi all,

I have an assignment on which my students are using a custom teachpack I had them download from my web site.  How can I set up the checker for this assignment, so that the teachpack is available as the server evaluates their code?

Further details:  I am using the "check:" macro.  I have tried putting the teachpack in the assignment's directory, and adding (build-path ASSIGNMENT-DIR "my-teachpack-name-here.rkt") to the list I feed to sandbox-namespace-specs, but this doesn't seem to work.  Also, the only error message I get is the one I specified with :user-error-message; it says nothing about paths or files.

Any help is appreciated.  Thanks.

Best,
Jordan