[racket] Generating docs for gh-pages

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I'm trying to follow the directions Matthew Butterick gave for
generating scribble docs to push to a gh-pages branch:

http://lists.racket-lang.org/users/archive/2014-May/062339.html

I'm doing this for my ralist package:

https://github.com/dvanhorn/ralist

If I'm in the root directory of a clean checkout of the master branch
of that code, I can successfully run `raco pkg install' with no errors
or warnings.  The installed docs for ralist all look good.

Then when I try to build the docs for gh-pages, I run:

$ scribble --dest-name doc --htmls +m --redirect-main \
http://docs.racket-lang.org/ data/ralist/scribblings/main.scrbl
 [Output to doc/index.html]
Warning: some cross references may be broken due to undefined tags:
 (dep ((collects #"data" #"ralist.rkt") list-ref/set))
 (dep ((collects #"data" #"ralist.rkt") in-list))
 (dep ((collects #"data" #"ralist.rkt") list-update))
...

and all of the references to names defined in this package are broken.

Can someone point me in the right direction?  This is on
6.0.1.8--2014-05-10(fa68b57d/d).

Thanks,
David
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