[racket-dev] tool transition leads to fragile middle-ground

Updating tools from drscheme->drrracket involves two steps:

1) changing the tool to refer to drracket, and 
2) changing the info.rkt file to refer to drracket-tools rather than tools.

Unfortunately, if you do #2 before #1, you get a real head-scratcher of an error message:

define-unit-binding: unit argument expects an untagged import with signature drscheme:tool^, which this usage context does not supply

The baffling thing about this is that drscheme:tool^ *is* the signature that this thing supplies.  I took a look at the tool infrastructure, and there's some regexp-rewriting stuff that scared me.  I conjecture that the (correct) error message is one that refers to the drracket:tool^ signature, but that it's getting rewritten into one that refers to drscheme:tool^.

I'm not sure how many people are going to fall into this hole, but the error message here steers you in the wrong direction.

John

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4669 bytes
Desc: not available
URL: <http://lists.racket-lang.org/dev/archive/attachments/20110210/cf830475/attachment.p7s>