Except specificier in imports

[Idiomdrottning]

Note: this is with the patch for #1757 applied, for the future 5.3.0.

Here is the issue. If this is an egg,

cakes.scm:

(module cakes ()
(import scheme (chicken module) match-generics)
(reexport

(rename scheme (define define-og))
(rename match-generics (define-dx define))))

cakes.egg

((synopsis "A min via for import except")

(components (extension cakes)))

And here is a file that uses that egg:

(import (except cakes define))
(define (lamp x) 19)
(define (lamp x y) 21)
(+ (lamp 13 41)

(lamp 12))

The expected behavior is for this to bork or crash.

Instead it evals to 40, as if we had imported

(import (only cakes define))

[sjamaan]

define is a part of the default environment, so it's always there. You can import another definition which will override it, but you can't do it without.

If you put the file using the egg inside a module, it should work as expected.