Re: [Chicken-hackers] [PATCH] Rework library loading to support conditional unit entry

[Peter Bex]

On Tue, May 29, 2018 at 06:42:33PM +1200, Evan Hanson wrote:
> Hello fellow hackers,
> 
> Here is a big, gnarly patch that finishes the work I started in Bergen,
> which was to change the way we handle library dependencies so that units
> can be loaded conditionally. This was inspired by Peter's changes to
> make import expressions lexically-scoped, so that you can write a
> program like the following and have it work like you'd expect:
> 
>   (if (some-condition)
>       (let () (import (foo)) ...)
>       (let () (import (bar)) ...))
> 
> With Peter's changes, those imports will only affect the syntactic
> environments of their respective branches. However, when the libraries
> "foo" and "bar" are compiled in (for example when "-static" is used),
> they'll both be loaded unconditionally. This patch changes things so
> that those libraries will only be loaded when program execution reaches
> the corresponding import expression.

Hi Evan,

I think now's a good time to revisit this patch.  Of course it no longer
applies.  Would you care to rebase it?

Cheers,
Peter

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