Re: [STUMP] trouble requiring swank

[Trevor Murphy]

On Tue, May 15, 2012 at 12:00 PM,  <address@hidden> wrote:
> Date: Tue, 15 May 2012 12:09:09 +0800
> From: Eric Abrahamsen <address@hidden>
> To: address@hidden
> Subject: [STUMP] trouble requiring swank

> I really have no idea what would be causing this -- I've only got one
> sbcl on my system, and it's definitely 1.0.56, so I don't know what
> would be trying to use sbcl 1.0.54. I'm able to require sb-introspect
> from a regular repl?

Hey, Eric.

Fellow Archer here. One thing that's bitten me before is assuming that
updating the sbcl package also updates the lisp processor used by
stumpwm. It took me two similar swank issues to figure this out. I
think the following explanation is right, but I'm no expert.

When you compile stumpwm, you're using your current sbcl binary and
dumping a copy / image of that compiled result for xinit to call
later. This copy / image handles its own lisp processing from then on
and never talks to the sbcl binary again (as far as I can tell).

Thus if you compiled stumpwm under sbcl 1.0.54, then updated sbcl and
swank, you might get this error. The solution in that case is to
recompile stumpwm against the sbcl you have now. I just do yaourt -S
stumpwm-git every time I see that sbcl has updated.

Hope that helps,

Trevor