Slime/abcl version compatibility

Alan Ruttenberg alanruttenberg at
Mon Jan 9 19:10:37 UTC 2017

I'll have a look - thanks.

Its a fairly high overhaul rather than a few incremental improvements which
is why I'm a bit reluctant. SBCL is rather more mature than ABCL①...
On Wed, Jan 4, 2017 at 12:56 PM Luís Oliveira <luismbo at> wrote:

> On Wed, Jan 4, 2017 at 5:31 PM, Alan Ruttenberg
> <alanruttenberg at> wrote:
> > Rather than cluttering up the newer version what do you think of having
> > slime include the older version and have the swank loader conditionally
> load
> > old or new depending on the ABCL version?
> >
> > There is also slime maintenance cost associated with having it be
> backward
> > compatible.
> FWIW, swank-sbcl.lisp typically accrues conditionals for dealing with
> older versions until sufficient time has passed (usually years) and
> said conditionals become a nuisance.
> Having two different swank implementations for older and newer ABCLs
> seems worse than conditionals in terms of maintenance costs.
> swank-sbcl.lisp contains various tricks for making conditionals more
> manageable. Perhaps some of those practices might help in this case?
> --
> Luís Oliveira
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