Problems with DEFSYSTEM-DEPENDS-ON
rpgoldman at sift.info
Mon Apr 9 16:22:39 UTC 2018
On 9 Apr 2018, at 11:17, Attila Lendvai wrote:
>> A cheesy fix would simply be to wrap it in IGNORE-ERRORS. But it
>> might cause
>> errors in its present form.
> i've learned, painfully, that indiscriminate ignore-errors will almost
> always bite you back (in the form of wasted debugging time), no matter
> how innocent they look.
>> This really is more a QL issue than an ASDF one (although it
>> illustrates an
>> issue with wrapping errors, IMO).
> while this is true, the implementation of QL requires a reliable way
> to hook into the internal state of various versions of ASDF (namely,
> into the situation when ASDF is looking for a system, and not finding
> it will lead to an error without QL intervention). if i understand it
> correctly, this is the crux of this issue.
Sure, and I am happy to try to support this, but not to the extent of
recovering a copy of ASDF 2.x and trying to run it.
The problem is that I don't know when the missing component condition
was added to ASDF, and doing this right would involve checking the
enclosed condition to see if it's a missing component error. I know how
to do that for a modern ASDF, but I don't know how to handle ASDFs that
are too old to have this condition class. And I don't fee like it's my
job to think about that: I think it's perverse to continue trying to use
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