Past discussion on ASDF loading

[Robert Goldman]

I am finding that ASDF loads itself multiple times, unnecessarily, at 
least on Allegro 11.  E.g., it reloads when I simply invoke 
`(asdf:component-pathname (asdf:find-system "foo"))` for one of my 
systems.

This is annoying because I get redefinition style warnings every time I 
do this, which makes it hard to tell when a system loads cleanly.

I have a vague memory of a discussion that addressed the question of why 
this happens. Does anyone recall the answer, or have a pointer to the 
discussion?

Interestingly, when I load ASDF and then invoke 
`(asdf/component:component-operation-times (asdf:find-system "asdf"))` 
the only time listed is for `define-op`

Thanks,
R