On 1 Aug 2017, at 17:21, Pascal Bourguignon pjb@informatimago.com wrote:

It works perfectly, but on clisp, since DYNAMICALLY-MODIFIABLE doesn’t come from EXT. Where does it come from???

Oh, and but on abcl, which also has a EXT package.

I would advise remaining those short-named packages, unless they implement a CDR-specified API. “ORG.CLISP.EXT” sounds a good unique name, or at least “CLISP-EXT”…

[pjb@despina :0.0 ~]$ clall '(compile-file "/tmp/d.lisp")'

Armed Bear Common Lisp:

Implementation: Armed Bear Common Lisp 1.4.0 on Mac OS X 10.12.6 on X86_64 NIL (despina.home)

Reading of: "(compile-file "/tmp/d.lisp")" signaled no error

Evaluation of: (COMPILE-FILE "/tmp/d.lisp") signaled the following error: #<READER-ERROR {2D87B142}> The symbol "DYNAMICALLY-MODIFIABLE" was not found in package EXT. wrote nothing on *ERROR-OUTPUT* wrote nothing on *TRACE-OUTPUT* wrote the following *STANDARD-OUTPUT* (lines excluded):

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; Compiling /private/tmp/d.lisp ... ; (DEFPACKAGE "EXT" ...)

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returned no value