On Sat, Sep 23, 2023 at 10:36 AM Blake McBride <blake@mcbridemail.com> wrote:
I am running a current 64-bit Fedora Linux system.

The version of mkcl I am using is the latest at https://gitlab.common-lisp.net/mkcl/mkcl.git
on branch "master".

Sorry but this is a somewhat oldish backup git repo for MKCL, it is outdated by a couple of commits.
I have to update it manually since the automatic updates got broken a few years ago and I haven't done it often enough lately.

You should use https://github.com/jcbeaudoin/MKCL.git instead.
 

I did a fresh test and, perhaps, it may be loading.  After building a fresh copy, I did the following:

[blake@i9-tower xx]$ mkcl

This is ManKai Common Lisp 1.1.11

Copyright (C) 1984 Taiichi Yuasa and Masami Hagiya
Copyright (C) 1993 Giuseppe Attardi
Copyright (C) 2000 Juan J. Garcia-Ripoll
Copyright (C) 2010-2022 Jean-Claude Beaudoin

ManKai Common Lisp (MKCL) is free software,
and you are welcome to redistribute and/or
modify it under the terms of the GNU LGPL.
See file 'Copyright' in the source code for details.

Type :h for Help.
Top level in: #<thread "Initial" active (15479) 0x7fbbe03a9740 7fbbd8a0f000>.
> (load "quicklisp")

  ==== quicklisp quickstart 2015-01-28 loaded ====

    To continue with installation, evaluate: (quicklisp-quickstart:install)

    For installation options, evaluate: (quicklisp-quickstart:help)

#P"/home/blake/tmp/xx/quicklisp.lisp"
> (load #P"/home/blake/quicklisp/setup.lisp")

#P"/home/blake/quicklisp/setup.lisp"
>


So, it actually did load.  However, here was the problem.  When I did  '(load #P"/home/blake/quicklisp/setup.lisp")' it took so long to load that I thought it was hung.  (I am on on an I9 with 64GB RAM, running at about 4 Ghz.)  It did, however, complete.  The second time I tried this it was nearly instantaneous.  So I suppose the first time it was compiling everything.

I did exactly what you just said.  On very first use QuickLisp compiles itself and that manifests as a fairly long pause, it is a design choice that QuickLisp did on its own...
 

However, after I got QuickLisp loaded, I tried: (ql:quickload :cl-ppcre) and got the following error:

> (ql:quickload :cl-ppcre)
To load "cl-ppcre":
  Load 1 ASDF system:
    cl-ppcre
; Loading "cl-ppcre"
.
;;; Error: in file /home/blake/quicklisp/dists/quicklisp/software/cl-ppcre-20230618-git/convert.lisp, end position 14464,
;;;     and form: (DEFUN MAYBE-ACCUMULATE (STR) ...)
;;;   The function SI::FUNCTION-RETURN-TYPE is undefined.
;;; Compilation failed!


Debugger called in: #<thread "Initial" active (16383) 0x7fdeeaa93740 7fdee30f9000>.

#<a UIOP/LISP-BUILD:COMPILE-FILE-ERROR 140594891262688>:
    COMPILE-FILE-ERROR while compiling #<ASDF/LISP-ACTION:CL-SOURCE-FILE "cl-ppcre" "convert">
Available restarts:

Command   Restart Name        Description
:r1       RETRY               Retry compiling #<ASDF/LISP-ACTION:CL-SOURCE-FILE "cl-ppcre" "convert">.
:r2       ACCEPT              Continue, treating compiling #<ASDF/LISP-ACTION:CL-SOURCE-FILE "cl-ppcre" "convert"> as having been successful.
:r3       RETRY               Retry ASDF operation.
:r4       CLEAR-CONFIGURATION-AND-RETRY Retry ASDF operation after resetting the configuration.
:r5       RETRY               Retry ASDF operation.
:r6       CLEAR-CONFIGURATION-AND-RETRY Retry ASDF operation after resetting the configuration.
:r7       ABORT               Give up on "cl-ppcre"
:r8       REGISTER-LOCAL-PROJECTS Register local projects and try again.
:r9       RESTART-TOPLEVEL    Go back to Top-Level REPL.
:r10      ABORT               Abort this computation: (SI:TOP-APPLY SI:SAFE-EVAL (SI:TOP-LEVEL) NIL -7).
:r11      TERMINATE-THREAD    Terminate this thread: #<thread "Initial" active (16383) 0x7fdeeaa93740 7fdee30f9000>.


Type :h for Help.
Broken at IHS[14]> LAMBDA. In: #<thread "Initial" active (16383) 0x7fdeeaa93740 7fdee30f9000>.
 File: "/home/blake/quicklisp/quicklisp/setup.lisp" (Position #6166)
>>


I just tried this in my working copy of MKCL, see the result:

 > (ql:quickload :cl-ppcre)
To load "cl-ppcre":
  Load 1 ASDF system:
    cl-ppcre
; Loading "cl-ppcre"
[package cl-ppcre]...............................
(:CL-PPCRE)
> (lisp-implementation-version)

"1.1.11.188-f731a69"
>


So, no error reported!  Your problem does not seem to reproduce in my context. So much harder to debug...
See the value returned by "(lisp-implementation-version)" just above?  What is it in your instance?