CL-USER> (ql:quickload "gsll")
To load "gsll":
  Load 14 ASDF systems:
    alexandria asdf cffi cffi-grovel cffi-libffi cl-ppcre
    iterate lisp-unit metabang-bind named-readtables
    split-sequence static-vectors trivial-features
    trivial-garbage
  Install 2 Quicklisp releases:
    antik gsll
; Fetching #<URL "http://beta.quicklisp.org/archive/antik/2019-10-08/antik-master-df14cb8c-git.tgz">                                                                                          
; 1616.69KB                                                                                                                                                                                   
==================================================
1,655,490 bytes in 1.51 seconds (1069.95KB/sec)
; Fetching #<URL "http://beta.quicklisp.org/archive/gsll/2018-08-31/gsll-quicklisp-eeeda841-git.tgz">                                                                                         
; 310.53KB                                                                                                                                                                                    
==================================================
317,981 bytes in 0.18 seconds (1764.37KB/sec)
; Loading "gsll"                                                                                                                                                                              
While evaluating the form starting at line 21, column 0
  of #P"/home/xero/quicklisp/dists/quicklisp/software/gsll-quicklisp-eeeda841-git/gsll.asd":


---------------------Debugger output----------------------------
Error while trying to load definition for system gsll from                                                                                                                                    
pathname                                                                                                                                                                                      
/home/xero/quicklisp/dists/quicklisp/software/gsll-quicklisp-eeeda841-git/gsll.asd:                                                                                                           
                                                                                                                                                                                              
   Unable to load any of the alternatives:                                                                                                                                                    
   ("libffi.so.7" "libffi32.so.7" "libffi.so.6" "libffi32.so.6"                                                                                                                               
    "libffi.so.5" "libffi32.so.5")
   [Condition of type ASDF/FIND-SYSTEM:LOAD-SYSTEM-DEFINITION-ERROR]

Restarts:
 0: [RETRY] Try loading the foreign library again.
 1: [USE-VALUE] Use another library instead.
 2: [TRY-RECOMPILING] Recompile libffi and try loading it again
 3: [RETRY] Retry loading FASL for #<CL-SOURCE-FILE "cffi-libffi" "libffi" "libffi">.
 4: [ACCEPT] Continue, treating loading FASL for #<CL-SOURCE-FILE "cffi-libffi" "libffi" "libffi"> as having been successful.
 5: [RETRY] Retry EVAL of current toplevel form.
 --more--