Check Error

Traceback (most recent call last):
   0 File "unknown"
       In sb-ext:name-conflict
     Args (#<package "CFFI"> export cffi-sys::%foreign-funcall-pointer-varargs cffi-sys::%foreign-funcall-pointer-varargs cffi::%foreign-funcall-pointer-varargs)
   1 File "unknown"
       In (flet sb-thread::with-recursive-lock-thunk :in export)
     Args ()
   2 File "unknown"
       In (flet "WITHOUT-INTERRUPTS-BODY-11" :in sb-thread::call-with-recursive-lock)
     Args ()
   3 File "unknown"
       In sb-thread::call-with-recursive-lock
     Args (#<function (flet sb-thread::with-recursive-lock-thunk :in export) {7FC8736F372B}> #<sb-thread:mutex "Package Graph Lock" owner: #<sb-thread:thread "main thread" running {10139802A3}>> t nil)
   4 File "unknown"
       In export
     Args ((cffi-sys:canonicalize-symbol-name-case cffi-sys:foreign-pointer
                                        cffi-sys:pointerp cffi-sys:pointer-eq
                                        cffi-sys:null-pointer
                                        cffi-sys:null-pointer-p
                                        cffi-sys:inc-pointer
                                        cffi-sys:make-pointer
                                        cffi-sys:pointer-address
                                        cffi-sys:%foreign-alloc
                                        cffi-sys:foreign-free
                                        cffi-sys:with-foreign-pointer
                                        cffi-sys:%foreign-funcall
                                        cffi-sys:%foreign-funcall-pointer
                                        cffi-sys::%foreign-funcall-varargs
                                        cffi-sys::%foreign-funcall-pointer-varargs
                                        cffi-sys:%foreign-type-alignment
                                        cffi-sys:%foreign-type-size
                                        cffi-sys:%load-foreign-library
                                        cffi-sys:%close-foreign-library
                                        cffi-sys:native-namestring
                                        cffi-sys:%mem-ref cffi-sys:%mem-set
                                        cffi-sys:make-shareable-byte-vector
                                        cffi-sys:with-pointer-to-vector-data
                                        cffi-sys:%foreign-symbol-pointer
                                        cffi-sys:%defcallback
                                        cffi-sys:%callback) #<package "CFFI-SYS">)
   5 File "unknown"
       In sb-impl::update-package
     Args (#<package "CFFI-SYS"> nil #S(sb-c:definition-source-location
   :namestring "/tmp/checker/qlot/.qlot/dists/quicklisp/software/cffi-20221106-git/src/cffi-sbcl.lisp"
   :indices 32769) nil nil (#<package "COMMON-LISP"> #<package "SB-ALIEN">) (alexandria:removef alexandria:when-let alexandria:with-unique-names
                    alexandria:once-only) nil ("CANONICALIZE-SYMBOL-NAME-CASE" "FOREIGN-POINTER" "POINTERP" "POINTER-EQ"
 "NULL-POINTER" "NULL-POINTER-P" "INC-POINTER" "MAKE-POINTER" "POINTER-ADDRESS"
 "%FOREIGN-ALLOC" "FOREIGN-FREE" "WITH-FOREIGN-POINTER" "%FOREIGN-FUNCALL"
 "%FOREIGN-FUNCALL-POINTER" "%FOREIGN-FUNCALL-VARARGS"
 "%FOREIGN-FUNCALL-POINTER-VARARGS" "%FOREIGN-TYPE-ALIGNMENT"
 "%FOREIGN-TYPE-SIZE" "%LOAD-FOREIGN-LIBRARY" "%CLOSE-FOREIGN-LIBRARY"
 "NATIVE-NAMESTRING" "%MEM-REF" "%MEM-SET" "MAKE-SHAREABLE-BYTE-VECTOR"
 "WITH-POINTER-TO-VECTOR-DATA" "%FOREIGN-SYMBOL-POINTER" "%DEFCALLBACK"
 "%CALLBACK") ("CFFI-SYS") nil nil nil)
   6 File "unknown"
       In (flet "WITHOUT-INTERRUPTS-BODY-11" :in sb-thread::call-with-recursive-lock)
     Args ()
   7 File "unknown"
       In sb-thread::call-with-recursive-lock
     Args (#<function (flet sb-thread::with-recursive-lock-thunk :in sb-impl::%defpackage) {7FC8736F39CB}> #<sb-thread:mutex "Package Graph Lock" owner: #<sb-thread:thread "main thread" running {10139802A3}>> t nil)
   8 File "unknown"
       In sb-impl::%defpackage
     Args ("CFFI-SYS" nil nil nil nil ("COMMON-LISP" "SB-ALIEN") (("ALEXANDRIA" "ONCE-ONLY" "WITH-UNIQUE-NAMES" "WHEN-LET" "REMOVEF")) nil ("CANONICALIZE-SYMBOL-NAME-CASE" "FOREIGN-POINTER" "POINTERP" "POINTER-EQ"
 "NULL-POINTER" "NULL-POINTER-P" "INC-POINTER" "MAKE-POINTER" "POINTER-ADDRESS"
 "%FOREIGN-ALLOC" "FOREIGN-FREE" "WITH-FOREIGN-POINTER" "%FOREIGN-FUNCALL"
 "%FOREIGN-FUNCALL-POINTER" "%FOREIGN-FUNCALL-VARARGS"
 "%FOREIGN-FUNCALL-POINTER-VARARGS" "%FOREIGN-TYPE-ALIGNMENT"
 "%FOREIGN-TYPE-SIZE" "%LOAD-FOREIGN-LIBRARY" "%CLOSE-FOREIGN-LIBRARY"
 "NATIVE-NAMESTRING" "%MEM-REF" "%MEM-SET" "MAKE-SHAREABLE-BYTE-VECTOR"
 "WITH-POINTER-TO-VECTOR-DATA" "%FOREIGN-SYMBOL-POINTER" "%DEFCALLBACK"
 "%CALLBACK") ("CFFI-SYS") nil nil #S(sb-c:definition-source-location
   :namestring "/tmp/checker/qlot/.qlot/dists/quicklisp/software/cffi-20221106-git/src/cffi-sbcl.lisp"
   :indices 32769) nil)
   9 File "unknown"
       In sb-int:simple-eval-in-lexenv
     Args ((sb-impl::%defpackage "CFFI-SYS" 'nil 'nil 'nil 'nil
                      '("COMMON-LISP" "SB-ALIEN")
                      '(("ALEXANDRIA" "ONCE-ONLY" "WITH-UNIQUE-NAMES"
                         "WHEN-LET" "REMOVEF"))
                      'nil
                      '("CANONICALIZE-SYMBOL-NAME-CASE" "FOREIGN-POINTER"
                        "POINTERP" "POINTER-EQ" "NULL-POINTER" "NULL-POINTER-P"
                        "INC-POINTER" "MAKE-POINTER" "POINTER-ADDRESS"
                        "%FOREIGN-ALLOC" "FOREIGN-FREE" "WITH-FOREIGN-POINTER"
                        "%FOREIGN-FUNCALL" "%FOREIGN-FUNCALL-POINTER"
                        "%FOREIGN-FUNCALL-VARARGS"
                        "%FOREIGN-FUNCALL-POINTER-VARARGS"
                        "%FOREIGN-TYPE-ALIGNMENT" "%FOREIGN-TYPE-SIZE"
                        "%LOAD-FOREIGN-LIBRARY" "%CLOSE-FOREIGN-LIBRARY"
                        "NATIVE-NAMESTRING" "%MEM-REF" "%MEM-SET"
                        "MAKE-SHAREABLE-BYTE-VECTOR"
                        "WITH-POINTER-TO-VECTOR-DATA" "%FOREIGN-SYMBOL-POINTER"
                        "%DEFCALLBACK" "%CALLBACK")
                      '("CFFI-SYS") 'nil 'nil (sb-c:source-location)) #<NULL-LEXENV>)

Condition: export cffi-sys::%foreign-funcall-pointer-varargs causes
           name-conflicts in #<package "CFFI"> between the following symbols:
             cffi-sys::%foreign-funcall-pointer-varargs,
             cffi::%foreign-funcall-pointer-varargs
See also:
  The ANSI Standard, Section 11.1.1.2.5