Inspecting the which-key source file shows many of the variable's `:package-version' information is in the form of a string instead of a cons cell with the car of the package name and the cdr of the string (See transient's '(transient . "0.1.0") :package-version for an example). This causes functions that expect a cons from the package version of a symbol to fail, as they try to access the cdr of the `custom-package-version' property of which-key symbols.
In GNU Emacs 30.0.90 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0) of 2024-09-05 built on localhost Repository revision: 54071b9cef287ac6826d67534d0c5c935bbca78c Repository branch: emacs-30 System Description: Gentoo Linux Configured using: 'configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --datarootdir=/usr/share --disable-silent-rules --docdir=/usr/share/doc/emacs-30.0.9999-r1 --htmldir=/usr/share/doc/emacs-30.0.9999-r1/html --libdir=/usr/lib64 --program-suffix=-emacs-30-vcs --includedir=/usr/include/emacs-30-vcs --infodir=/usr/share/info/emacs-30-vcs --localstatedir=/var --enable-locallisppath=/etc/emacs:/usr/share/emacs/site-lisp --without-compress-install --without-hesiod --without-pop --with-file-notification=inotify --with-pdumper --enable-acl --enable-xattr --with-dbus --without-modules --without-gameuser --with-libgmp --with-gpm --with-native-compilation=aot --without-kerberos --without-kerberos5 --with-lcms2 --with-xml2 --without-mailutils --without-selinux --with-sqlite3 --with-gnutls --without-libsystemd --with-threads --with-tree-sitter --without-wide-int --with-sound=alsa --with-zlib --with-pgtk --without-x --without-ns --with-toolkit-scroll-bars --without-gconf --without-gsettings --with-harfbuzz --with-libotf --with-m17n-flt --without-xwidgets --with-gif --with-jpeg --with-png --with-rsvg --with-tiff --without-webp --without-imagemagick --with-dumping=pdumper 'CFLAGS=-mtune=native -O2 -pipe -fno-fast-math -ffp-contract=off' CPPFLAGS= 'LDFLAGS=-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs'' Configured features: ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM HARFBUZZ JPEG LCMS2 LIBOTF LIBXML2 NATIVE_COMP NOTIFY INOTIFY PDUMPER PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER XIM GTK3 ZLIB Important settings: value of $LANG: C.UTF8 locale-coding-system: utf-8-unix Major mode: ELisp/l Minor modes in effect: tooltip-mode: t global-eldoc-mode: t eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t buffer-read-only: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils time-date subr-x misearch multi-isearch cl-loaddefs cl-lib jka-compr rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/pgtk-win pgtk-win term/common-win touch-screen pgtk-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads dbusbind inotify dynamic-setting font-render-setting cairo gtk pgtk lcms2 multi-tty move-toolbar make-network-process native-compile emacs) Memory information: ((conses 16 53793 18495) (symbols 48 5401 0) (strings 32 14397 2591) (string-bytes 1 476535) (vectors 16 9403) (vector-slots 8 132331 12225) (floats 8 26 789) (intervals 56 900 0) (buffers 992 14))