The script nt/admin/dist-build/build-deps-zips.py needs help. This is the script that I use to collect and package dependencies and sources for dependencies on Microsoft Windows, as part of releasing Emacs binaries for Windows. It is a python script that runs under MSYS2 MSYS console (not MinGW). Neither the version currently in the emacs-29 nor in the master branches will work for the given Emacs version without changes. The attached patch would make emacs-29 match what I am using locally. In addition to other changes, the patch reflects my current "transformation map" approach to deal with MSYS source package paths change, which seems to be happening quite a bit upstream. In case it may not be clear, my process is to run the script after updating local MSYS packages that are dependencies (optional or no), or edit and run it when Emacs' dependencies have changed. The patch reflects the script as I have been using it during the Emacs 29 release process. I'm sure there's general room for improvement (editing this script is literally my only python coding credit), I'm opening this bug report because bug#65188 (a packaging error preventing WEBP from working for people using the Windows binaries) has called attention to the importance of having additional eyes on build tooling (especially when it so far contains hard-coded lists of upstream deps). In GNU Emacs 29.1 (build 2, x86_64-w64-mingw32) of 2023-08-02 built on AVALON Windowing system distributor 'Microsoft Corp.', version 10.0.19045 System Description: Microsoft Windows 10 Home (v10.0.2009.19045.3324) Configured using: 'configure --with-modules --without-dbus --with-native-compilation=aot --without-compress-install --with-tree-sitter CFLAGS=-O2' Configured features: ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XPM ZLIB Important settings: value of $LANG: ENU locale-coding-system: cp1252 Major mode: Lisp Interaction 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 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 time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs comp comp-cstr warnings icons subr-x rx cl-seq cl-macs gv cl-extra help-mode bytecomp byte-compile cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars term/common-win 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 w32notify w32 lcms2 multi-tty make-network-process native-compile emacs) Memory information: ((conses 16 80415 13861) (symbols 48 7175 0) (strings 32 21269 1764) (string-bytes 1 617449) (vectors 16 16398) (vector-slots 8 334731 15794) (floats 8 29 46) (intervals 56 238 0) (buffers 984 10))