From d0b559a31d93d8c6c8bc7aa4242be6a627c576bf Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Fri, 18 Oct 2024 10:10:41 +0200
Subject: [PATCH] Improve version test in chkconfig

This now only loads the package until it has the version information
and then ends the package input.

This way, we do not need to care about package peculiarities (having
to be loaded after \documentclass or internal dependencies which, if
not given, might break the whole configuration, see #13112)
---
 lib/chkconfig.ltx | 12 +++++++++++-
 status.24x        |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/lib/chkconfig.ltx b/lib/chkconfig.ltx
index dbe99648df..bf0d410fd5 100644
--- a/lib/chkconfig.ltx
+++ b/lib/chkconfig.ltx
@@ -120,12 +120,22 @@
     #6
   \fi}
 
+
+% For the version test below, we need to load the tested package.
+% However, we are only interested in the version information, so
+% we redefine an internal method of \ProvidesPackage to quit
+% as soon as we have that information 
+\let\chk@pr@videpackage\@pr@videpackage
+\def\@pr@videpackage[#1]{\chk@pr@videpackage[#1]\endinput}
+
 % Tests whether an package is present and also adds the version to the package list
 \newcommand{\TestPackageAddVersion}[2][\default]{
    \def\default{#2}
    \def\package@version{}
-   % The actual test only works after the package has been loaded
    \IfFileExists{#1.sty}{%
+      % The actual test only works after the package has been loaded,
+      % but with the redefinition of \@pr@videpackage above, we quit
+      % as early as possible
       \RequirePackage{#1}%
       \protected@edef\package@@version{\csname ver@#1.sty\endcsname}%
       \protected@edef\package@version{\expandafter\@parse@version\package@@version//00\@nil}%
diff --git a/status.24x b/status.24x
index 0ad2ec7048..e206b09a08 100644
--- a/status.24x
+++ b/status.24x
@@ -108,3 +108,7 @@ What's new
 
 - Fix (only informal) check for hyphenation patterns in (re)configuration.
 
+- Improve check for package versions in (re)configuration. Particularly,
+  configuration does not break any longer if a sub-dependency of a 
+  tested package is missing (bug 13112),
+