Subject: [bug#79169] Request for merging "c++-team" branch

From: Greg Hogan <[email-masked]>
Date: Mon, 4 Aug 2025 12:33:36 -0400

Hi,

The last c++-team branch updated the CMake build system and was kept
free of library updates (other than the CMake dependency jsoncpp).
This branch collects those library updates and currently includes
  abseil-cpp 20250512.1 (2825 dependents)
  boost and boost-static 1.88 (7379 dependents)
  googletest 1.17.0 (6546 dependents)
  libzip 1.11.4 (3369 dependents)
  valgrind and valgrind/pinned 3.25.1 (1547 dependents)
for a total of 7654 dependent packages (guix refresh -l abseil-cpp
boost boost-static googletest libzip valgrind -e '(@@ (gnu packages
valgrind) valgrind/pinned)').

Greg