On Tue, Mar 29, 2022 at 05:48:47PM -0400, Anadon wrote:
>  (define-public utfcpp
>    (package
>      (name "utfcpp")
> -    (version "2.3.5")
> +    (version "3.2.1")

Thanks!

I turned it into a Git commit (attached as a patch) and built utfcpp 3.2.1
successfully.

I noticed that at least one of the handful of packages that depend on
utfcpp, mkvtoolnix, doesn't build with this update:

------
[...]
starting phase `build'
            CC lib/librmff/rmff.c
           CXX src/mpegparser/MPEGVideoBuffer.cpp
           CXX src/common/xml/xml.cpp
            CC lib/librmff/mb_file_io.c
            AR lib/librmff/librmff.a
        RANLIB lib/librmff/librmff.a
           CXX lib/avilib-0.6.10/xio.cpp
           CXX src/mpegparser/M2VParser.cpp
            CC lib/avilib-0.6.10/avimisc.c
            CC lib/avilib-0.6.10/avilib.c
            AR lib/avilib-0.6.10/libavi.a
        RANLIB lib/avilib-0.6.10/libavi.a
           CXX src/common/xml/ebml_tags_converter.cpp
           CXX src/mpegparser/CircBuffer.cpp
           CXX src/common/xml/ebml_segmentinfo_converter.cpp
            AR src/mpegparser/libmpegparser.a
        RANLIB src/mpegparser/libmpegparser.a
           CXX src/common/xml/ebml_converter.cpp
           CXX src/common/xml/ebml_chapters_converter.cpp
           CXX src/common/tags/vorbis.cpp
           CXX src/common/tags/tags.cpp
           CXX src/common/strings/utf8.cpp
src/common/strings/utf8.cpp:21:10: fatal error: utf8.h: No such file or directory
   21 | #include <utf8.h>
      |          ^~~~~~~~
compilation terminated.
error: in phase 'build': uncaught exception:
%exception #<&invoke-error program: "rake" arguments: ("-j" "4") exit-status: 1 term-signal: #f stop-signal: #f> 
phase `build' failed after 47.3 seconds
command "rake" "-j" "4" failed with status 1
builder for `/gnu/store/n4jp4915g90c0f89njnlljhfd75k5y0g-mkvtoolnix-52.0.0.drv' failed with exit code 1
build of /gnu/store/n4jp4915g90c0f89njnlljhfd75k5y0g-mkvtoolnix-52.0.0.drv failed
View build log at '/var/log/guix/drvs/n4/jp4915g90c0f89njnlljhfd75k5y0g-mkvtoolnix-52.0.0.drv.gz'.
guix build: error: build of `/gnu/store/n4jp4915g90c0f89njnlljhfd75k5y0g-mkvtoolnix-52.0.0.drv' failed
------

One can check full list of packages that depend on utfcpp like this:

------
$ guix refresh --list-dependent utfcpp 
Building the following 6 packages would ensure 8 dependent packages are rebuilt: emacs-flycheck-ledger@0.5 emacs-ledger-mode@4.0.0 warzone2100@4.0.1 osmium-tool@1.14.0 osm2pgsql@1.5.1 mkvtoolnix@52.0.0
------