#include <format> file not found

[johnblommers]

Follows are the steps I took to build vv:

sudo apt install libopenexr-dev \
                 libheif-dev \
                 liblcms2-dev \
                 libraw-dev \
                 libsixel-dev \
                 libfmt-dev
git clone https://github.com/wolfpld/vv.git
cd vv
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

But

[  4%] Built target TracyClient
[  6%] Building CXX object CMakeFiles/mcoreutil.dir/src/util/Callstack.cpp.o
/home/johnb/Applications/vv/src/util/Callstack.cpp:2:10: fatal error: format: No such file or directory
    2 | #include <format>
      |          ^~~~~~~~
compilation terminated.
gmake[2]: *** [CMakeFiles/mcoreutil.dir/build.make:121: CMakeFiles/mcoreutil.dir/src/util/Callstack.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:133: CMakeFiles/mcoreutil.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2

What am I missing?

[wolfpld]

C++20 compliant compiler.