I’ve received the following error when attempting to install 1) zarith 2) graphics from opam:
#=== ERROR while compiling conf-pkg-config.4 ==================================#
context 2.5.0 | macos/arm64 | ocaml-base-compiler.5.4.0 | https://opam.ocaml.org#198be18bb88a0b56489f5a35ddf3b455080fe905
path ~/.opam/due/.opam-switch/build/conf-pkg-config.4
command ~/.opam/opam-init/hooks/sandbox.sh build pkgconf --version
exit-code 10
env-file ~/.opam/log/conf-pkg-config-62222-11b4a5.env
output-file ~/.opam/log/conf-pkg-config-62222-11b4a5.out
output
[ERROR] Command not found: pkgconf
Thanks for any help.