bzlmod use local tools:register_built_pkgconfig_toolchain = False,register_built_tools = False,register_default_tools = True,

[kekxv]

How can I use native tools without compiling them?

when WORKSPACE

load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
# This sets up some common toolchains for building targets. For more details, please see
# https://bazelbuild.github.io/rules_foreign_cc/0.10.1/flatten.html#rules_foreign_cc_dependencies
rules_foreign_cc_dependencies(
    register_built_pkgconfig_toolchain = False,
    register_built_tools = False,
    register_default_tools = True,
    register_preinstalled_tools = True,
    register_toolchains = True,
)

[jsharpe]

Support is missing in bzlmod to configure the toolchains; the extension API for this needs designing.