Checks the external command-line tools a module declares.
mix cli_deps.check MyApp.DepsPrints one line per tool and exits non-zero when any tool is missing or too old, which is what makes it usable as a CI step or a container-build gate — the point being to fail at build time rather than in a background job three days later.
The module can also be configured, so the argument can be omitted:
config :cli_deps, module: MyApp.DepsOptions
--quiet— print only failures.