Function load_profiled 

pub fn load_profiled(
    dir: &Path,
    profile: Option<&Profile>,
    sets: &[String],
) -> Result<Spec>

Reads the spec in dir with a profile’s spec merged in (checked against the spec first: see profile::Profile::check), then -s key=value overrides.

Errors

Error, as load_with, or a profile that names what the spec doesn’t have.