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use std::path::Path; use ops; use core::{PackageIdSpec, Package}; use util::{CargoResult, Config}; pub fn pkgid(manifest_path: &Path, spec: Option<&str>, config: &Config) -> CargoResult<PackageIdSpec> { let package = try!(Package::for_path(manifest_path, config)); let resolve = match try!(ops::load_pkg_lockfile(&package, config)) { Some(resolve) => resolve, None => bail!("a Cargo.lock must exist for this command"), }; let pkgid = match spec { Some(spec) => try!(PackageIdSpec::query_str(spec, resolve.iter())), None => package.package_id(), }; Ok(PackageIdSpec::from_package_id(pkgid)) }