// matches the query pattern.
	//
	// We track this module separately from pkgMods because, all else equal, we
	// prefer to match a query to a package rather than just a module. Also,
	// unlike the modules in pkgMods, this module does not inherently exclude
	// any other module in pkgMods.
	mod module.Version

	err error
}

// errSet returns a pathSet containing the given error.

	pkgMods, modOnly, err := QueryPattern(ctx, pattern, query, current, allowed)

	if len(pkgMods) == 0 && err == nil {
		replacement := Replacement(modOnly.Mod)
		return nil, &PackageNotInModuleError{
			Mod:         modOnly.Mod,
			Replacement: replacement,
			Query:       query,
			Pattern:     pattern,
		}
	}

	return pkgMods, err
}