You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: status_nix.go
    path of file: ./repos/client/go/status
    
    the code of the file until where you have to start completion: // Copyright 2019 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.

//go:build dragonfly || freebsd || linux || netbsd || openbsd || solaris
// +build dragonfly freebsd linux netbsd openbsd solaris

package status

import (
	"stri
    
func osSpecific(mctx libkb.MetaContext, status *keybase1.FullStatus) error {
	// TODO: on darwin, install.KeybaseServiceStatus() is implemented to get pid for service and kbfs.
	// This is currently the best way to determine if KBFS is running, so other OS's should implement
	// it.
	productVersion, buildVersion, err := libkb.OSVersionAndBuild()
	if err != nil {
		mctx.Debug("Error determining OS version: %s", err)
	}
	status.ExtStatus.PlatformInfo.OsVersion = strings.Join([]string{productVersion, buildVersion}, "-")
	return nil
}