Golang：安装目录错误？

Question

我有错误：go install: no install location for directory /Users/xwilly/Dropbox/go/project/src outside GOPATH 我在 OS X 上使用 go 1.1 版。我可以构建和运行，但不能安装包。我的环境：GOPATH=/Users/xwilly/Dropbox/go/projectPATH=/Library/Frameworks/Python.framework/Versions/2.7/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/go/bin:/Users/xwilly/Dropbox/go/project/bin项目树：/Users/xwilly/Dropbox/go/projectbinpkgsrc我可以无误地构建：..:src xwilly$ go build test.go ..:src xwilly$ go install test.gogo install: no install location for directory /Users/xwilly/Dropbox/go/project/src outside GOPATH这是一个简单的例子：xwilly$ cat test.go package mainimport (    "fmt")func main() {    fmt.Println("Bonjour")}xwilly$ go run test.go Bonjourxwilly$ go install test.go go install: no install location for directory /Users/xwilly/Dropbox/go/project/src/learning outside GOPATH