How to install Go package manually from source code
for example, you have the repo_url
at https://github.com/hello/example
You can do go get
manually by
$ cd $GOPATH
$ mkdir -p src/github.com/hello
$ cd src/github.com/hello
$ git clone https://github.com/hello/example.git
$ cd example
$ go install
the binary will install into $GOPATH/bin
if the go program of the repo_url depends on other go package. you have to manually get it and put it to correct path location too.