What command did you run? And where did you run it? And where is the code you posted located (filename and path)?

I guess there is something wrong with my go program?

There must be something wrong with your Go toolchain and/or your environment. I suggest you remove everything and reinstall Go, that may fix your issue.

If you need help, please see the Questions wiki page; it has a list of good places for asking questions (we only use the github issue tracker for tracking confirmed bugs, and I think the issue here is in your environment).

I'm closing this, but we can always re-open later if it turns out this was a Go bug.

I hope that's not your password, but if it is, you should change it quick :(

Hi, I tried to reinstall Go, bu the error still there.
Even if it's just a simple hello world program.

package main

import ("fmt"
)

func main() {
	fmt.Printf("Hello, world.\n")
}

Even if it's just a simple hello world program.

According to your picture, you build your program with "Visual Studio Code". But this issue list does not for "Visual Studio Code" support. You have to show the command that you run ("go build" or whatever) to get that error message. Did you read https://golang.org/doc/code.html ? Did you follow what is suggested there before trying to use "Visual Studio Code" ?

Alex

Here's my result:

The error message is the same, that "." package cannot be found.

@ankanch I tried reproducing your error, and I cannot. Do you have test.go file in d:\onedrive\projects\project-go\practice ? What is the contents of test.go file?

Alex

@alexbrainman Here's my practice folder and contents of test.go`.

BTW,I have resolved this problem by delete practice folder and recreate it as well as test.go.
That's wired.

Is the "." package stands for current directory?

Thanks anyway.

I get the same error on ubuntu 16.04 using liteide and go 1.9.1

I had this issue as well (Windows 10 & go1.10). The error comes from not setting up your GOPATH in the environment variables See here in the installation docs and [here](https://github.com/golang/go/wiki/SettingGOPATH#windows for setting up your GOPATH).
To confirm that you have set up your workspace directory correctly enter the directory using cd path\to\workspace and running go list

Hello, I know this issue has been closed, but I have encountered the same problem. I found that I cannot compile and run any go code in the OneDrive folder, but when I moved to another path, the problem solved. From go version go1.10.1 windows/amd64

$ cd C:\Users\mohan\OneDrive\sandbox  && go run run.go
package main: cannot find package "." in:
        C:\Users\mohan\OneDrive\sandbox

$ cp run.go C:\\tmp\\run.go && go run C:\\tmp\\run.go
Hello World!

@mohanson from the comment above:

The error comes from not setting up your GOPATH in the environment variables

is GOPATH set in your environment? If not, have you tried setting it?

@ALTree I did not set GOPATH. The Golang automatically creates a new folder named "go" in my user path, so since switch to the v1.10.x I will no longer set it. I just tried set GOPATH=MY_USER_PATH/go, the problem has not been solved.

@ALTree I found Golang doesn't think the Onedrive folder(and any sub folder in it) is a directory, the IsDir() function returns False:

package main

import (
	"log"
	"os"
)

func main() {
	f, err := os.Open("C:\\Users\\mohan\\OneDrive\\sandbox")
	if err != nil {
		log.Fatalln(err)
	}
	i, err := f.Stat()
	if err != nil {
		log.Fatalln(err)
	}
	log.Println(i.IsDir()) 
        // 2018/04/09 11:34:37 false
}

But in python: python -c "import os.path; print(os.path.isdir('C:\\Users\\mohan\\OneDrive\\sandbox'))" returns True.

I think this may be one of the reasons for the problem.

/cc @alexbrainman I'm almost certain this is a duplicate of another OneDrive related issue.

/cc @jessfraz do you know anyone inside Microsoft who might be able to assist.

#22579 (os: IsDir doesn't work with Windows OneDrive), possibly?

If that's the case, it should be fixed on tip (to be go1.11).

Duplicate of #22579

Closing and locking to ensure debate is concentrated on #22579