How to Resolve the \'hg\' Executable Not Found Error When Using `go get`?

Getting Remote Go Packages: Resolving "hg" Executable Not Found Error

In the Golang tutorial, you are instructed to use go get to retrieve remote packages. However, some packages may be under version control systems other than Git, such as Mercurial (hg).

The "executable file not found" error you encountered indicates that you need to install Hg to clone packages under this version control system. Here's how to proceed:

1. Install Mercurial:

   • For Windows: Download and install Hg from .
   • For macOS/Linux: Use your package manager (e.g., brew install mercurial on macOS).

2. Ensure Hg is in the PATH:

   • Verify that Hg is properly installed and added to your system's PATH environment variable.
   • On Windows, open "Control Panel" -> "System and Security" -> "System" -> "Advanced System Settings" -> "Environment Variables" and add the Hg installation directory (e.g., C:Program FilesMercurial) to the PATH.

3. Retry go get:

   • Once Hg is installed and in the PATH, try running go get code.google.com/p/go.example/hello again.

4. Confirm Package Installation:

   • After successful cloning, the package should be installed under your GOPATH. Navigate to the src directory within your GOPATH and verify that the package files are present (e.g., code.google.com/p/go.example).

5. Use the Package:

   • You can now import and use the remote package in your Go code. For example, you can import the helloworld package from the code.google.com repository:

     <code class="go">import (
       "fmt"
       "code.google.com/p/go.example/helloworld"
     )
     
     func main() {
       fmt.Println(helloworld.Hello())
     }</code>

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