Which Packages Can I Import in the Go Playground?

Packages Importable in the Go Playground

When working with the Go Playground at http://play.golang.org, users may encounter a limited ability to import certain packages. This guide aims to clarify which packages are admissible within the Playground environment and provide a solution to accommodate experimental and supplemental libraries.

Limited Package Accessibility

The Playground imposes specific restrictions on importable packages:

• Standard Library Packages: The Playground provides access to most packages under the standard library (golang.org/src/).
• Non-Standard Packages: Packages outside the standard library are generally not importable, including those categorized under "Other" on the official packages page.

Exceptions to the Rule

The Playground allows importing selected non-standard packages:

• Base Packages: Non-standard packages that meet specific criteria may be importable. These are typically base packages (without subdirectories), such as "github.com/myorg/mypkg".
• Other Experimental Packages: A limited number of experimental packages may be available on a case-by-case basis. Consult the Playground documentation for updates.

Recommendations

To avoid import errors in the Playground:

• Refer to the Packages page for a comprehensive list of importable standard library packages.
• Explore the Playground documentation to stay informed about support for experimental packages.

• For non-standard packages not meeting the base package criteria or not explicitly allowed in the Playground, alternative options include:

  • Forking and modifying the Playground codebase.
  • Using a local development environment.

Standard Library Test Case

You can test the Playground's ability to import standard library packages with the following code:

package main

import (
    // Imports all standard library packages.
    _ "archive/tar"
    _ "archive/zip"
    _ "bufio"
    _ "bytes"

    // ... (Continues through the entire standard library, add as many packages as needed.)
)

func main() {
    println("ok")
}

Note that despite the exhaustive import list, not all packages can be effectively utilized due to limitations within the Playground environment.

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