Why Can't My Go Build Find the Required Revision?

"go build: Can't Find a Revision" Enigma Unveiled

Encountering the elusive "unknown revision" error while building a Go program can be perplexing. This message implies that the Go module system is unable to locate a specific revision of a module. To unravel this enigma, let's embark on a troubleshooting journey.

The Problem: Build Blocked by Unknown Revision

You diligently created a repo with a go.mod/go.sum on Computer A and pulled it with the same files on Computer B. However, upon attempting to build the program, you are met with a cryptic error message:

go: github.ibm.com/kms/[email protected]: unknown revision v0.1.5

This error suggests that the Go module system cannot locate the specified revision of github.ibm.com/kms/key-protect-client.

Possible Solutions for Private Repositories:

1. Configure Git SSH:

   a. Specify your git access token in your .gitconfig file:

   [credential]
   helper = store --file=.git-credentials
   [core]
   sshCommand = ssh -i ~/.ssh/id_rsa-github

   b. Enter your GitHub token in .git-credentials:

   https://github.com <token>

   c. Run the following command:

   git config --global url."ssh://git@github.com".insteadOf "https://github.com"

2. Check Repository Permissions:

   Ensure that your GitHub account has the necessary permissions to access the private repository containing the required module. Verify if you are a collaborator or have the appropriate permissions to access the repo and its contents.

By implementing these solutions, you can potentially rectify the "unknown revision" error and get your Go build back on track. Remember, debugging module system issues can require persistence and careful examination of configuration and permissions.

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