Why Does 'go build' Report 'package github.com/mkideal/cli not found', While 'go get' Successfully Retrieves the Module?

Go Module Retrieval Error: @latest Package Not Found

The error message "module github.com/mkideal/cli@latest found (v0.2.2), but does not contain package github.com/mkideal/cli" during the go build command indicates that the module found for a package does not actually include the package itself. This differs from go get, which can successfully retrieve the module.

Possible Causes:

One potential cause of this issue is a cache issue. Go maintains a cache of downloaded modules to improve retrieval speed. However, if the cache becomes corrupted or outdated, this error may occur.

Another possibility is that the module dependency is not correctly defined in the go.mod file. Ensure that the go.mod file in your project explicitly specifies the package dependencies.

Solution:

To resolve this error, try clearing the module cache by running the following command:

go clean -modcache

This command will remove all downloaded modules from the cache directory, forcing Go to retrieve them afresh.

Additional Troubleshooting:

If the above solution does not resolve the issue, you can try the following additional steps:

• Verify that your proxy settings are configured correctly by checking the environment variable GOPROXY.
• Check if the module you are trying to use is actually published and available on the remote source.
• Ensure that you have the latest version of Go installed by running go version.
• Try using go get -v ./... to manually retrieve all modules for the project.

If you continue to encounter this error, it is recommended to file an issue on the Go repository or seek assistance from the Go community forums.

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