go-mod:tldr:92404

The command "go mod tidy" is used in the Go programming language to automatically adjust the Go module's dependencies and clean up the module's go.mod and go.sum files.

When you develop a Go application, you typically define the external packages (dependencies) your application uses in the go.mod file. These dependencies can have their own dependencies as well, forming a dependency tree.

The "go mod tidy" command does a few things:

1. It scans the source code of your application to determine which packages are actually being used in your codebase. It uses static analysis to find imports, function calls, and type references.

2. Once it identifies the packages used, it checks the go.mod file for any missing, unnecessary, or unused dependencies. It also checks for any required versions specified in the file.

3. It removes any dependencies that are no longer required or never used, resulting in a cleaner go.mod file.

4. Additionally, it updates the go.sum file, which is a text file used to verify the integrity of downloaded Go modules.

Overall, "go mod tidy" helps keep your module's dependencies up to date and ensures that you only have the necessary dependencies declared in your go.mod file.