How to Migrate from Dep to Go Modules: A Step-by-Step Guide

Migrating from Dep to Go Modules: A Step-by-Step Guide

As you're planning to transition from Dep to Go modules, here's a comprehensive guide to effortlessly migrate your project:

1. Confirm Go Version Compatibility: Ensure you're running Go version 1.11 or later by executing go version.
2. Move Outside of GOPATH: Position your code outside of GOPATH or set export GO111MODULE=on.
3. Import Dependencies with go mod init: Run go mod init [module path] to transfer dependencies from Gopkg.lock.
4. Tidy Up with go mod tidy: This command eliminates redundant imports and includes indirect ones.
5. Delete Vendor Folder (Optional): Consider removing the vendor folder for obsolete Dep files by executing rm -rf vendor/ or moving it to the trash.
6. Test Build: Perform a test build using go build to verify functionality.
7. Remove Obsolete Files: Delete Gopkg.lock and Gopkg.toml files, as they're no longer needed in the Go module environment.

Go modules have successfully imported your dependencies from Dep using the Gopkg.lock file and generated a go.mod file, effectively managing your project's dependencies.

Preserving the Vendor Folder (Optional)

1. Copy Dependencies into Vendor: Run go mod vendor to transfer your dependencies to the vendor folder.
2. Build with Vendor: Use go build -mod=vendor to instruct Go build to utilize your vendor folder.

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