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In the example, the go.mod you can see the namespaces of all newly retrieved content pulled downstream and made available to your team ( ).Īnother file, go.sum, is maintained along with go.mod. When you run go get, the command downloads new dependencies to the module. Providing a go.mod file with the correct list of requirements is the recommended way to achieve reproducible builds in a scenario where our modules are being used.Ĭonsider this example go.mod: module /any-go-repo/come-together It has the ability to store all the requirements needed to ensure availability. In a shift from the constraints of the GOPATH model, older techniques like vendoring are now almost entirely redundant.
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The go.mod file is defined by a hierarchy of Go source files. Code is shared between Go projects similar to the way formats like maven, pypi, and npm. Go modules allows you to maintain multiple versions of related Go packages. In return, the argument passes packages downstream to a custom URL in Nexus Repository. This allows you to send GET requests from the client with the command go get. Versions 1.11 and later introduced features to access Go modules: the Module Download API. This providies for more stable packages in your CI environment. It offers a common toolset to build proxy servers to versioned Go dependencies, where you’re no longer dependent on a monolithic platform. Go modules is the standard package management system for Golang. To solve this problem, Go introduced the $ GOPROXY environment variable.
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The Go community realised that this has a number of negative impacts for any typical CI process as cloning repositories can be a time consuming process and was a barrier for developers working on isolated sub-project that did not require every dependency from the repository. This was done using a version control system where the Go command line would perform a full clone of all required dependencies. The Go programming language used a centralized monolithic git repositories to source Golang code as a means to simplify dependency management.
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