How deeply does Go in Practice, Second Edition cover go get?

Explains package retrieval, version selection, updates, transitive dependencies, and cleanup, but not deployment configuration.

Go get

As explained in Go in Practice, Second Edition

go get is a Go command that adds or retrieves package dependencies for a module.

go get adds or retrieves external package dependencies for a Go project. It accepts an individual package path or ./..., which scans the codebase for referenced external packages. section 1.2.4

Use go get for common dependency-management tasks:

Run go get PACKAGE_PATH to retrieve one package, such as golang.org/x/net/html. section 1.2.4
Run go get ./... to walk the codebase and retrieve referenced external packages. section 1.2.4
Run go get PACKAGE_PATH@VERSION to select a semantic-version tag rather than the latest version. section 6.1.3
Run go get -u to update all dependencies, or go get -u PACKAGE_PATH to update one; use go mod tidy afterward. section 6.1.3
Use go mod graph to inspect updated versions and transitive dependencies, and add -t when test packages matter. section 6.1.3

Adding an external package

Initialize the project with go mod init, import an external package such as golang.org/x/net/html, then run go get ./.... Go retrieves the package through its version-control system and makes it available to the workspace; the dependency is recorded in go.mod. section 1.2.4

$ go get ./...

Inspect the command form used to retrieve every external package referenced throughout a codebase. section 1.2.4

How Go in Practice, Second Edition covers it

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Related concepts

go moduleconfigures · A Go module is a versioned collection of related Go packages defined by a go.mod file and managed as a unit for dependency resolution and builds.
resource taguses · A resource tag is metadata, commonly a key-value label, attached to a resource to identify, classify, organize, filter, or track it.

This explainer was generated by Manning's knowledge graph from the text of Go in Practice, Second Edition. The section links point to the parts of the book it draws on.