Go modules are the latest and official way of managing dependencies. Please read this before installing dependencies.
Once per project, create go.mod (assume our project name is nlp)
go mod init 353solutions.com/go/nlp
Note: If you're under GOPATH (run go env GOPATH to check), you'll need to
set GO111MODULE environment variable.
export GO111MODULE=on
To install a package run:
go get github.com/pkg/errors
To install a specific version run:
go get github.com/pkg/[email protected]
To have go mod scan your code and update go.mod run:
go mod tidy
go get uses git (or hg, svn ...) to fetch packages. This means you can
have an internal company git server and install packages from it. You can use
Athens,
go-import-redirect, Go
Registry and others
to have custom URLs. If you don't have a git server, you can use the replace
directive in go.mod to install packages from a local directory.
module nlp
require (
github.com/pkg/errors v0.8.1
)
replace github.com/pkg/errors => /path/to/errors
You can also choose to vendor your dependencies. Run go mod vendor and then a
vendor directory will be created with all your dependencies. This mean you're
not relying on internet connection to build. To use the vendor directory, pass
-mod=vendor to all go commands (e.g. go build -mod=vendor) or set it in
GOFLAGS environment variable (e.g. export GOFLAGS="-mod=vendor")