go get -u github.com/kardianos/govendor
# Setup your project.
cd "my project in GOPATH"
govendor init
# Add existing GOPATH files to vendor.
govendor add +external
# View your work.
govendor list
# Look at what is using a package
govendor list -v fmt
# Specify a specific version or revision to fetch
govendor fetch golang.org/x/net/context@a4bbce9fcae005b22ae5443f6af064d80a6f5a55
govendor fetch golang.org/x/net/context@v1 # Get latest v1.*.* tag or branch.
govendor fetch golang.org/x/net/context@=v1 # Get the tag or branch named "v1".
# Update a package to latest, given any prior version constraint
govendor fetch golang.org/x/net/context
# Format your repository only
govendor fmt +local
# Build everything in your repository only
govendor install +local
# Test your repository only
govendor test +local