Ramit Surana @ramitsurana /in/ramitsurana Dependency management in Golang 

Agenda About Me History Dependencies The Problem Golist to the rescue Gopkg Gopm Godep Glide GB 

About Me Open Source Contributor Gopher [email protected] 

History Started as Go a "systems language" The turning point for the project was the release of Go 1 in March 2012 This year Gophercon turns 3 years old. 

Dependencies Some file that you are trying to install in order to run another file. Whenever a class A uses another class or interface B, then A depends on B. In such a situation the class A is called the "dependant" and the class or interface B is called the "dependency". 

The Problem 

Golist cmd comes to the Rescue Go list uses –f to use flags $ go list -f '{{ .Imports }}' github.com/xxx/yyy $ go list -f '{{ .Deps }}' github.com/xxx/yyy $ list -f '{{ join .Imports "\n" }}' github.com/xxx/yyy 

Gopkg Built by Gustavo Niemeyer Provides stable APIs for the Go language Uses yaml package for building URL's URL is cleaner and shorter It redirects to the package documentation at godoc.org when opened with a browser Gopkg gopkg.in 

Gom Built by Yasuhiro Matsumoto. Uses a Gomfile to create test enviornment and groups for the project Could generate and use travis test by generating a travis-yml file. Gom github.com/mattn/gom 

Sample Gomfile 

Gvt Simple vendoring tool made for Go native vendoring Made by Filo Sottile No need to manually chase, copy or cleanup dependencies Gvt github.com/FiloSottile/gvt 

Gopm Built by Jiahua Chen Download packages by version,not git,hg,etc. It has a registry using which you can fetch the package. 

Gopm Registry 

Godep Most used tool for Managing dependencies in Golang Builds 2 directories vendor and Exports all the dependencies to JSON file Godep github.com/tools/godep 

Glide It supports tools likegit,bzr,hg,svn etc. Manage and install dependencies on- demand Dependencies for a project are listed in a glide.yaml file It creates a glide.lock file containing the complete dependency tree pinned to specific versions. 

How to use glide ? Installation $ curl https://glide.sh/get | sh Creating yaml file $ glide create Glide up $ glide up It creates the glide.lock file which locks the versions of the current state version of dependencies 

GB Proof of concept (PoC) replacement build tool Basically project to help you start a workflow for your project Workspace for all the Go code that is required to build your project. No environment variables to set 

Other Tools Govendor GPM (https://github.com/pote/gpm) GVM (https://github.com/pote/gvp) And many more …. 

Got Questions ? 

Thank You