Heroku Buildpack for Go

This is a Heroku buildpack for Go inspired by https://github.com/kr/heroku-buildpack-go but designed to use project and all dependencies committed into the projects' go directory.

Requirements

1. Your project must have a go directory that contains a src sub-directory. The src directory will be the project's GOPATH workspace containing the project's source files and the source files for all dependencies.
2. A .goinstall files that with one line of space-separated package names. This line will be passed as packages argument to the go install command.

Example

Given a the following project file layout:

.git
.gitignore
.goinstall
Procfile
go
  src
    myapp
      main.go

The .gitignore file should ignore items in the workspace bin and pkg directories as well as any embedded VCS directories.

--- .gitignore ---
# Go workspace
.bzr/
.hg/
bin/
pkg/

The .goinstall file content would contain the project's single package on one line:

--- .goinstall ---
myapp

The Profile would contain the heroku procecess type and command. See https://devcenter.heroku.com/articles/procfile#declaring-process-types for more information.

--- Profile ---
web: myapp

You would run the following command to create a heroku app that uses this buildpack:

$ heroku apps:create myapp --buildpack https://github.com/fuseelements/heroku-buildpack-go.git

To deploy the app to heroku:

$ git push heroku master

...
-----> Fetching custom git buildpack... done
-----> Go project app detected
-----> Installing Go 1.1.2... done
-----> Running: go install -tags heroku myapp
-----> Discovering process types
       Procfile declares types -> web

-----> Compiled slug size: 1.2MB
-----> Launching... done, v4
       http://myapp.herokuapp.com deployed to Heroku

Caveats

This buildpack adds a heroku build constraint, to enable heroku-specific code. See the App Engine build constraints article for details.