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sbt-package-dist is a plugin for sbt 0.11 which attempts to codify best practices for building, packaging, and publishing libraries and servers. It adds the following features:

  • a "package-dist" task for creating a deployable distribution of a server, including an executable jar and a file
  • support for a default set of repos where most of the common libraries are
  • the ability to send all repo requests through a proxy, for highly firewalled environments
  • the ability to publish into an svn repo (using ivy-svn)
  • commands to make it easier to follow semantic versioning for releases, including tagging releases in git

General Usage

Getting sbt-package-dist

See for information on adding plugins. In general, you'll need to add the following to your project/plugins.sbt file:

addSbtPlugin("com.twitter" % "sbt-package-dist" % "1.0.0")

Mixing in sbt-package-dist

sbt-package-dist is a collection of many different mixins. Each mixin provides a set of SBT Settings, Tasks and/or Commands that your project can use. The way an SBT project "uses" these extensions is by adding them to the project's settings map. There are two ways to include settings into your build definition.

Using an .sbt file

If you want to include all of the settings:

import com.twitter.sbt._

seq(StandardProject.newSettings: _*)

If you want to include only a specific mixin's settings, you can specify just the one(s) you want:

import com.twitter.sbt._

seq(GitProject.gitSettings: _*)

Using a .scala build definition

In your scala build definition, just extend the settings of any defined projects:

import sbt._
import Keys._
import com.twitter.sbt._

object MyProject extends Build {
  lazy val root = Project(
    id = "my-project",
    base = file("."),
    settings = StandardProject.newSettings



Standard project provides the following plugins you can extend:


Aggregates a "reasonable" set of mixins into a single plugin. Currently included are:

  • DefaultRepos
  • ArtifactoryPublisher
  • SubversionPublisher
  • GitProject
  • BuildProperties
  • PublishSourcesAndJavadocs
  • PackageDist
  • VersionManagement
  • ReleaseManagement


Sets up a default set of maven repos used in most Twitter projects. If the SBT_PROXY_REPO environment variable is set, it uses a proxy repo instead. Using a proxy repo may be useful when building in an environment where sbt can't access the internet.


Publishes artifacts to an "artifactory" (optionally with credentials) instead of the default publishing target. This mixin only takes effect if artifactoryResolver is set.


Publishes artifacts to a subversion repo, if one is set. Settings of interest are:

  • subversion-prefs-file - your credentials go in this file
  • subversion-username - if you want to hardcode this
  • subversion-password - if you're naughty and want to put this in source control
  • subversion-repository - the url of your svn repo


Adds various settings and commands for dealing with git-based projects, including:

  • git-is-repository
  • git-project-sha
  • git-last-commits-count
  • git-last-commits
  • git-branch-name
  • git-commit-message
  • git-commit
  • git-tag
  • git-tag-name


Uses GitProject to write a file containing information about the environment used to produce a jar. Includes the name, version, build name (usually a timestamp), git revision, git branch, and the last few commits.


Just works around a bug in sbt to prevent scaladoc from blowing up.


Generates a deployable zip file of a server, containing:

  • the executable jar (with manifest classpath and
  • any dependencies, in lib/
  • any scripts, in scripts/
  • any config files, in config/


Provides commands to modify the current project version, including:

  • version-bump-major - tick major rev by 1, reset minor/patch to zero
  • version-bump-minor - tick minor rev by 1, reset patch to zero
  • version-bump-patch - tick patch by 1
  • version-to-snapshot - add -SNAPSHOT to the current version
  • version-to-stable - remove -SNAPSHOT from the current version
  • version-set - set to an arbitrary version

These commands look in build.sbt and project/*.scala files for a current version string and replace it with the updated version. After this is done, the command reloads the project, which should now have the updated version.


Provides commands for publishing a release. The primary command is release- publish, which does the following in sequence:

  • release-ready - Make sure the working directory is clean, we don't depend on snapshots, and we haven't already tagged this release.
  • version-to-stable - Strip the snapshot version.
  • publish-local
  • publish
  • git-commit - Check in our version number changes.
  • git-tag - Add a tag for the current version.
  • version-bump-patch - Bump our version by 1.
  • version-to-snapshot - Restore the version to snapshot.
  • git-commit - Check in these changes.
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