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sbt plugin to create a dependency graph for your project
Scala

README.md

sbt-dependency-graph

Visualize your project's dependencies.

How To Use

Since sbt-dependency-graph is an informational tool rather than one that changes your build, you will more than likely wish to install it as a global plugin so that you can use it in any SBT project without the need to explicitly add it to each one. To do this, add the plugin dependency to ~/.sbt/0.13/plugins/plugins.sbt:

addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.7.5")

Then, apply the plugin's settings in ~/.sbt/0.13/global.sbt, the global build configuration, by adding the following line:

net.virtualvoid.sbt.graph.Plugin.graphSettings

Note, that sbt-dependency-graph is not an AutoPlugin yet (until #51 is fixed), so adding the above line to your global or project configuration is mandatory.

Tasks

  • dependency-graph: Shows an ASCII graph of the project's dependencies on the sbt console
  • dependency-graph-ml: Generates a .graphml file with the project's dependencies to target/dependencies-<config>.graphml. Use e.g. yEd to format the graph to your needs.
  • dependency-dot: Generates a .dot file with the project's dependencies to target/dependencies-<config>.dot. Use graphviz to render it to your preferred graphic format.
  • dependency-tree: Shows an ASCII tree representation of the project's dependencies
  • what-depends-on <organization> <module> <revision>: Find out what depends on an artifact. Shows a reverse dependency tree for the selected module.
  • dependency-license-info: show dependencies grouped by declared license
  • ivy-report: let's ivy generate the resolution report for you project. Use show ivy-report for the filename of the generated report

All tasks can be scoped to a configuration to get the report for a specific configuration. test:dependency-graph, for example, prints the dependencies in the test configuration. If you don't specify any configuration, compile is assumed as usual.

Configuration settings

  • filterScalaLibrary: Defines if the scala library should be excluded from the output of the dependency-* functions. If true, instead of showing the dependency "[S]" is appended to the artifact name. Set to false if you want the scala-library dependency to appear in the output. (default: true)
  • dependencyGraphMLFile: a setting which allows configuring the output path of dependency-graph-ml.
  • dependencyDotFile: a setting which allows configuring the output path of dependency-dot.
  • dependencyDotHeader: a setting to customize the header of the dot file (e.g. to set your preferred node shapes).
  • dependencyDotNodeLabel: defines the format of a node label (default set to [organisation]<BR/><B>[name]</B><BR/>[version])

E.g. in build.sbt you can change configuration settings like this:

filterScalaLibrary := false // include scala library in output

dependencyDotFile := file("dependencies.dot") //render dot file to `./dependencies.dot`

Standalone usage

You can use the project without sbt as well by either depending on the library and calling IvyGraphMLDependencies.saveAsGraphML(IvyGraphMLDependencies.graph(reportFile), outputFile) or by just getting the binary and calling it like scala sbt-dependency-graph-0.7.5.jar <ivy-report-xml-path> <target-path>.

Inner Workings

sbt/Ivy's update task create ivy-report xml-files inside .ivy2/cache (in sbt 0.12.1: <project-dir>/target/resolution-cache/reports/<project-id>). You can just open them with your browser to look at the dependency report for your project. This project takes the report xml of your project and creates a graphml file out of it. (BTW, ivy can create graphml files itself, but since I didn't want to spend to much time getting sbt to call into Ivy to create graphs, I went with the easy way here)

Known issues

  • #19: There's an unfixed bug with graph generation for particular layouts. Workaround: Use dependency-tree instead of dependency-graph.
  • #12: Excluded dependencies will be shown in the graph in sbt < 0.12, works with later versions

Credits

  • Matt Russell (@mdr) for contributing the ASCII graph layout.
  • berleon (@berleon) for contributing rendering to dot.

License

Copyright (c) 2011, 2012 Johannes Rudolph

Published under the Apache License 2.0.

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