An alternative to
lein deps :tree that uses Graphviz to present
a dependency diagram of all the artifacts (Maven-speak for "libraries") in your project.
Here's an example of a relatively small project:
A single artifact may be
a transitive dependency of multiple other artifacts.
vizdeps can show this (
lein deps :tree doesn't), and will highlight in red any dependencies
with a version mismatch.
This can make it much easier to identify version conflicts and provide the best
exclusions and overrides.
These dependency graphs can get large; using the
--vertical option may make large
trees more readable.
To keep the graph from getting any more cluttered, the
is treated specially (just the dependency from the project root is shown).
--prune option is used when managing version conflicts; it removes uninteresting artifacts.
Those that remain either have a version conflict (such as
commons-codec, below) or
transitively depend on an artifact with such a conflict:
Often, you are struck trying to track down why a specific artifact is included.
In large projects, the Graphviz chart can become difficult to read.
--focus option to limit which artifacts are shown.
lein vizdeps --vertical --focus jackson-core:
[walmartlabs/vizdeps "0.1.6"] into the
:plugins vector of your
The plugin makes use of the
dot command,part of Graphviz,
which must be installed.
On OS X, Graphviz can be installed using Homebrew:
brew install graphviz
On other platforms, Graphviz can be downloaded.
Usage: lein vizdeps [options] Options: -d, --dev Include :dev dependencies in the graph. -f, --focus ARTIFACT Excludes artifacts whose names do not match a supplied value. Repeatable. -H, --highlight ARTIFACT Highlight the artifact, and any dependencies to it, in blue. Repeatable. -n, --no-view If given, the image will not be opened after creation. -o, --output-file FILE target/dependencies.pdf Output file path. Extension chooses format: pdf or png. -p, --prune Exclude artifacts and dependencies that do not involve version conflicts. -s, --save-dot Save the generated GraphViz DOT file well as the output file. -v, --vertical Use a vertical, not horizontal, layout. -h, --help This usage summary.
--highlight option can be repeated; any artifact that contains any of the provided strings will be highlighted.
--focus option allows you to mark some dependencies for inclusion; every artifact that does not match, or does not
transitively depend on a marked artifact, is excluded.
This is very useful when trying to work out how a specific artifact is transitively included.
Usage: lein vizconflicts [options] Options: -o, --output-file FILE target/conflicts.pdf Output file path. Extension chooses format: pdf or png. -X, --exclude NAME Exclude any project whose name matches the value. Repeatable. -a, --artifact NAME If given, then only artifacts whose name matches are included. Repeatable. -s, --save-dot Save the generated GraphViz DOT file well as the output file. -n, --no-view If given, the image will not be opened after creation. -h, --help This usage summary.
vizconflicts is used in concert with lein-sub to analyze
dependencies between and across a multi-module project.
visconflicts identifies all artifacts in use across all sub-modules, and identifies where different
versions of the same artifact are used.
The generated document includes a diagram for each artifact that has such version conflicts.
For very large projects, the resulting diagram can be very large (even overwhelming Graphviz's
ability to create a legible layout).
Projects can be excluded, using the
Alternately, you can focus on a subset of conflicting artifacts using the
When different versions of the same artifact are in use, the output document will include a diagram of how that artifact is used across the different modules:
The lines in each chart identify dependencies; solid lines are explicit dependencies, dotted lines are transitive dependencies.
When one version of the artifact is the majority (based on total number of dependencies), it is highlighted in blue (and other versions are drawn in red).
Copyright © 2016-2017 Walmartlabs
Distributed under the Apache Software License 2.0.