# Cargo Graphmod A `cargo` subcommand for building Graphviz DOT files of dependency graphs between the modules of a package. ## Prerequisites * You need to install [Graphviz](https://graphviz.org/). ## Installing `cargo-graphmod` can be installed with `cargo install`: ```ignore cargo install cargo-graphmod ``` ## Usage ```ignore cd my_rust_package cargo graphmod | tred | dot -Tsvg > modules.svg ``` * Assumptions: * You should run the command from the root of your project (just above `src`). * By default, the package name (as defined in `Cargo.toml`) is supposed to be the directory name. Otherwise pass it as argument: `cargo graphmod a_different_name`. * Use `tred` if you want the transitive reduction of the graph. * You can export to [a lot of different formats](https://graphviz.org/docs/outputs/). ## Known limitations * Detects only dependencies introduced by the `use` keyword. * Detects only dependencies before the first `#[cfg(test)]` (in order to eliminate the dependencies from unit tests). * Works best when there is a bijection between modules and files / directories. ## License `cargo-graphmod` is released under the terms of the GPLv3 license. ## Cargo Graphmod's graph  ## Other example