rox-cli 0.2.0

A YAML-Defined CLI for Dev Tools
rox-cli-0.2.0 is not a library.

Rox CI Checks

Composable build tool inspired by Nox, Make & cargo-make

Rox gives you the ability to build your own devtools CLI using YAML files. Tasks and Pipelines are dynamically added to the CLI at runtime. It has fast startup times and full cross-platform compabitility. Being both performant and flexible makes it easier for dev teams to standardize their workflows without writing endless "glue" scripts.

The subcommands and their help messages are automatically populated at runtime from the name and description of each target.

See the roxfile.yml for an idea of the planned end-state of syntax and functionality! This is also the Roxfile used for this repo.


Until a proper release pipeline is set up, you'll need cargo to get things up and running. Once you've got that installed, clone this repo and run cargo build.

To play around further, you can either run cargo run help or execute the built binary within the target/debug/ dir.

Roxfile Syntax

Version Requirements

Version Requirements are used to ensure that any required CLI tool matches your specified version requirements.

  - command: "docker version --format {{.Client.Version}}" # Output: 20.10.23
    minimum_version: "20.10.7"
    maximum_version: "21.0.0"

  - command: "python --version" # Output: Python 3.9.13
    # Splits on spaces and grabs the last output token as the Version
    split: true 
    minimum_version: "3.8"

File Requirements

File Requirements ensure that certain expected files are present.

  - path: "Cargo.toml" 
  - path: ".env"
    create_if_not_exists: true # Create the file if it doesn't exist, as opposed to throwing an error


Templates allow you to specify templated commands that can be reused by tasks. Values are injected positionally. These are intended to facilitate code reuse and uniformity across similar but different commands.

  - name: docker_build
    command: "docker build {path} -t rox:{image_tag}"
    symbols: ["{path}", "{image_tag}"]


Tasks are discrete units of execution. They're intended to be single shell commands that can then be composed via pipelines. They are also able to leverage templates by specifying one with uses and injecting values with values.

  - name: build-prod
    description: "Build the application dockerfile"
    uses: docker_build
    values: [".", "latest"]
  - name: "watch-run"
    description: "Run the application, restarting on file changes"
    command: "cargo watch -c -x run"


Pipelines are the canonical way to chain together multiple tasks into a single execution unit. They also support parallel execution but it is up to the user to ensure that the tasks can be safely executed in parallel.

  - name: example-pipeline
    description: Composes a few tasks
    tasks: ["task-a", "task-b", "task-c"]

Upcoming Features

  • Command Templates
  • Supports Monorepos via workdir specification
  • Multiple Platform Builds
  • Support Definitions in Multiple Files
  • Thorough Testing