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Denim is an alternative way to make and run Rust "scripts" with focus on minimal runtime overhead and ease of script development.

Features

• Tool set to create, build and tests scripts without interrupting callers.
• Full real-time output of cargo command runs.
• Support for Cargo.toml definitions within script source.
• Sensible script templates.
• Very low execution overhead after script was built.
• #! support.

Non-goals

• Run inline scripts - use cargo script(er) for this.
• Non Linux support.

Installation

You will need Rust installed (tested with 1.37.0). sh cargo install denim

Examples

Crate new minimal script and build it. sh denim new --bare hello_world

Crate new cotton prelude script and build it (this will take a moment). sh denim new hello_world

Now you can run the script as any other binary. Note that you can also run the script without building it first - the build will be done silently before program is executed. sh ./hello_world

After making changes to script it needs to be rebuild for them to take effect. Executing script directly (e.g. ./hello_world) will execute last built version until changed script builds successfully. sh denim build hello_world

Rebuild and run script after making changes. sh denim exec hello_world

Run tests. sh denim test hello_world

Check script. sh denim check hello_world