Sass reimplemented in rust with nom (early stage). The "r" in the name might stand for the Rust programming language, for "re-implemented", or possibly for my name Rasmus.
To make compiling faster when rsass is used as a library crate (which
is probably the dominant use-case), I have made building the
command-line utility optional.
To build the commandline, define the
commandline feature when
cargo build --release --features=commandline
Sass language and implemetation status
The sass language is defined in its reference doc. This implementation is incomplete but getting there, if slowly.
If you want a working rust library for sass right now, you may be better of with sass-rs or sass-alt, which are rust wrappers around libsass. Another alternative is sassers which is another early stage pure rust implementation. That said, this implementation has reached a version where I find it usable for my personal projects, and the number of working tests are improving.