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CONTRIBUTING.md
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# Contributing to New Mars
# Contributing to Ares
Below are guidelines for contributions to Ares. For information on building and hacking on ares, see [DEVELOPERS.md](DEVELOPERS.md).
## Style
Hoon should generally follow the kernel style.
Hoon should generally follow the [Hoon Style Guide](https://docs.urbit.org/language/hoon/guides/style).
Rust code must pass `cargo fmt --check`.
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## PR reviews
Don't merge without them, don't forget to do them for others.

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DEVELOPERS.md Normal file
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# Developing Ares
## Nix
Ares uses a Nix developer shell to set up the environment for rust builds. Please [Install Nix](https://nixos.org/download#download-nix).
With Nix installed, you can run
```bash
nix develop
```
in `rust/` or any subdirectory, and you will be dropped into a BASH shell with the build environment set up. This will provide proper versions of non-rust dependencies, as well as the rust environment.
## Rust
To build Ares, start a nix development shell as above. Within the shell, in the `rust/ares` directory, you can run:
```bash
cargo build
```
to build the Ares executable. This will place the built executable at `target/debug/ares` under the `rust/ares` directory.
Ares is made to run as an urbit "serf", meaning it is intended to be invoked by a "king" which sends it commands and performs side-effects specified by its output. We use the vere king. Special instructions for building the vere king to invoke Ares are forthcoming.
To watch rust and check for errors, run
```bash
cargo watch --clear
```
Until terminated with ctrl-c, this will rebuild Ares library on any change to the underlying source files and report any warnings and errors. It will *not* produce the executable. You must run the build command above to rebuild the executable.
## Hoon
The Nock analysis and lowering for Ares is written in Hoon, and lives at `hoon/codegen.` It is meant to be jammed and included in the Ares binary. (See [`src/load.rs`](rust/ares/src/load.rs) in the Rust sources for details.)
If the hoon source has been synced to a desk, e.g. `sandbox`, on a fakezod, then the build generator can be invoked as:
```
.cg/jam +sandbox!cg-make
```
This will build the Hoon standard library and the Ares Nock analysis as a "trap" meant to be run by Ares. The jammed output can be found at `<fakezod-pier>/.urb/put/cg.jam`, and should be copied to the `rust/ares/bin` directory, from whence the rust build will include it in the executable.
Instructions on testing the analysis in a fakezod are forthcoming.

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README.md
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A redesigned Mars for the Urth/Mars Urbit runtime. Currently WIP.
Read the [proposal](docs/proposal/proposal-nock-performance.md) and [hypotheses](docs/proposal/hypotheses.md) for an overview. Before branching or opening a PR please review the [contribution guidelines](CONTRIBUTING.md).
Read the [proposal](docs/proposal/proposal-nock-performance.md) and [hypotheses](docs/proposal/hypotheses.md) for an overview.
If you want to hack on Ares, read the [developer guide](DEVELOPERS.md).
Before branching or opening a PR please review the [contribution guidelines](CONTRIBUTING.md).