rrun

WIP: DO NOT USE, this piece of software isn't ready for general consumption, some things are not implemented, some things are not working properly.

rrun allows to seamlessly run Reason/OCaml code with native speed.

Motivation

rrun aims to implement the following workflow for engineering software with Reason/OCaml language:

• Start writing code by opening a plain *.re or *.ml file
  • ... with autocomplete and real time error reporting available
  • ... having a good set of standard libraries for interacting with a system
  • ... reusing 3rd party code from a local file system or from the network
• Code can be run with a single command invocation rrun ./myapp.re
  • ... which builds the code and caches the result
  • ... and sandboxes (configurable) execution by preventing it from reading/writing to disk or accessing network

Installation (not implemented yet)

Install rrun via npm:

% npm install -g rrun

Usage

Running Code

Run Reason/OCaml code with:

% rrun ./app.re
% rrun ./app.ml

rrun uses ocamlopt to compile sources and then caches compiled artifacts, on second invocation there will be no recompilation.

Dependencies

You can specify dependencies between modules with [%import "..."] syntax:

module Url = [%import "./Url.re"]
module Chalk = [%import "https://example.com/Chalk.re"]

let url = Url.make("http://example.com");
print_endline(Chalk.red(Url.show(url)));

IDE support

There's rrun edit command which will run your configured editor (via $EDITOR) in a properly configured environment:

% rrun edit ./app.re

Sandboxed Execution

TODO

Internals

TODO

Development

Workflow

% npm install -g esy
% git clone https://github.com/andreypopp/rrun.git
% cd rrun
% esy install
% esy build
% esy "$EDITOR"

Roadmap

• Sandboxed execution

• Support interfaces

• Build Reason code

• Build OCaml code

• Support [%import "./relative/path.ml"] dependencies

• Support [%import "https://secure/url.ml"] dependencies