Quodss

urwasm: WebAssembly interpreter suite on Urbit

---

WebAssembly is a low-level language for a portable virtual machine. Wasm is designed to be a compilation target for a variety of programming languages and its design is hardware independent and relatively simple, making its support ubiquitous in modern browsers. Its simple design made it a perfect first candidate for a first emulator of an conventional computational system on a novel functional computer: Urbit. In this paper I discuss the current state of urwasm project and some technical details, as well as describe the strategy to jet the interpreter of a state machine in a functional environment.

---

Introduction

wicrum-wicrun

The target audience is people who are familiar with Urbit's architecture, though not necessarily much of its code.

Plunder and Urbit

As some of you already know, i recently left my job as a core dev for the Urbit Foundation to work on a similar system called Plunder. Plunder was created in 2020 by two former Tlon employees, after their proposal for a new version of Nock was rejected. They have since reworked that significantly and built a reference implementation of their own system. You can follow its continued development on its mailing list.

I've known about Plunder for quite some time now, but their recently released demo -- in which the system is used to serve a 70 GB dataset, complete with metadata and searchable -- made me feel the need to explore it again and in greater detail. Doing this with my personal server doesn't feel like a big ask, but there is currentl

gusmacaulay

with import <nixpkgs> {};

stdenv.mkDerivation {
    name = "postgresql-inside-nixshell";

    buildInputs = [
        glibcLocales
        (pkgs.postgresql.withPackages (p: [ p.postgis ]))
        sqitchPg
        pgcli

mattnewport

|=  dim=@ud  ^-  (list @t)
=/  dx  (div:rs .1 (sun:rs dim))
=/  white  [.1 .1 .1]
=<  (genppm dim)
|%
++  min
    |=  [x=@rs y=@rs]  ^-  @rs
    ?:  (lth:rs x y)  x  y
++  max
    |=  [x=@rs y=@rs]  ^-  @rs

lightdiscord

with import <nixpkgs> {};

stdenv.mkDerivation {
    name = "postgresql-inside-nixshell";

    buildInputs = [
        postgresql
    ];

    shellHook = ''