Andrei Vasiliu andreivasiliu

Demi Nix:

build1 + build2 vms
- Reduce bare-metal code to something very small, perhaps just vagrant
  - That probably means no vagrant for demi1 + demi2
Build the whole VM with nix
Split the VM image/OS build, and the Demi build
- Perhaps split the VM image build and OS build as well, somehow
  - E.g. build grub/initrd into the image, but the rootfs outside
This will allow rebuilding Demi stuff without rebuilding the OS

Demi Cluster:

A cluster of two halves
There is no master or slave; both demi hosts are masters
Security through isolation:
- All web services (HTTP, DNS) run inside Demi VMs
- Demi VMs may not access anything on the LAN, or on their host
- Demi VMs may access each other
Security through minimalism:
The Demi VMs run on minimal Demi bare metal hosts

Sample barcode reader I made to learn JavaScript

Resources:

state["phase"] = (in["phase"] or 0) + in["frequency"]
state["phase"] = state["phase"] + in["frequency"]
out["out"] = sin(state["phase"])

	use core::fmt::Debug;
	use std::str::FromStr;

	trait ArgsFromSource {
	const ARG_COUNT: usize;
	fn from_source(source: &Source) -> Self;
	}

	trait ArgFromSource {
	fn from_source(source: &Source, index: usize) -> Self;

	From fce8a3045a4ef921f749d9e42fffe5075c6ddedc Mon Sep 17 00:00:00 2001
	From: Peter da Silva <[email protected]>
	Date: Thu, 14 Jul 2022 18:46:46 +0000
	Subject: [PATCH 5/5] Update version number.

	---
	configure.in \| 2 +-
	1 file changed, 1 insertion(+), 1 deletion(-)

	diff --git a/configure.in b/configure.in

	;; This is an operating system configuration generated
	;; by the graphical installer.

	#!curly-infix

	{use-modules(gnu())}
	{use-service-modules(desktop networking ssh xorg)}

	{operating-system(
	locale("en_US.utf8")

	# From: https://wiki.tcl-lang.org/page/TemplaTcl%3A+a+Tcl+template+engine
	source tt.tcl

	set template {
	<element><%= $myvar %></element>
	}

	# Create template engine
	TemplaTcl::create tt

	def show_map() -> Iterable[str]:
	yield f"The map has {len(bat_map)} rooms."
	if not current_room:
	return

	yield f"Current room: {current_room.title}"

	links = bat_links.get(current_room.room_id)
	if links:
	inc = len(links.incoming)