The Complete Computing Environment

CCE and Emacs Update Feed


This page contains new modules for The Complete Computing Environment, my Emacs and NixOS automation environment. The CCE is designed to be modular, allowing me to intersperse code and documentation using Literate Programming facilities built in to org-mode which is then published to the web using The Arcology Project site engine.

A feed is generated from this page at and cross-posted to the Fediverse on my Fediverse instance.

Making my NixOS system deploys as simple as possible with Morph, a hosts.toml file, and my Morph Command Wrapper Nix

This weekend I tried setting up deploy-rs, and it and flakes are kind of not very good for what I am doing with my computers.

I spent some time today doing a think that I have wanted to do for a while, moving my "network topology" in to a data file which can be ingested by the tools themselves rather than declaring them in code.

This starts with defining a hosts.toml file whose topology maps more-or-less to the one that Morph uses; a network is a deployment entity which can have any number of hosts in it:

description = "my laptops and desktop"
enableRollback = true
config = "../roles/endpoint"

# target = "rose-quine"
# stateVersion = "23.05"
# user = "rrix"

There are reasonable defaults in the host configurations so that adding a new host is a single-line operation in the hosts.toml file.

With that file in place, Deploying from my hosts.toml defines a function that ingests the networks and spits out a Nix attrset in the shape that Morph wants to execute:

  pkgs = import <nixpkgs> {};
  allNetworks = pkgs.lib.importTOML ./hosts.toml;
  mkNetwork = import ./mkNetwork.nix { inherit pkgs; networks = allNetworks; };
in mkNetwork "endpoints"

and from there i could say morph build $file_defined_above and it would go off and do that. then another invocation of morph deploy with a grab-bag of arguments would actually roll the system out to the host.

Taking things a step further is fun though. Why not make a simple wrapper that can make this easier? Morph Command Wrapper does that and allows me to just type deploy to run a change out to the host i'm sitting at, or deploy -b to just build it, or deploy --all to run it out everywhere.

Invoking deploy-targets will print out a list of all the hosts that the system knows about, which can then be conveniently fed in to completing-read

(->> (shell-command-to-string "deploy-targets")
     (s-split "\n")
     (append '("--all"))
     (completing-read "Which host do you want to deploy to? "))

And that can be used by the interactive emacs function arroyo-flood to automatically tangle the systems' org-mode role files, dynamically extracting a list of server, laptop, desktop, etc, modules from a sqlite cache along the way, and then deploying those! I'm pretty happy with this.

Hopefully systemd-inhibit-mode will keep me from burning in my monitor and burning out my laptop battery.

When I watch a full-screen Video in Firefox while using XMonad, it doesn't properly disable DPMS so my screen blanks every five minutes in to the video. Rather than try to figure out why that was, I would invoke systemd-inhibit to inhibit screen blanking. This was fine, but I'd run it in a terminal emulator which I would promptly forget about. Cue my laptop having a dead battery or my monitor burning in the lock-screen text overnight when I would manually lock the desktop and head to bed.

systemd-inhibit-mode is a dead-simple global minor mode which exists to remind me via the modeline that I have the inhibitor process running:

It's 27 lines of code that, if you are interested in, you can copy to your init.el. 😊 I'm not terribly motivated to stick stuff like this in MELPA. Anyways it's licensed under the Hey Smell This license if you are some sort of person who cares about licenses or think I do.

Moved my Org Site Engine-to-Fediverse cross-posting from feed2toot to Feediverse

Lately I have been working on integrating my org-mode site engine with my Fediverse presence. Following for technical work and for creative/tea/philosophical crap should give a full view of what I am adding to my sites and keeping my main presence for 1-1 interactions with my fedi-friends.

There are Atom feeds available for headlines on various pages on the sites, and tying those to Fediverse posts should be pretty straightforward, but finding the right tool for the job is always the hard part when I am forging my own way forward.

Yesterday in the back of a rental car I added feed metadata to the org-mode document for my 2023 Hawaii Big Island Trip and wondered how I could get that on to my fedi profile – i realized that it required my laptop to run the Morph deployment to ship a new NixOS system. a bit overkill for what I want to do, especially when the data is already in at least one sqlite database!

So I modified Arcology's Router to add an endpoint which returns all the feeds on the site in a JSON document and then set to work making a script which wrapped feed2toot to orchestrate this but quickly felt that feed2toot is a bit too over-engineered for what I am asking it to do, especially when I set about adding multi-account support to it; the configuration parser is doing a lot more than I want to deal with. Feediverse is a simple single-file script which I was able to easily modify to my needs, with a bit of code-smell in the form of yaml.load-based configuration.

My fork of feediverse reads that feeds.json document and iterates over every feed looking for new posts. This lets me add new feeds to my cross-poster without deploying The Wobserver on my laptop. There is a slow pipeline that prevents me from using this to Shitpost or live-toot things, but I think that's basically okay. The idea is to use it to slowly ship out things when I make new art, or have an end-of-day log, or publish a site update, without having to think too hard about it. Most of the Arroyo Systems stuff (from adding software to my laptop or server to adding pages to my site) is managed by adding metadata keys to my org-mode documents, and this is now no different, though perhaps a bit too "roundabout" for it to be considered good engineering:

But my axiom in writing the Arroyo Systems stuff and The Arcology Project as a whole is that Personal Software Can Be Shitty, and this certainly is, but it means I can post new feeds from my Astro Slide so who can say whether it's good or bad.

As much as I am not a fan of Pleroma, it's really nice to just be able to fire HTML right at my server and have it appear halfway decently on the Fediverse with inline links and even images working out just fine. Just have to keep my posts somewhat hsort. This is probably too long for Fedi already, bye.

First Update: A welcome return Emacs CCE Catchup

I noticed that my feed in the Planet Emacslife feed aggregator wasn't valid any more and am re-establishing a feed here for capturing my configuration-specific stuff. First-time readers may recognize me from the Emacs or Nix-Emacs rooms, or from building the first prototype of an Emacs Matrix Client which would later be taken and evolved and polished by alphapapa after I became frustrated with hauling bugs and implementing end-to-end encryption.

Right now most of the new functionality in my notebooks is centered on NixOS automation and the deployment of my Wobserver, but I also do increasingly silly hacks with org-roam and my own org-mode metadatabase called arroyo-db. If you haven't seen it before, my Arroyo Systems Management documents are brain-bending automation for dynamically a Concept Operating System from many org-mode docs. I have vague dreams to create a system where Emacs and NixOS users could bootstrap a minimal Linux operating system by referencing documents on the web & seamlessly pulling them in to their system, but this is a fair bit of the way off still.

All of this is published straight out of my org-roam knowledgebase using a home-built web site engine called The Arcology Project which exists to give me a way to publish these pages across multiple domains, to arbitrary web paths, without having to line them all up on a file-system. It's primarily written in Python but it uses Arroyo to generate a sqlite database which the Python reads, and some custom lua and templates which Pandoc uses to render the org-mode docs to HTML.

I'll keep this feed up to date with new modules and interesting updates. Here are a few that have fallen between the cracks over the last 6 months or more: