Chris McCormick chr15m

Building a Mastodon Cross-Posting Pipeline

This document outlines the technical implementation details for building a real-time, self-hosted Mastodon cross-posting system. It is designed for senior developers who want to replicate this architecture on their own Mastodon instances.

Assumptions & Environment Layout

This guide assumes you are deploying alongside an existing Mastodon installation with the following layout:

User: Scripts run under the mastodon user.
Directory: Scripts are located in ~/live/mods/ (or similar directory accessible to the mastodon user).
Process Management: Systemd user services are available and lingering is enabled (loginctl enable-linger mastodon).

	const cljs =`
	(ns updater
	(:require
	[reagent.core :as r]
	[reagent.dom :as rdom]))

	(def state (r/atom nil))

	(defn app []
	[:div "Hello world!"]

	#!/usr/bin/env python3
	"""
	SIDBlaster USB - Serial Interface Demo
	- Demonstrates reading and writing SID registers via serial port.
	- The ftdi_sio module should be loaded and presenting on /dev/ttyUSB0.
	- Tested on SIDBlaster-USB Tic Tac on Linux.
	- Raspberry Pi should work too.
	"""

	import time

	<!DOCTYPE html>
	<html>
	<head>
	<title>Nostr Feed Test</title>
	<style>
	body {
	background-color: #222;
	color: #eee;
	font-family: 'Courier New', Courier, monospace;
	}

	#!/bin/bash

	set -e

	if [ "$#" -lt 1 ] \|\| [ "$#" -gt 3 ]; then
	echo "Deploys strfry to a fresh Ubuntu VPS."
	echo "(Installs nginx, acme.sh, and builds strfry from scratch)"
	echo
	echo "Usage: $0 HOST [ADMIN_EMAIL] [ADMIN_PUBKEY]"
	echo "Example: $0 my-relay.example.com [email protected] <32-byte-hex-pubkey>"

	(ns iconloader
	(:require
	[promesa.core :as p]))

	;; Atom to store the base URL for SVG icons.
	;; Default is "", meaning relative to the current path.
	(defonce svg-base-url (atom ""))

	;; Function to set the base URL for SVG icons.
	;; Call this before load-icon macros are expanded if a custom base URL is needed.

	# You can put these in your .bashrc (or .profile or other shell setup) to setup direnv, pyenv, nvm.

	# pyenv setup hook (install it first)
	export PYENV_ROOT="$HOME/.pyenv"
	[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
	eval "$(pyenv init -)"
	eval "$(pyenv virtualenv-init -)"

	# nvm setup hook (install it first)
	export NVM_DIR="$HOME/.nvm"

	#!/bin/sh

	# Scrapes documentation from a URL and converts it to Markdown suitable for aider convention files
	# to provide context to the LLM.

	if [ $# -eq 0 ]; then
	echo "Usage: $(basename "$0") <URL> [URL...]"
	echo
	echo "Generate aider 'convention' Markdown context from documentation URLs."
	echo "suitable for providing LLM context about a project's conventions and style."

	(ns testdemo
	(:require
	["playwright$default" :as pw]
	[clojure.test :refer [deftest is use-fixtures async] :as t]
	[promesa.core :as p]))

	(def rig (atom nil))

	; set up playwright before running and tear it down afterwards
	(use-fixtures

	<!DOCTYPE html>
	<html lang="en-us">
	<head>
	<title>Scittle Example</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="mobile-web-app-capable" content="yes">
	<meta name="apple-mobile-web-app-capable" content="yes">
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/concrete.min.css">
	<script src="https://cdn.jsdelivr.net/npm/scittle@latest/dist/scittle.min.js" type="application/javascript"></script>