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Obsidian Folder Table of Contents

A table of contents for Obsidian, covering the entire vault or any subfolder.

This system consists of a single markdown file which you drop into any folder in an Obsidian vault, which renders:

• a hierarchical tree of that folder's subfolders (recursively), files and headings
• file/heading nodes of the tree are links
• empty folders are also displayed
• uses natural number sorting

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Obsidian TaskNotes: Recursive Project Resolution

The Problem

TaskNotes uses the projects property to associate a task with projects:

---
type: task
projects:

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Ubuntu Touch: Access Waydroid Files from Host System

This script sets up a systemd service on Ubuntu Touch to grant the phablet user access to key directories of the Android system inside the Waydroid container (such as Download and Documents). This is enables you want to manage Waydroid's user files directly from the Ubuntu Touch file manager or terminal, and share files between the two systems.

What it Does:

• Adjusts folder permissions to make Waydroid’s shared storage readable/writable by the host.
• Creates a systemd service that waits for Waydroid to start, then applies the required permissions automatically.
• Creates a convenient symbolic link (~/Waydroid) in the phablet user's home directory for quick access.

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Download YouTube Playlist Script

This script downloads videos from a YouTube playlist, either the full video or audio-only in MP3 format. The produced files' names include the track number and title, and the following media info is stored in the files' metadata:

• title
• track number
• album (YouTube playlist title)
• publisher (name of the YouTube channel)

Usage:

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PyQt5 & Kvantum Themes in Python Virtual Environment

Problem

Kvantum is a useful theme manager to style the themes of any Qt Apps without touching their code. When running a PyQt5 application from source using my OS' python installation, the kvantum theme is applied correctly. However, when using a python virtual environment, it isn't, producing the following error:

QApplication: invalid style override 'kvantum' passed, ignoring it.

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VM Running Raspberry Pi OS Desktop or Lite with GUI

Here's a script that creates and runs a virtual machine running Raspberry Pi OS Desktop or Lite with a GUI. It is based on cGandom's guide on setting up a Raspberry Pi OS Lite VM without a GUI. Quoting that guide:
"This isn't full-blown hardware emulation of the Raspberry Pi 4, but more about creating a virtual environment for the OS."

The main improvements made by this script over that guide are:

• working GUI (tested with Raspberry Pi OS Desktop, as well as frame-buffer and X-Server on Raspberry Pi OS lite)

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Install Hydrogen for Pulsar in 2024

Since the sunset of the Atom text editor, getting some of its plugins to work in its successor Pulsar has been a bit tricky.

For me the Hydrogen plugin was the most critical issue. After collection partial solutions from many forums, I compiled a script for manually installing it that has worked reliably for me for several months now, on both x86 and arm architectures.

Sorry for the delay in publishing, I hope this helps other Pulsar users.

Tested with Pulsar v1.109.0 on:

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Install Blender 3.6.2 on Raspberry Pi with Ubuntu 24

When upgrading my Raspberry Pi 5 from Ubuntu 23 to Ubuntu 24, I had an issue that the blender application stopped working. I figured out that the cause was that Ubuntu 24 came with blender version 4.0.2, which didn't work on a raspberry pi, while blender version 3.6.2, which came with Ubuntu 23, did work. So I worked out how to install blender version 3.6 on Ubuntu 24 by downloading the specific DEB packages intended for Ubuntu 23 and installing them using dpkg after installing the dependencies manually.

Tested on:

• Raspberry Pi 5 with 8GB of RAM running Ubuntu 24.04 LTS

Install Blender 3.6.2