Jack Nystrom Bvngee

How to compile Sway and wlroots together from source (on NixOS)

I came up with this process when I needed to compile the latest commit of Sway to test a new feature, and my distro (NixOS) didn't have the required wlroots version packaged so I needed to compile that too. Here are the commands I ran for each repo:

1) wlroots

git clone https://gitlab.freedesktop.org/wlroots/wlroots

Zig Compiler: Incremental Compilation

A few ground rules:

Values in the InternPool are immutable. The meaning of a given Index never changes.
The only kind of "exception" to this is that the namespace of types may change. The namespace index is constant, but the contents of that namespace can change while the type lives at the same Index.
Incremental compilation works at the level of single units of semantic analysis (AnalUnit). During semantic analysis, every AnalUnit registers "dependencies" on various things ("dependees"). On each incremental update, these dependencies are used to figure out what to re-analyze.
An incremental update may analyze more AnalUnits than are necessary, but it will never analyze the

24w33a Redstone Experiments

24w33a introduces new experimental changes to redstone dust, aiming to fix some of the long standing issues with it, like the lag it causes and the unintuitive and unreliable way in which it updates.

The problems with redstone dust

The problems with redstone dust stem from its naive implementation. When a wire is updated, it checks what signal it receives from surrounding blocks. If that is different from its current signal strength, it updates it and then notifies neighboring blocks. This implementation is fine for individual wires, but when multiple wires are connected, its flaws become apparent: the wires power each other, but the signal degrades over distance. Thus when you remove the power source from a line of wires, the signal will die out completely. However, any individual wire does not have this context. It will only decrease its signal strength to match what it receives from neighboring wires, and that will repeat until all wires have depowered completely. This r

	DEVICE = attiny85
	CLOCK = 8000000
	PROGRAMMER = stk500v1
	PORT = /dev/tty.usbmodem1421
	BAUD = 19200
	FILENAME = main
	COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)

	all: usb clean build upload