tap-pixlet is the unofficial Tidbyt app runner that powers Pixbyt, the self-hosted Tidbyt app server for advanced apps that aren't supported by the official community app server that you can access through Tidbyt's mobile app.
It extends Pixlet (the official Tidbyt app development framework) with an unofficial standard library named Pixlib, similar to how Starlib is the unofficial standard library for Starlark (the Python-like language Tidbyt apps are written in).
tap-pixlet was built using the Meltano SDK, and is intended to be run using Pixbyt, which combines it with
target-tidbyt and target-webp using Meltano.
See Pixbyt.
See Pixlib.