darkUI

darkUI is a Darkroom-themed fork of MinUI, Shaun Inman's focused custom launcher and libretro frontend — stripped down to exactly the two devices it runs on:

• Anbernic RG35XX (original, 2022 — Actions ATM7039S), platform rg35xx
• Anbernic RG35XXSP (Allwinner H700), platform rg35xxplus

All launcher and frontend design and engineering is Shaun Inman's work; this fork rebrands the boot logos, install screens, and launcher chrome, and prunes the other ten platforms upstream supported. Upstream is archived, so this fork also serves as a pinned, buildable snapshot with both devices sharing one SD-card release.

Features

• Simple launcher, simple SD card — one card works in both devices
• No settings or configuration
• No boxart, themes, or distractions
• Consistent in-emulator menu with quick access to save states, disc changing, and emulator options
• Automatic sleep, power-off, and resume (lid-aware on the SP)
• Streamlined emulator frontend (minarch + libretro cores)
• Darkroom boot logo and branding

Building

Each platform builds inside its own Docker toolchain (x86_64 buildroot — on Apple Silicon build and run the images with --platform linux/amd64):

• union-rg35xx-toolchain → image rg35xx-toolchain
• union-rg35xxplus-toolchain → image rg35xxplus-toolchain

make PLATFORM=rg35xx build      # builds inside the toolchain container
make PLATFORM=rg35xxplus build  # rg35xx must be built first (shares its cores)
make                            # everything: both platforms + package

Release zips land in ./releases. The payload zip keeps the internal name MinUI.zip so existing MinUI chainloaders pick it up as an update.

Installing

See skeleton/BASE/README.txt (shipped as README.txt in the base release zip).