i think theyre pushing it into 1.6.0 so no more custom compile will be required.. ya its kinda silly but i think they hid themselves away for a while too many people were going crazy over it.. (thats why it became such a mystery). i can post the instructions if youre interested, but also like i said 1.6 is already almost out.
Discussion
Install instructions for tft-gui on T-Deck:
For Windows, first install WSL and Python+pip via: https://plainenglish.io/blog/setting-up-python-on-windows-subsystem-for-linux-wsl-26510f1b2d80
(Linux, Windows+WSL, MacOS) In the terminal/shell:
sudo apt update
sudo apt install libpython3-dev
sudo apt install python3-venv
python3 -m venv meshtastic
cd meshtastic && source bin/activate
pip install -U platformio
git clone --single-branch --branch tft-gui-work https://github.com/meshtastic/firmware.git
cd firmware && git submodule update --init --recursive --remote
pio run -e t-deck-tft -t upload --upload-port /dev/tty{DEVICE}
** Then, one thing that got me was there is NO serial, wifi or bluetooth on this build by default. and the ONLY way I could get to a configuration page was to turn on wifi after editing platformio.ini
+ -D MESHTASTIC_EXCLUDE_WEBSERVER=0
+ -D MESHTASTIC_EXCLUDE_SOCKETAPI=0
That's for 1.5.22
For 1.6 there is a secret deb package here in their debian repo. https://github.com/meshtastic/meshtastic.github.io/tree/master
You can unzip it and flash the t-deck-tft bin. It didn't work for me but others reported success, I may just have been going crazy at the time. This one supposedly has bluetooth config.
Enjoy!