== Mycroft Mark2 GUI using system QT5 and KDE framework ==
This is based on the very helpful build log of user AIIX that he published on https://github.com/AIIX/Documentation/blob/master/Custom-RPI4-MycroftImage.md
He is doing this on Rasbperry 4 while the target here is Raspberry 3B but also on 64-bit.

=== Install Linux ===
Get https://ubuntu.com/download/raspberry-pi/thank-you?version=20.04&architecture=arm64+raspi (Ubuntu Server 20.04 for 64-bit arm - codename focal)
flash it to sdcard and boot.
After first boot login as ubuntu/ubuntu (takes a while until you can do this), change password
==== Wifi ====
* ls /sys/class/net
on RP3 the wifi interface is the wlan0
* sudo nano /etc/netplan/50-cloud-init.yaml
{{{
# network: {config: disabled}
network:
    ethernets:
        eth0:
            dhcp4: true
            optional: true
    version: 2
    wifis:
        wlan0:
            optional: true
            access-points:
                "ESSID-of-the-Accesspoint":
                    password: "your-password"
            dhcp4: true
}}}
==== user ====
* sudo useradd mycroft -g users -G sudo -m -s /bin/bash
* sudo passwd mycroft
* sudo nano /etc/group
(add mycroft to all groups like ubuntu)

From now on work as user mycroft

=== update / initial apt setup ===
* sudo apt-get update && sudo apt-get dist-upgrade -y
* sudo apt install git gnupg wget curl apt-transport-https software-properties-common
Do the next steps as root:
* sudo su -
Add KDE Neon gpg key:
* wget -qO - 'http://archive.neon.kde.org/public.key' | sudo apt-key add -
Add the repository
* echo "deb https://archive.neon.kde.org/unstable focal main" > /etc/apt/sources.list.d/neon.list
* sudo apt-get update

=== mycroft core ===
* sudo apt-get install git python3 python3-dev python3-setuptools libtool libffi-dev libssl-dev autoconf automake bison swig libglib2.0-dev portaudio19-dev mpg123 screen flac curl libicu-dev pkg-config libjpeg-dev libfann-dev build-essential jq
=== mimic ====
skipped for now

=== Plasma Nano ===
==== Install the system Libraries ====
I will try to come up with a completer list later but I think most of it should be in the dependencies of the following
* sudo apt install sddm kwin-wayland kwin-x11 openssh-server ftp i2c-tools konsole nano plasma-workspace-wayland plasma-workspace plasma-pa plasma-widgets-addons libkf5wallet-bin gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-libav qml-module-qtmultimedia network-manager plasma-nm konsole plasma-workspace-dev
I was not asked for the login manager so I set it manually:
* sudo dpkg-reconfigure sddm

=== build plasma-nano ===
* sudo apt install cmake kwayland-dev
* cd ~
* git clone https://github.com/KDE/plasma-nano
* cd plasma-nano
* mkdir build
* cd build
* cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DKDE_INSTALL_LIBDIR=lib -DKDE_INSTALL_USE_QT_SYS_PATHS=ON

this results in an error:
{{{
 * Qt5Network (required version >= 5.12.5)
 * Qt5Qml
 * Qt5Quick
 * Qt5 (required version >= 5.2.0)
 * ECM (required version >= 1.6.0)
 * Qt5Core
 * KF5Plasma (required version >= 5.0.0)
 * KF5WindowSystem (required version >= 5.0.0)
 * Qt5Gui (required version >= 5.11.0)
 * KF5Wayland (required version >= 5.0.0)
 * KF5 (required version >= 5.0.0)

CMake Warning at /usr/lib/arm-linux-gnueabihf/cmake/KF5Package/KF5PackageMacros.cmake:64 (message):
  couldn't generate metainfo for org.kde.plasma.nano: Package type
  "Plasma/Shell" not found

  Error: description missing, will result in broken appdata field as
  <sumary/> is mandatory at /home/pi/plasma-nano/shell/metadata.desktop
Call Stack (most recent call first):
  /usr/lib/arm-linux-gnueabihf/cmake/KF5Plasma/KF5PlasmaMacros.cmake:34 (kpackage_install_package)
  CMakeLists.txt:35 (plasma_install_package)
}}}
I think this is an error in the 5.17 release, have to check this in detail