• System76 launch keyboard
• handbook
• 285$ + 85$ shipment to Japan, + 1700yen tax
• After arrival, the left space-key was not pushed upwards after getting pressed. Removing the cap, trying to remove the 2 sabilitzers, and assembling again seems to have fixed the issue. Others have removed the stabilizers, or used key lube, to solve the issue.
• config section for ~/.config/sway/config:

input "13188:1:System76_Launch_Configurable_Keyboard_(launch_1)_Keyboard" {
   xkb_layout us
}

• https://github.com/pop-os/keyboard-configurator

dnf -y install cargo hidapi-devel.x86_64 cairo-gobject-devel.x86_64 \
  pango-devel.x86_64 atk-devel.x86_64 gdk-pixbuf2-devel.x86_64 \
  gtk3-devel.x86_64

# Clone keyboard-configurator if necessary
git clone https://github.com/pop-os/keyboard-configurator

# Build and run the configurator
cd keyboard-configurator
cargo run --release

I modified the layout from to more match Thinkpad layouts - with one tweak, bottom row left is on Thinkpads “Fn”, but here “Ctrl”. Bottom left Ctrl is the only key which does not have the proper cap.