pw package install imgui pw package install glfw
Install host OS requiremets (only required for Linux) shown below.
Debian / Ubuntu
sudo apt install libglfw3-dev libglfw3
Arch Linux
sudo pacman -S glfw-x11
gn gen out --args=" dir_pw_third_party_imgui=\"$PWD/.environment/packages/imgui\" " ninja -C out host ./out/host_debug/obj/applications/terminal_display/bin/terminal_demo