Add the repository to a Debian/Ubuntu system:
curl -fsSL https://apt.limpido.app/pubkey.asc | sudo tee /etc/apt/keyrings/limpido.asc > /dev/null echo "deb [signed-by=/etc/apt/keyrings/limpido.asc] https://apt.limpido.app stable main" \ | sudo tee /etc/apt/sources.list.d/limpido.list > /dev/null sudo apt update && sudo apt install limpido
Source: apt.limpido.app · Distribution: stable · Component: main · Architectures: amd64, arm64.
The repository is signed offline with a dedicated GPG key distinct from the in-app updater's minisign+ML-DSA pair. See the source.