Installation instructions:
apt install apt-transport-https gnupg2 ca-certificates
gpg --no-default-keyring --keyring /usr/share/keyrings/solidcharity-openpetra-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0x4796B710919684AC
echo 'deb [arch=amd64 signed-by=/usr/share/keyrings/solidcharity-openpetra-keyring.gpg] https://download.solidcharity.com/repos/solidcharity/openpetra/debian/bookworm bookworm main' >> /etc/apt/sources.list.d/solidcharity-openpetra.list
apt update
apt install sql2diagram