1. Download a deb file of OpenMX from v3.9.9-2.
2. Install them with apt or dpkg.

sudo apt install ./openmx_3.9.9-2_amd64.deb

This is a deb file to install OpenMX 3.9.9. The default value for a input keyword of DATA.PATH is changed to /usr/share/openmx/DFT_DATA19.

• This deb file includes a database in 2019 of fully relativistic pseudopotentials (VPS) and pseudo-atomic orbitals (PAO), which could be an input data of openmx. It is installed on /usr/share/openmx/DFT_DATA19.
• Examples of inputs and computational results are also contained. They are installed on /usr/share/openmx/work.

The deb file was prepared on Debian 11 (bullseye).