r-cran-openmx 2.15.5-1 (riscv64 binary) in ubuntu focal

 Create structural equation models that can be manipulated
 programmatically. Models may be specified with matrices or paths (LISREL
 or RAM) Example models include confirmatory factor, multiple group,
 mixture distribution, categorical threshold, modern test theory,
 differential Fit functions include full information maximum likelihood,
 maximum likelihood, and weighted least squares. equations, state space,
 and many others. Support and advanced package binaries available at
 <http://openmx.ssri.psu.edu>. The software is described in Neale,
 Hunter, Pritikin, Zahery, Brick, Kirkpatrick, Estabrook, Bates, Maes, &
 Boker (2016) <doi:10.1007/s11336-014-9435-8>.