* gnu/packages/chemistry.scm (gromacs): Update to 2022.4. * gnu/packages/patches/gromacs-tinyxml2.patch: Adjust accordingly.
* gnu/packages/chemistry.scm (gromacs): New variable. * gnu/packages/patches/gromacs-tinyxml2.patch: New file... * gnu/local.mk (dist_patch_DATA): ...add it here. Signed-off-by: Ludovic Courtès <ludo@gnu.org>