dl6tud [1] filed a deletion request for openfoam-plus [2]:

Dear Sir or Madam,

the package openfoam-plus is a very old version of OpenFOAM - of June 2017. As a new version is released every 6 month, this package should be deleted. The up-to-date OpenFOAM software is available in the package openfoam-com, which I am maintaining with the help of the developers of OpenFOAM. Moreover, the OpenFOAM software was called "OpenFOAM+" only for a few years long ago. The recommended name today is "openfoam-com".

Thank you very much, Norbert Weber

[1] https://aur.archlinux.org/account/dl6tud/ [2] https://aur.archlinux.org/pkgbase/openfoam-plus/