Build and test

Allow using the existing eigensystem stuff for reversible models. #2346

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2 errors and 7 warnings

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ccache 4.10.2_3 is already installed and up-to-date. To reinstall 4.10.2_3, run: brew reinstall ccache

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!

cairo 1.18.2 is already installed and up-to-date. To reinstall 1.18.2, run: brew reinstall cairo

fmt 11.1.1 is already installed and up-to-date. To reinstall 11.1.1, run: brew reinstall fmt

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!

Treating r as a formula. For the cask, use homebrew/cask/r or specify the `--cask` flag. To silence this message, use the `--formula` flag.

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!