Nonlinear and differential/algebraic equations solver Formula was removed
Last version was

Revision: 2

sundials requires the following formulae to be installed:
cmake 3.10.1 Cross-platform make
petsc 3.7.6_4 Scalable solution of models that use partial differential equations

Recent formula history

FX Coudert sundials: migrate to homebrew/core
ilovezfs sundials: fix cmake audit failure (#5113)
Sebastian Schöps sundials: add recommended suite-sparse dependency
Dominique Orban sundials: openmp and superlu_mt options, fixes
Sebastian Schöps sundials 2.7.0

Formula code at GitHub