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See https://github.com/lsst/rubin_sim for more information. Rubin_sim includes all of the standard lsst_sims packages EXCEPT for sims_catUtils and sims_GalsimInterface, and imports are similar to the previous lsst.sim.XXX imports (rubin_sim.XXX) so your code should need very little modification.
Installing rubin_sim is significantly simpler than installing the lsst_sims packages. Installation instructions are given in the README of the rubin_sim package. Online documentation for the software package is at https://rubin-sim.lsst.io
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Installing old lsst_sims packages
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