“…In the non-enriched case, the existence of such model structures on categories of diagrams in a combinatorial model category is folklore. However, the breakthrough by Garner, Hess, Kędziorek, Riehl, and Shipley in [HKRS17], and then in [GKR18], provides new tools which unify the proof of existence of both injective and projective model structures under weaker assumptions, namely for accessible model categories, i.e. locally presentable model categories with accessible functorial factorizations.…”