  We introduce a formalism for describing holomorphic blocks of 3d quiver gauge
theories using networks of Ding-Iohara-Miki algebra intertwiners. Our approach
is very direct and gives an explicit identification of the blocks with
Dotsenko-Fateev type integrals for q-deformed quiver W-algebras. We also
explain how quiver theories corresponding to Dynkin diagrams of superalgebras
arise, write down the corresponding partition functions and W-algebras, and
explain the connection with supersymmetric Macdonald-Ruijsenaars commuting
Hamiltonians.
