igraph depends on magrittr: version magrittr 1.5, magrittr 1.5

igraph depends on Matrix: version Matrix 1.2-17, Matrix 1.2-17, Matrix 1.2-17

igraph depends on pkgconfig: version pkgconfig 2.0.2, pkgconfig 2.0.2

Matrix depends on lattice: version lattice 0.20-38, lattice 0.20-38, lattice 0.20-38