Packages with the glpk use flag

dev-python / cvxopt : Python package for convex optimization

sci-libs / coinor-bonmin : COIN-OR Basic Open-source Nonlinear Mixed INteger programming

sci-libs / coinor-clp : COIN-OR Linear Programming solver

sci-libs / coinor-osi : COIN-OR Open Solver Interface

sci-libs / coinor-symphony : COIN-OR solver for mixed-integer linear programs

sci-libs / coinor-utils : COIN-OR Matrix, Vector and other utility classes

sci-libs / lemon : C++ template static library of common data structures and algorithms

sci-mathematics / octave : High-level interactive language for numerical computations

  • Add support for sci-mathematics/glpk for linear programming