Title: No solver log/output shown with GRBMILPSolver, while HiGHSMILPSolver prints normally

[AlessandroPampado99]

When solving a model through pySMSpp/SMS++, solver progress is normally printed to the screen.

However, this does not seem to happen when using Gurobi through GRBMILPSolver: only the solver name is shown, and no further log/output appears.

By contrast, when using HiGHS through HiGHSMILPSolver, the full solver log is printed as expected.

Expected behavior

When using GRBMILPSolver, solver progress/log output should be visible on screen, similarly to what happens with HiGHSMILPSolver.

Actual behavior

With Gurobi, the only output shown is:

Solver: GRBMILPSolver

With HiGHS, the solver log is printed normally, for example:

Running HiGHS 1.13.1 (git hash: n/a): Copyright (c) 2026 under MIT licence terms

Solver: HiGHSMILPSolver
LP has 619503 rows; 329882 cols; 1388286 nonzeros
...