Open source linear algebra modelling domain language for Python (comparable to Pyomo, Linopy, JuMP, GAMS, AMPL, GNU MathProg). Equation syntax is the way Nodal-Tools likes it, debugging friendly, data feeding is simple, directly linked to HiGHS for warm-starts and it is blazingly fast (polars all the way through): https://nodal-tools.fi/polar-high/latest/compare/benchmark/