Version 0.4.0 of AmplNLWriter.jl introduces a major breaking change for users:
BonminNLSolver(), CouenneNLSolver(), and IpoptNLSolver() have been removed and will now throw an error.
Users of Bonmin and Couenne should change their code to
using CoinOptServices, AmplNLWriter
# instead of BonminNLSolver()
solver = AmplNLSolver(CoinOptServices.bonmin)
# instead of CouenneNLSolver()
solver = AmplNLSolver(CoinOptServices.couenne)
Users of Ipopt should change their code to
using Ipopt, AmplNLWriter
# instead of IpoptNLSolver()
solver = AmplNLSolver(Ipopt.amplexe)
Alternatively, users can continue to pass the full path of the solver executable as the first argument to AmplNLSolver. i.e:
using AmplNLWriter
solver = AmplNLSolver("path/to/bonmin")
Other changes
The release also includes a number of other changes including improved error messages if the solver crashed without returning a result to AmplNLWriter.