This is a continuation of Julia 0.7 and JuMP: ERROR: cosd is not defined for type Variable - #5 by tkoolen trying to get my JuMP problem converted to Julia 0.7.
How to create an Ipopt problem with JuMP on Julia 0.7? According to http://www.juliaopt.org/meetings/bordeaux2018/lubin.pdf this should be possible with JuMP master.
(v0.7) pkg> st
Status `~/.julia/environments/v0.7/Project.toml`
[f83cbe0b] AstroTime v0.0.0 [`~/.julia/dev/AstroTime`]
[6e4b80f9] BenchmarkTools v0.4.0
[1537fe66] CALCEPH v0.0.3+ [`~/.julia/dev/CALCEPH`]
[5ae59095] Colors v0.9.3
[0c46a032] DifferentialEquations v5.3.0+ #master (https://github.com/JuliaDiffEq/DifferentialEquations.jl.git)
[7a1cc6ca] FFTW v0.2.4
[7073ff75] IJulia v1.9.3
[c601a237] Interact v0.9.0
[b6b21f68] Ipopt v0.3.0
[4076af6c] JuMP v0.18.2+ #master (https://github.com/JuliaOpt/JuMP.jl.git)
[76087f3c] NLopt v0.5.0
[91a5bcdd] Plots v0.19.3
[c46f51b8] ProfileView v0.3.0
[9a3f8284] Random
I have tried the optimizer keyword but I don’t know what object (no IpoptOptimizer) to pass it and it does not seem it accepts an optimizer keyword.