Regression for compute_conflict!?

[dourouc05]

With the previous version of Gurobi.jl, I could run this kind of code:

using JuMP, Gurobi
m = Model(Gurobi.Optimizer)
@variable(m, x)
compute_conflict!(m)
MOI.compute_conflict!(backend(m))

With the latest rewrite, I'm getting errors like these:

julia> MOI.compute_conflict!(backend(m))
ERROR: MethodError: no method matching compute_conflict!(::MathOptInterface.Utilities.CachingOptimizer{MathOptInterface.AbstractOptimizer,MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}})
Closest candidates are:
  compute_conflict!(::Gurobi.Optimizer) at C:\Users\Thibaut\.julia\packages\Gurobi\ntZ45\src\MOI_wrapper.jl:3146
Stacktrace:
 [1] top-level scope at REPL[20]:1

I now have to use something like MOI.compute_conflict!(backend(m).optimizer.model).

[odow]

You must have been using a direct_model:

using JuMP, Gurobi
m = direct_model(Gurobi.Optimizer())
@variable(m, x)
MOI.compute_conflict!(backend(m))

For the caching optimizer to work, we need to add some methods to MOI.

[dourouc05]

Thanks for your quick reply! I'm marking this as solved, then, if it's an MOI issue.