better error message to make sure problem constructor adjoints exist

Author: jClugstor

lib/BracketingNonlinearSolve/ext/BracketingNonlinearSolveDiffEqBaseExt.jl

@@ -0,0 +1,5 @@
+module BracketingNonlinearSolveDiffEqBaseExt
+
+BracketingNonlinearSolve.is_extension_loaded(::Val{:DiffEqBase}) = true
+
+end

lib/BracketingNonlinearSolve/src/BracketingNonlinearSolve.jl

@@ -39,6 +39,8 @@ function bracketingnonlinear_solve_up(prob::IntervalNonlinearProblem, sensealg,
     return SciMLBase.__solve(prob, alg, args...; kwargs...)
 end
 
+is_extension_loaded(::Val) = false
+
 @setup_workload begin
     for T in (Float32, Float64)
         prob_brack = IntervalNonlinearProblem{false}(