This was removed in 2.7, though that should have been kept in a non-breaking version. Maybe it would be nice to have it at least only deprecated? This package seems to be used in quite some places, so having this break in a non-breaking version might be a bit dangerous.
Hi, As I reported here https://github.com/JuliaSmoothOptimizers/QuadraticModels.jl/issues/122
our CI broke. I could narrow it down to https://github.com/JuliaSmoothOptimizers/NLPModelsModifiers.jl loading LinearOperators.jl and using DiagonalQN.
This was removed in 2.7, though that should have been kept in a non-breaking version. Maybe it would be nice to have it at least only deprecated? This package seems to be used in quite some places, so having this break in a non-breaking version might be a bit dangerous.