Publish a new nuget package compatible with FSharp.Core 5 and support for netstandard 2.0 about flips

[matthewcrews]

I'll look into it this evening

[matthewcrews]

@smoothdeveloper There's a new version released (2.3.5) which has these changes. I've tested writing a net5.0 app and everything seems to work. Thanks for the PR!

[smoothdeveloper]

@matthewcrews thanks, it loads in FSI from Visual Studio now, the next issue is loading the native dependency, I'm not sure there is an easy built-in way for this:

System.TypeInitializationException: The type initializer for 'Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE' threw an exception. ---> System.TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception. ---> System.DllNotFoundException: Unable to load DLL 'google-ortools-native': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
at Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE.SWIGExceptionHelper.SWIGRegisterExceptionCallbacks_operations_research_linear_solver(ExceptionDelegate applicationDelegate, ExceptionDelegate arithmeticDelegate, ExceptionDelegate divideByZeroDelegate, ExceptionDelegate indexOutOfRangeDelegate, ExceptionDelegate invalidCastDelegate, ExceptionDelegate invalidOperationDelegate, ExceptionDelegate ioDelegate, ExceptionDelegate nullReferenceDelegate, ExceptionDelegate outOfMemoryDelegate, ExceptionDelegate overflowDelegate, ExceptionDelegate systemExceptionDelegate)
at Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE.SWIGExceptionHelper..cctor()
--- End of inner exception stack trace ---
at Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE.SWIGExceptionHelper..ctor()
at Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE..cctor()
--- End of inner exception stack trace ---
at Google.OrTools.LinearSolver.operations_research_linear_solverPINVOKE.Solver_CreateSolver(String jarg1)
at Google.OrTools.LinearSolver.Solver.CreateSolver(String solver_id)
at Flips.ORTools.solve(OrToolsSolverType solverType, SolverSettings settings, Model model)
at FSI_0007.solve() in C:\work\flips.fsx:line 10
at <StartupCode$FSI_0008>.$FSI_0008.main@()

[smoothdeveloper]

Ok, here is a workaround for using in VS:

#r "nuget: NativeLibraryLoader"
open NativeLibraryLoader
new NativeLibrary(@"path\to\libz3.dll")
new NativeLibrary(@"path\to\google-ortools-native.dll")

[matthewcrews]

Huh, that's weird. That's seems like a regression on the Microsoft side. We had an issue with the native library loader in beta but they fixed it. Seems like it broke again.