Would it be possible to have this plugin as a projet plugin ?
I tried adding '"CanContainContent" : true' descriptor to the .uplugin file, and putting the shaders in the Content folder, but it didn't work.
Is installing the shaders in the Engine folder the only way around it ?

<ErrorMessage>Fatal error: [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 1944] Failed to compile default material /Engine/EngineMaterials/DefaultDeferredDecalMaterial.DefaultDeferredDecalMaterial!</ErrorMessage>

caused by FluidSurfaceVertexFactory.ush?

Using landscape module as a reference I have gotten the source compiled.
But I cannot google a clue to fix the following shader errror:

Shader compiler errors compiling WorldGridMaterial for platform PCD3D_SM5:
D:/Code/FigureOut/simplest_srcmdl2/Shaders/Private/FluidSurfaceVertexFactory.ush(227,21-29): Shader FVelocityPS, Permutation 0, VF FFluidSurfaceVertexFactory:
 error X3004: undeclared identifier 'Primitive'

The context is :

half3x3 CalcTangentToWorldNoScale(in half3x3 TangentToLocal)
{
	half3x3 LocalToWorld = GetLocalToWorld3x3();
	half3 InvScale = Primitive.InvNonUniformScale.xyz;   //    <----
	LocalToWorld[0] *= InvScale.x;
	LocalToWorld[1] *= InvScale.y;
	LocalToWorld[2] *= InvScale.z;
	return mul(TangentToLocal, LocalToWorld); 
}

Even if I replace all 'Primitive' with GetPrimitiveData(Parameters.PrimitiveId) the compiler will still prompt me for the same error.

Severity Code Description Project File Line Suppression State
Warning C4996 'FCollisionQueryParams::FCollisionQueryParams': FCollisionQueryParams, to avoid ambiguity, please use other constructor and explicitly provide an FName parameter (not just a string literal) as the first parameter Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile. UE4 E:\UnrealEngine-master\Engine\Plugins\Runtime\FluidSurface\Source\FluidSurface\Private\FluidSurfaceComponent.cpp 272
Warning C4263 'FPrimitiveViewRelevance FFluidSurfaceSceneProxy::GetViewRelevance(const FSceneView _)': member function does not override any base class virtual member function UE4 e:\unrealengine-master\engine\plugins\runtime\fluidsurface\source\fluidsurface\private\FluidSurfaceRender.h 142
Warning C4264 'FPrimitiveViewRelevance FPrimitiveSceneProxy::GetViewRelevance(const FSceneView *) const': no override available for virtual member function from base 'FPrimitiveSceneProxy'; function is hidden UE4 e:\unrealengine-master\engine\plugins\runtime\fluidsurface\source\fluidsurface\private\FluidSurfaceRender.h 193
Error C2664 'void TBaseDynamicMulticastDelegate<FWeakObjectPtr,void,UPrimitiveComponent *,AActor *,UPrimitiveComponent *,int32,bool,const FHitResult &>::__Internal_AddDynamic(UserClass *,void (_cdecl UFluidSurfaceComponent:: )(UPrimitiveComponent _,AActor *,UPrimitiveComponent *,int32,bool,const FHitResult &),FName)': cannot convert argument 2 from 'void (_cdecl UFluidSurfaceComponent:: )(AActor _,UPrimitiveComponent *,int32,bool,const FHitResult &)' to 'void (_cdecl UFluidSurfaceComponent:: )(UPrimitiveComponent *,AActor *,UPrimitiveComponent *,int32,bool,const FHitResult &)' UE4 E:\UnrealEngine-master\Engine\Plugins\Runtime\FluidSurface\Source\FluidSurface\Private\FluidSurfaceComponent.cpp 61
Warning C4996 'USceneComponent::AttachParent': Direct access of AttachParent has been deprecated. Use SetupAttachment, AttachToComponent, or GetAttachParent instead. Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile. UE4 E:\UnrealEngine-master\Engine\Plugins\Runtime\FluidSurface\Source\FluidSurface\Private\Modifiers\FluidSurfaceModifier.cpp 31
Warning C4996 'USceneComponent::AttachParent': Direct access of AttachParent has been deprecated. Use SetupAttachment, AttachToComponent, or GetAttachParent instead. Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile. UE4 E:\UnrealEngine-master\Engine\Plugins\Runtime\FluidSurface\Source\FluidSurface\Private\Modifiers\FluidSurfaceOscillator.cpp 18
Error Failed to produce item: E:\UnrealEngine-master\Engine\Plugins\Runtime\FluidSurface\Binaries\Win64\UE4Editor-FluidSurface.dll UE4 E:\UnrealEngine-master\Engine\Intermediate\ProjectFiles\ERROR 1
Error MSB3075 The command "....\Build\BatchFiles\Build.bat UE4Editor Win64 Development -waitmutex" exited with code 5. Please verify that you have sufficient rights to run this command. UE4 C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.MakeFile.Targets 37

I would like to help, but I don't even understand these errors :(