Getting the same GUID after compiling ghpy

[ivelin.peychev]

When using the definition from here:

Tutorial: creating a Grasshopper component with the Python GHPY compiler

GhPython in Rhino WIP ships with an all-Rhino Python compiler that can be used to create .Net compiled assemblies containing compiled instructions. Unlike other methods that are based on embedding a Python code string in a C# component, this speeds up code execution and makes reverse engineering more difficult. There are two options for the process of making a component, #1 is extremely simplified and #2 is more advanced. The component is able to pick up names, descriptions and help from the or…

How can I make sure the output ghpy has the same GUID so that I don’t get multiple components of the same thing added to the ribbon?

[piac (Giulio Piacentino)]

These are rules provided by the Grasshopper SDK: they are the same for C#, Vb.Net and Python GHPYs.

When you publish your first version, you choose (or get automatically assigned) your Assembly.GUID and Component.GUID. Only one assembly per id can be loaded at any time in Grasshopper.

When it’s time to upgrade a GHPY, you need to use the ‘Advanced compilation mode’ to set your original Assembly.GUID and Component.GUID. Also, the amount of inputs and outputs, and their types, cannot change. The assembly name should not change. Basically, only the behavior should change.

If these rules are kept, the old components get serialized into the new ones.

I hope this helps,

Giulio

–
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

[ivelin.peychev]

The thing is that these Assembly.GUID and Component.GUID inside that compiling.gh are automatically generated I cannot influence it to put my own GUID.

I tried providing my own GUID as input like so:

def generateCode(ID):
    
    doc = ghenv.Component.OnPingDocument()
    
    if not doc: return
    component = doc.FindComponent(ID)
    
    if not component: return
    
    settings = GhPython.Assemblies.ComponentGenerationParams(component)
    
    settings.Name = zName
    settings.Nickname = zNickname
    
    settings.Description = zDescription
    
    settings.Category = zCategory
    settings.Subcategory = zSubCategory
    settings.Id = zGUID
    
    
    
    code = GhPython.Assemblies.CodeGeneration.GenerateComponentCode(component, settings, randomIds=True)
    code += "\n\n"
    
    settings = GhPython.Assemblies.AssemblyGenerationParams(component)
    
    settings.Author = zAuthor
    code += GhPython.Assemblies.CodeGeneration.GenerateAssemblyCode(component, settings, randomIds=True)
    return settings, code

assemblySettings, code = generateCode(ID)

But it didn’t work, a random one was generated.

oh, I think I saw my own mistake. The inputs of the components cannot be used inside the def without self. in front right?

[piac (Giulio Piacentino)]

@ivelin.peychev

But it didn’t work, a random one was generated.

Well, randomIds=True makes sure that the ID is always a new one.

Also… when I suggestion that you use ‘Advanced compilation mode/Copy compilable code’, I mean that you use Title 2 (2. Advanced compiling) in Tutorial: creating a Grasshopper component with the Python GHPY compiler. Please follow those instructions. There’s no need to write a meta-component when you are trying to get a basic one to work properly.