# Paraview 5.12 MacOS build missing paraview.simple.Conduit
**URL:** https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642
**Category:** In Situ Support
**Created:** [May 16, 2024, 12:22pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642 "2024-05-16T12:22:44Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@jappa](https://discourse.paraview.org/u/jappa)
#### Post date: [May 16, 2024, 12:22pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/1 "2024-05-16T12:22:44Z")
Hi
Before I attempt to build paraview on MacOS from source, is there any reason why the MacOS build from the download link does not include paraview.simple.Conduit?
I am attempting to connect a paraview client on MacOS with a remote catalyst v2 session and it appears to be failing because paraview.simple.Conduit is missing.
Thanks
Jamil
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [May 16, 2024, 12:59pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/2 "2024-05-16T12:59:36Z")
Welcome to ParaView, @jappa !
I’m not sure I understand your question. `paraview.simple` is a package of mostly functions that ease Python scripting in ParaView, and there is not a Conduit package in it AFAIK.
Are you seeing an error message that you could report?
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### Author:  [@jappa](https://discourse.paraview.org/u/jappa)
#### Post date: [May 16, 2024, 1:09pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/3 "2024-05-16T13:09:26Z")
Hi Cory
This is the error I get from the MacOS client when the catalyst session connects.
ERROR: In vtkSIProxyDefinitionManager.cxx, line 518
vtkSIProxyDefinitionManager (0x6000022cd980): No proxy that matches: group=sources and proxy=Conduit were found.
ERROR: In vtkSMDeserializerXML.cxx, line 42
vtkSMStateLoader (0x600002793870): Could not create a proxy of group: sources type: Conduit
The Linux client seems to have paraview.simple.Conduit installed but I have not been able to test with the Linux client to see if I get the same error.
My MacOS client is connected to a pvserver session before I start the catalyst connection, if that helps.
Jamil
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### Author:  [@ben.boeckel](https://discourse.paraview.org/u/ben.boeckel)
#### Post date: [May 16, 2024, 2:33pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/4 "2024-05-16T14:33:26Z")
Does `from vtkmodules.vtkIOCatalystConduit import vtkConduitSource` work? The module might not be enabled?
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### Author:  [@jappa](https://discourse.paraview.org/u/jappa)
#### Post date: [May 16, 2024, 3:25pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/5 "2024-05-16T15:25:45Z")
> [@ben.boeckel](#):
>
> `vtkmodules.vtkIOCatalystConduit import vtkConduitSource`
Hi Ben
I think you are correct. From the python shell I get
Traceback (most recent call last):
File “”, line 1, in
ModuleNotFoundError: No module named ‘vtkmodules.vtkIOCatalystConduit’
Also looking at the paraview-superbuild ci settings it looks like the catalyst project is only enabled on the Linux build so I assume the default MacOS build does not include it.
I will attempt to turn on the catalyst project for my MacOS build and let you know if it works.
Jamil
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### Author:  [@jappa](https://discourse.paraview.org/u/jappa)
#### Post date: [May 17, 2024, 6:54pm UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/6 "2024-05-17T18:54:21Z")
> [@ben.boeckel](#):
>
> from vtkmodules.vtkIOCatalystConduit import vtkConduitSource
Hi Ben
I can confirm if I build on MacOS with -DENABLE\_catalyst=ON the MacOS client works as expected and the catalyst session connects correctly.
Can I put in a request that the default MacOS build include catalyst?
Jamil
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 21, 2024, 8:49am UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/7 "2024-05-21T08:49:26Z")
I can confirm that catalyst is not enabled in macOS and Windows binary release.
> Can I put in a request that the default MacOS build include catalyst?
Of course, you can either open an issue on [https://gitlab.kitware.com/paraview/paraview-superbuild/-/issues](https://gitlab.kitware.com/paraview/paraview-superbuild/-/issues) or, even better, try adding it yourself in the right file and creating a merge request.
See `.gitlab/ci/configure_linux_plain.cmake` and `.gitlab/ci/configure_macos.cmake` in the superbuild.
FYI @nicolas.vuaille @Francois_Mazen @Lucas_Givord
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### Author:  [@jappa](https://discourse.paraview.org/u/jappa)
#### Post date: [May 21, 2024, 9:12am UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642/8 "2024-05-21T09:12:30Z")
I will submit a merge request with the update for MacOS
Thanks
Jamil