Old version of moose-dev package

[PeterWeil22]

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Issue or question about MOOSE

I hope this is not an ignorant question.

The application I am working on uses an old version of MOOSE. The newest version of the conda package moose-dev from 2025.9.5 uses python 3.13.5.

I think this is causing build issues when building the old version of MOOSE because _PyDict_SetItem_KnownHash is no longer supported in python 13.

Is there a way for me to install an older version of the moose-dev package when I install conda?

Specifically, I am looking to install the 2024.5.13 version.

(Optional) code in question / simulation log / errors

No response

Encountering Errors? Please include diagnostic output

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[GiudGiud]

Hello

Is there a way for me to install an older version of the moose-dev package when I install conda?

We dont recommend it but if you must you can specify an old version of moose-dev
https://stackoverflow.com/questions/38411942/install-a-specific-anaconda-package-version (first answer)
However you will need to be using an old version of moose as well to make it work

[PeterWeil22]

Thank you, your solution worked perfectly for my purposes.

I verified the name of the moose-dev version I was looking for on the INL Conda Package Library Linux version history: https://conda.software.inl.gov/public/linux-64/

To create my environment I used this command: conda create -n moose moose-dev=2024.05.13

Now my build of the old MOOSE version is succeeding