Pytensor Import Error MAC M1

Questions v5
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1

Hello, thanks in advance for your help.

I’m trying to install pymc on MAC M1 with poetry. The installation procedure is ok and it ends without errors.

But when i try to use the library the following exception comes out:

ImportError: dlopen(/Users/martaperoni/.pytensor/compiledir_macOS-13.0-arm64-i386-64bit-i386-3.11.4-64/tmp9q2mwofr/mfeba4d434591def33153ec442edc27a735fd9fa46fd5f1fae8efd4f490539b0a.so, 0x0002): tried: ‘/Users/martaperoni/.pytensor/compiledir_macOS-13.0-arm64-i386-64bit-i386-3.11.4-64/tmp9q2mwofr/mfeba4d434591def33153ec442edc27a735fd9fa46fd5f1fae8efd4f490539b0a.so’ (mach-o file, but is an incompatible architecture (have ‘x86_64’, need ‘arm64’)), ‘/System/Volumes/Preboot/Cryptexes/OS/Users/martaperoni/.pytensor/compiledir_macOS-13.0-arm64-i386-64bit-i386-3.11.4-64/tmp9q2mwofr/mfeba4d434591def33153ec442edc27a735fd9fa46fd5f1fae8efd4f490539b0a.so’ (no such file), ‘/Users/martaperoni/.pytensor/compiledir_macOS-13.0-arm64-i386-64bit-i386-3.11.4-64/tmp9q2mwofr/mfeba4d434591def33153ec442edc27a735fd9fa46fd5f1fae8efd4f490539b0a.so’ (mach-o file, but is an incompatible architecture (have ‘x86_64’, need ‘arm64’))

the error persists even if i’m trying to install it via pip specifying the arch
arch -arm64 python -m pip install pymc --no-cache

If i check the WHEEL file in site packages the architecture is correctly selected
Wheel-Version: 1.0
Generator: bdist_wheel (0.41.1)
Root-Is-Purelib: false
Tag: cp311-cp311-macosx_13_0_arm64

Can you please help me with this issue? I’m not able to find a solution.

2

We suggest conda, because it’s tricky to set up the compiler stuff otherwise:

https://www.pymc.io/projects/docs/en/stable/installation.html

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3

I can’t use conda, it’s not supported by my production environment.

Does anything that can help come to your mind?

4

You can try to use the JAX or numba backend which wouldn’t require compilation.

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