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Install python 3.12 using mamba on mac

I am trying to install python 3.12 on an M1 Apple Mac using mamba as follows ...

mamba install -c conda-forge python=3.12.0

It yields the following error message ...

Looking for: ['python=3.12.0']

conda-forge/osx-arm64                                       Using cache
conda-forge/noarch                                          Using cache
Could not solve for environment specs
The following packages are incompatible
├─ mamba is installable with the potential options
│  ├─ mamba [1.0.0|1.1.0|...|1.5.1] would require
│  │  └─ python_abi 3.11.* *_cp311, which can be installed;
│  ├─ mamba [0.10.0|0.11.1|...|1.5.1] would require
│  │  └─ python_abi 3.8.* *_cp38, which can be installed;
│  ├─ mamba [0.10.0|0.11.1|...|1.5.1] would require
│  │  └─ python_abi 3.9.* *_cp39, which can be installed;
│  └─ mamba [0.18.1|0.18.2|...|1.5.1] would require
│     └─ python_abi 3.10.* *_cp310, which can be installed;
└─ python 3.12.0**  is not installable because there are no viable options
   ├─ python 3.12.0 would require
   │  └─ python_abi 3.12.* *_cp312, which conflicts with any installable versions previously reported;
   └─ python 3.12.0rc3 would require
      └─ _python_rc, which does not exist (perhaps a missing channel).

Any pointers on how to do this properly would be much appreciated.

Solution

  • Upgrading base environment Python to a version that hasn't finished migrating1 is a recipe for trouble. Generally, one does not need to upgrade base environment's Python unless the Python version goes EOL.

    If you would like to explore the new Python 3.12, then create a new environment:

    mamba create -n py312 -c conda-forge python=3.12

    [1]: Migration is the process on Conda Forge by which packages get rebuilt to support new global versions, such as Python 3.12 or R 4.3. Conda Forge provides a dashboard to track the status of migrations, such as Python 3.12.