LibMambaUnsatisfiableError: Encountered problems while solving: - nothing provides _python_rc needed by python-3.12.0rc3-rc3_hab00c5b_1_cpython Could not solve for environment specs The following packages are incompatible ├─ mpi4py 4.0.3** is installable with the potential options │ ├─ mpi4py 4.0.3 would require │ │ └─ impi_rt >=2021.14.1,<2021.14.2.0a0 , which requires │ │ └─ mpi 1.0 impi, which can be installed; │ ├─ mpi4py 4.0.3 would require │ │ └─ python_abi 3.10.* *_cp310, which can be installed; │ ├─ mpi4py 4.0.3 would require │ │ └─ python_abi 3.11.* *_cp311, which can be installed; │ ├─ mpi4py 4.0.3 would require │ │ └─ mpich >=4.3.0,<5.0a0 , which requires │ │ ├─ mpi 1.0.* mpich, which can be installed; │ │ └─ ucx >=1.18.0,<1.19.0a0 , which can be installed; │ ├─ mpi4py 4.0.3 would require │ │ └─ openmpi >=5.0.6,<6.0a0 , which can be installed; │ ├─ mpi4py 4.0.3 would require │ │ └─ python_abi 3.13.* *_cp313, which can be installed; │ └─ mpi4py 4.0.3 would require │ └─ python_abi 3.9.* *_cp39, which can be installed; ├─ openmpi 5.0.5** is not installable because there are no viable options │ ├─ openmpi 5.0.5 would require │ │ ├─ mpi 1.0 openmpi, which conflicts with any installable versions previously reported; │ │ └─ ucx >=1.16.0,<1.17.0a0 , which conflicts with any installable versions previously reported; │ ├─ openmpi 5.0.5 would require │ │ ├─ mpi 1.0 openmpi, which conflicts with any installable versions previously reported; │ │ └─ ucx >=1.17.0,<1.18.0a0 , which conflicts with any installable versions previously reported; │ └─ openmpi 5.0.5 would require │ └─ mpi 1.0 openmpi, which conflicts with any installable versions previously reported; └─ python 3.12** is not installable because there are no viable options ├─ python [3.12.0|3.12.1|...|3.12.9] 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).