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 ├─ av is installable with the potential options │ ├─ av [0.3.1|0.3.2|...|7.0.1] would require │ │ └─ python [2.7* |>=2.7,<2.8.0a0 ], which can be installed; │ ├─ av 0.3.1 would require │ │ └─ python 3.4* , which can be installed; │ ├─ av [0.3.1|0.3.2|0.3.3|0.4.0] would require │ │ └─ python 3.5* , which can be installed; │ ├─ av [0.3.2|0.3.3|0.4.0] would require │ │ └─ python 3.6* , which can be installed; │ ├─ av [10.0.0|11.0.0|...|9.2.0] would require │ │ └─ python >=3.10,<3.11.0a0 , which can be installed; │ ├─ av [10.0.0|11.0.0|...|12.3.0] would require │ │ └─ python >=3.11,<3.12.0a0 , which can be installed; │ ├─ av [10.0.0|6.1.0|...|9.2.0] would require │ │ └─ python >=3.7,<3.8.0a0 , which can be installed; │ ├─ av [10.0.0|11.0.0|...|9.2.0] would require │ │ └─ python >=3.8,<3.9.0a0 , which can be installed; │ ├─ av [10.0.0|9.1.1|9.2.0] would require │ │ └─ python_abi 3.8 *_pypy38_pp73, which requires │ │ └─ python 3.8.* *_73_pypy, which can be installed; │ ├─ av [10.0.0|11.0.0|...|9.2.0] would require │ │ └─ python >=3.9,<3.10.0a0 , which can be installed; │ ├─ av [10.0.0|11.0.0|...|9.2.0] would require │ │ ├─ pypy3.9 [>=7.3.13 |>=7.3.15 ], which requires │ │ │ └─ python 3.9.* *_73_pypy, which can be installed; │ │ └─ python_abi 3.9 *_pypy39_pp73, which requires │ │ └─ python 3.9.* *_73_pypy, which can be installed; │ ├─ av [6.0.0|6.1.0|...|8.0.3] would require │ │ └─ python >=3.6,<3.7.0a0 , which can be installed; │ ├─ av [7.0.1|8.0.0|8.0.1|8.0.2|8.0.3] would require │ │ └─ python_abi 3.6 *_pypy36_pp73, which requires │ │ └─ python 3.6.* *_73_pypy, which can be installed; │ ├─ av [8.1.0|9.0.0|...|9.1.1] would require │ │ └─ python_abi 3.7 *_pypy37_pp73, which requires │ │ └─ python 3.7.* *_73_pypy, which can be installed; │ ├─ av [10.0.0|12.0.0|12.1.0|12.2.0|12.3.0] would require │ │ └─ python_abi 3.12.* *_cp312, which requires │ │ └─ python 3.12.* *_cpython, which can be installed; │ ├─ av 10.0.0 would require │ │ └─ pypy3.8 >=7.3.11 with the potential options │ │ ├─ pypy3.8 7.3.11 would require │ │ │ └─ python 3.8.* *_73_pypy, which can be installed; │ │ └─ pypy3.8 7.3.11 would require │ │ └─ python 3.8.* *_7.3_pypy, which can be installed; │ └─ av 10.0.0 would require │ └─ pypy3.9 >=7.3.11 with the potential options │ ├─ pypy3.9 [7.3.11|7.3.12|7.3.13|7.3.15|7.3.16], which can be installed (as previously explained); │ └─ pypy3.9 7.3.12 would require │ └─ python 3.9.* *_7.3_pypy, which can be installed; ├─ build is installable with the potential options │ ├─ build 0.10.0 would require │ │ └─ python >=3.10,<3.11.0a0 , which can be installed; │ ├─ build 0.10.0 would require │ │ └─ python >=3.11,<3.12.0a0 , which can be installed; │ ├─ build 0.10.0 would require │ │ └─ python >=3.8,<3.9.0a0 , which can be installed; │ └─ build 0.10.0 would require │ └─ python >=3.9,<3.10.0a0 , which can be installed; └─ python 3.12** is not installable because there are no viable options ├─ python [3.12.0|3.12.1|...|3.12.5] conflicts with any installable versions previously reported; └─ python 3.12.0rc3 would require └─ _python_rc, which does not exist (perhaps a missing channel).