LibMambaUnsatisfiableError: Encountered problems while solving: - nothing provides _python_rc needed by python-3.12.0rc3-rc3_h2628c8c_1_cpython Could not solve for environment specs The following packages are incompatible \u251c\u2500 av is installable with the potential options \u2502 \u251c\u2500 av [0.3.2|0.3.3|0.4.0] would require \u2502 \u2502 \u2514\u2500 python 2.7* , which can be installed; \u2502 \u251c\u2500 av [0.3.2|0.3.3|0.4.0] would require \u2502 \u2502 \u2514\u2500 python 3.5* , which can be installed; \u2502 \u251c\u2500 av [0.3.2|0.3.3|0.4.0] would require \u2502 \u2502 \u2514\u2500 python 3.6* , which can be installed; \u2502 \u251c\u2500 av [10.0.0|11.0.0|...|9.2.0] would require \u2502 \u2502 \u2514\u2500 python >=3.10,<3.11.0a0 , which can be installed; \u2502 \u251c\u2500 av [10.0.0|11.0.0|...|12.3.0] would require \u2502 \u2502 \u2514\u2500 python >=3.11,<3.12.0a0 , which can be installed; \u2502 \u251c\u2500 av [10.0.0|6.1.0|...|9.2.0] would require \u2502 \u2502 \u2514\u2500 python >=3.7,<3.8.0a0 , which can be installed; \u2502 \u251c\u2500 av [10.0.0|9.1.1|9.2.0] would require \u2502 \u2502 \u2514\u2500 python_abi 3.8 *_pypy38_pp73, which requires \u2502 \u2502 \u2514\u2500 python 3.8.* *_73_pypy, which can be installed; \u2502 \u251c\u2500 av [10.0.0|11.0.0|...|9.2.0] would require \u2502 \u2502 \u2514\u2500 python >=3.8,<3.9.0a0 , which can be installed; \u2502 \u251c\u2500 av [10.0.0|12.0.0|...|9.2.0] would require \u2502 \u2502 \u251c\u2500 pypy3.9 >=7.3.15 , which requires \u2502 \u2502 \u2502 \u2514\u2500 python 3.9.* *_73_pypy, which can be installed; \u2502 \u2502 \u2514\u2500 python_abi 3.9 *_pypy39_pp73, which requires \u2502 \u2502 \u2514\u2500 python 3.9.* *_73_pypy, which can be installed; \u2502 \u251c\u2500 av [10.0.0|11.0.0|...|9.2.0] would require \u2502 \u2502 \u2514\u2500 python >=3.9,<3.10.0a0 , which can be installed; \u2502 \u251c\u2500 av [6.0.0|6.1.0|...|8.0.3] would require \u2502 \u2502 \u2514\u2500 python >=3.6,<3.7.0a0 , which can be installed; \u2502 \u251c\u2500 av [10.0.0|11.0.0|...|12.3.0] would require \u2502 \u2502 \u2514\u2500 python_abi 3.12.* *_cp312, which requires \u2502 \u2502 \u2514\u2500 python 3.12.* *_cpython, which can be installed; \u2502 \u251c\u2500 av 10.0.0 would require \u2502 \u2502 \u2514\u2500 pypy3.8 >=7.3.11 with the potential options \u2502 \u2502 \u251c\u2500 pypy3.8 7.3.11 would require \u2502 \u2502 \u2502 \u2514\u2500 python 3.8.* *_73_pypy, which can be installed; \u2502 \u2502 \u2514\u2500 pypy3.8 7.3.11 would require \u2502 \u2502 \u2514\u2500 python 3.8.* *_7.3_pypy, which can be installed; \u2502 \u2514\u2500 av 10.0.0 would require \u2502 \u2514\u2500 pypy3.9 >=7.3.11 with the potential options \u2502 \u251c\u2500 pypy3.9 [7.3.11|7.3.12|7.3.13|7.3.15|7.3.16], which can be installed (as previously explained); \u2502 \u2514\u2500 pypy3.9 7.3.12 would require \u2502 \u2514\u2500 python 3.9.* *_7.3_pypy, which can be installed; \u251c\u2500 build is installable with the potential options \u2502 \u251c\u2500 build 0.10.0 would require \u2502 \u2502 \u2514\u2500 python >=3.10,<3.11.0a0 , which can be installed; \u2502 \u251c\u2500 build 0.10.0 would require \u2502 \u2502 \u2514\u2500 python >=3.11,<3.12.0a0 , which can be installed; \u2502 \u251c\u2500 build 0.10.0 would require \u2502 \u2502 \u2514\u2500 python >=3.8,<3.9.0a0 , which can be installed; \u2502 \u2514\u2500 build 0.10.0 would require \u2502 \u2514\u2500 python >=3.9,<3.10.0a0 , which can be installed; \u2514\u2500 python 3.12** is not installable because there are no viable options \u251c\u2500 python [3.12.0|3.12.1|...|3.12.5] conflicts with any installable versions previously reported; \u2514\u2500 python 3.12.0rc3 would require \u2514\u2500 _python_rc, which does not exist (perhaps a missing channel).