LibMambaUnsatisfiableError: Encountered problems while solving: - nothing provides mdanalysis 0.15.0 needed by mdanalysistests-0.15.0-py27_0 Could not solve for environment specs The following packages are incompatible ├─ mdanalysistests is installable with the potential options │ ├─ mdanalysistests 0.15.0 would require │ │ └─ mdanalysis 0.15.0 , which does not exist (perhaps a missing channel); │ ├─ mdanalysistests 0.16.0 would require │ │ └─ mdanalysis 0.16.0 , which does not exist (perhaps a missing channel); │ ├─ mdanalysistests 0.16.1 would require │ │ └─ mdanalysis 0.16.1 , which does not exist (perhaps a missing channel); │ ├─ mdanalysistests [0.16.2|0.17.0|...|0.20.1] would require │ │ └─ python [2.7* |>=2.7,<2.8.0a0 ], which can be installed; │ ├─ mdanalysistests [0.17.0|0.18.0] would require │ │ └─ python [3.5* |>=3.5,<3.6.0a0 ], which can be installed; │ ├─ mdanalysistests 0.17.0 would require │ │ └─ python 3.6* , which can be installed; │ ├─ mdanalysistests [0.18.0|0.19.0|...|2.0.0] would require │ │ └─ python >=3.6,<3.7.0a0 , which can be installed; │ ├─ mdanalysistests [0.19.2|0.20.1|...|2.1.0] would require │ │ └─ python >=3.7,<3.8.0a0 , which can be installed; │ ├─ mdanalysistests [0.20.1|1.0.0|...|2.2.0] would require │ │ └─ python >=3.8,<3.9.0a0 , which can be installed; │ ├─ mdanalysistests [2.0.0|2.1.0|2.2.0] would require │ │ └─ python >=3.9,<3.10.0a0 , which can be installed; │ ├─ mdanalysistests [2.1.0|2.2.0] would require │ │ └─ python >=3.10,<3.11.0a0 , which can be installed; │ ├─ mdanalysistests [2.2.0|2.3.0] would require │ │ └─ python >=3.8,<=3.10 , which can be installed; │ ├─ mdanalysistests [2.4.1|2.4.2|2.4.3] would require │ │ └─ python >=3.8,<=3.11 , which can be installed; │ ├─ mdanalysistests [2.5.0|2.6.1] would require │ │ └─ python >=3.9,<=3.11 , which can be installed; │ ├─ mdanalysistests 2.7.0 would require │ │ └─ python >=3.9,<=3.12 with the potential options │ │ ├─ python 3.10.0, which can be installed; │ │ ├─ python [3.10.1|3.10.10|...|3.10.9], which can be installed; │ │ ├─ python [3.9.0|3.9.1|...|3.9.9], which can be installed; │ │ ├─ python 3.11.0, which can be installed; │ │ ├─ python [3.11.1|3.11.10|...|3.11.9], which can be installed; │ │ ├─ python 3.12.0, which can be installed; │ │ └─ python [3.12.0rc3|3.13.0rc1|3.13.0rc2|3.13.0rc3] would require │ │ └─ _python_rc, which does not exist (perhaps a missing channel); │ └─ mdanalysistests 2.8.0 would require │ ├─ mdanalysis 2.8.0 with the potential options │ │ ├─ mdanalysis 2.8.0 would require │ │ │ └─ python >=3.10,<3.11.0a0 , which can be installed; │ │ ├─ mdanalysis 2.8.0 would require │ │ │ └─ python >=3.11,<3.12.0a0 , which can be installed; │ │ └─ mdanalysis 2.8.0 would require │ │ └─ python_abi 3.12.* *_cp312, which requires │ │ └─ python 3.12.* *_cpython, which can be installed; │ └─ python >=3.9,<=3.13 with the potential options │ ├─ python 3.10.0, which can be installed; │ ├─ python [3.10.1|3.10.10|...|3.10.9], which can be installed; │ ├─ python [3.9.0|3.9.1|...|3.9.9], which can be installed; │ ├─ python 3.11.0, which can be installed; │ ├─ python [3.11.1|3.11.10|...|3.11.9], which can be installed; │ ├─ python 3.12.0, which can be installed; │ ├─ python [3.12.0rc3|3.13.0rc1|3.13.0rc2|3.13.0rc3], which cannot be installed (as previously explained); │ ├─ python 3.13.0 conflicts with any installable versions previously reported; │ └─ python [3.12.1|3.12.2|...|3.12.8], which can be installed; └─ python 3.13** is not installable because there are no viable options ├─ python [3.12.0rc3|3.13.0rc1|3.13.0rc2|3.13.0rc3], which cannot be installed (as previously explained); ├─ python 3.13.0 conflicts with any installable versions previously reported; └─ python 3.13.1 conflicts with any installable versions previously reported.