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| other:uvcdat:cdat_conda:miniconda3_install [2021/03/09 11:40] – [Changing the .condarc file] jypeter | other:uvcdat:cdat_conda:miniconda3_install [2021/06/28 15:17] – [Using mamba instead of conda] jypeter |
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| ==== Using mamba instead of conda ==== | ==== Using mamba instead of conda ==== |
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| Even when using a proper ''.condarc'' in order to get packages coming only from //conda-forge//, ''conda install'' may fail to solve the dependencies after meditating during an enormous time, when we specify **complex environments**. Using CDAT as a base environment, and adding a lot of extra packages is a complex environment. | Even when using a proper ''.condarc'' in order to get packages coming only from //conda-forge//, ''conda install'' may fail to solve the dependencies after meditating during an enormous time (e.g. [[https://github.com/conda/conda/issues/9367#issuecomment-793968239|Solving environment: failed with initial frozen solve. Retrying with flexible solve.]]), when we try to deal with **complex environments** (i.e. we already have lots of installed packages and we want to add even more packages). |
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| The only solution seems to replace ''conda'' with [[https://github.com/mamba-org/mamba|mamba]], a reimplementation of the conda package manager in C++ ([[https://wolfv.medium.com/making-conda-fast-again-4da4debfb3b7|Making conda fast again]]) | Using CDAT as a base environment, and adding a lot of extra packages is a **complex environment**. |
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| | The only solution seems to replace ''conda'' with [[https://github.com/mamba-org/mamba|mamba]], a reimplementation of the conda package manager in C++ ([[https://wolfv.medium.com/making-conda-fast-again-4da4debfb3b7|Making conda fast again]]): |
| | * Install ''mamba'' in the //base// (i.e. //miniconda//) environment\\ ''conda install mamba -n base -c conda-forge'' |
| | * Use ''mamba'' instead of ''conda'' when installing packages.\\ Theoretically, you don't need to specify ''install -c conda forge'' any more, because ''conda-forge'' is now the default source of new packages\\ ''mamba install lots_of_packages'' |
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