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| 8 Apr 2026 |
|  JonnyTest joined the room. | 15:39:28 |
| JonnyTest | Hi everyone,
I've been trying for three days to get a (mini-) conda environment running using a predefined env.yaml file. The .yaml file includes packages like r-base, jupyter Lab, Python and others. My goal is to use the R kernel in Jupyter Lab. But it just won't work (though the Python kernel does work).
So I installed the conda shell with “nix-env -iA nixos.conda” (should I even use nix-env?), activated it, and created the desired environment from the .yaml file. Then I activated Jupyter Lab to run R commands there, but my R kernel won’t connect. I’m getting warnings that the “utils” and “stats” packages can’t be found, even though they’re there. I’ve tried everything possible, reinstalling conda and the environment, but I keep getting the same errors. Then I thought, okay, this must have something to do with R. Instead of using the YAML file, I just downloaded R-base into a new environment with “conda create -n r_test r-base -c conda-forge,” went into the R terminal (“R”) to install both packages there, but the packages cannot be installed.
I think this is a very simple mistake, but I’m too clueless to figure it out. Anyone who wants to test it is welcome to run these commands:
- nix-env -iA nixos.conda
- conda-shell
- conda create -n r_test r-base -c conda-forge
- conda activate r_test
- R
| 15:50:51 |
| JonnyTest | Finally, the R kernel is working smoothly in Jupyter Lab now. https://github.com/JonnyTtest/nixos-conda-r-jupyter-guide/blob/main/README.md | 20:20:36 |
 jbedo | just wondering if you tried the R language support in nixpkgs or if that wasn't suitable for some reason? | 22:02:47 |
| 9 Apr 2026 |
| JonnyTest | I don't know, I probably should have used flake.nix, but it seemed too fancy to me and I have no idea how it works. My solution doesn't seem ideal for NixOS, but it works | 10:34:09 |
| jbedo | don't have to use flakes, the R language framework is documented at https://nixos.org/manual/nixpkgs/stable/#r | 11:26:16 |
| 10 Apr 2026 |
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