A community effort to collect a curated set of analysis pipelines built using Nextflow.

nf-core

has anyone seen this while running with conda on gitpod yet ? and know how to fix this ?
```CondaValueError: You have chosen a non-default solver backend (libmamba) but it was not recognized. Choose one of: classic```

FYI it works after this
```conda update conda --solver=classic```

I got it yesterday too... It's weird though. Libmamba is default now...

It shouldn't have an old version. There's nothing on the `dev` or `master` branch that suggest an outdated or incorrectly set `conda`: <https://github.com/nf-core/tools/blob/dev/nf_core/gitpod/gitpod.Dockerfile>

Ah wait the other thing I remember now is Vonda was always complaining about a missing shared library?

I just tried `conda install mamba` on `nfcore/gitpod:latest` and got no such error. Perhaps a old cached prebuild?

Hmm ok, I might try later then if I have a chance

try running any test using conda on a fresh gitpod

Ah, yeah. I did that the other day and got that message. I thought it was just because the package itself was old.

It's a difference between the images for sure. The modules repo uses `nfcore/gitpod:dev`

I might have broken something when I removed the defaults channel.

we also need to update nf-test=0.9.0 in the gitpod

It'll happen automatically when the dev image is rebuilt.

I think I found the issue. I suspect `defaults` is still part of the standard channels to search when doing the initial install, but the `conda clean` then cleans up all the pkg dirs too, removing the necessary lib. Installing `libmamba` fixed it, but I then realised doing `--update-all` also fixed the channels to use their `conda-forge` channel equivalents.

<https://github.com/nf-core/tools/pull/3159>