Hello, I used

nf-core download ampliseq --container-system singularity

to prep ampliseq for running on an HPC, but

nextflow run nf-core-ampliseq_2.11.0/2_11_0/ -profile test,singularity --outdir ~

gave me

FATAL:  While checking container encryption: could not open image -: failed to retrieve path for -: lstat -: no such file or directory

. When downloading ampliseq, I specified that singularity images should be appended to my NXF_SINGULARITY_CACHE of

~/singularity_cache

, but that directory remains empty. What am I missing?

Unfortunately I am not really familiar with the download function. Could you try and see whether that is a problem specific to ampliseq? You can check that by attempting to download (&run) another nf-core pipeline.

I don't know either, but have you checked if the files ended up somewhere else? And, to complement Daniel's reply: Since this is a general nf-core thing, if you ask in the #CE6SDBX2A channel you have better chances of finding someone who knows.

I got the same fatal error with the bacass pipeline. I haven't seen the files show up elsewhere, but it is a big filesystem 🤷 I'll ask in #CE6SDBX2A :)