Singularity container image downloading error

[ld32]

Description of the bug

$ nf-core pipelines download nf-core/airrflow --revision 5.0.0 --container-system singularity -x none --force
...
RuntimeError: Command 'nextflow config -flat nf-core-airrflow_5.0.0/5_0_0' returned non-zero error code '1':
[red]>
Error nextflow.config:88:25: pipelines_testdata_base_path is not defined
│ 88 | reference_igblast = pipelines_testdata_base_path + 'database-cache
╰ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Error nextflow.config:89:23: pipelines_testdata_base_path is not defined
│ 89 | reference_fasta = pipelines_testdata_base_path + 'database-cache/i
╰ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

ERROR ~ Config parsing failed

[ld32]

I did a little research and found a work-around:
First download the source code, fix the bug:
https://github.com/ld32/airrflow
then run the software with --singularity. That command downloaded a few containers including the airflow one.

[Vivian0105]

Hi @ld32. First of all, if you want to use nf-core/airrflow, you do not need to download the singularity container image. When you run the workflow with profile "singularity", all singularity images needed will be pulled automatically. Secondly, the error message was due to the change of nextflow syntax in the latest nextflow version. We just had new nf-core/airrflow release 5.1.0 that follow the new strict nextflow syntax. If you are using the latest nextflow version, run nf-core/airrflow 5.1.0 to avoid syntax error.