Importing manifest v1 without sample names produce unclear error

[ChrisKeefe]

Bug Description
When users attempt to import fastq files, but fail to include sample ids, the following error is generated:

There was a problem importing Manifest.csv:
Missing one or more files for SingleLanePerSampleSingleEndFastqDirFmt: '.+_.+_L[0-9][0-9][0-9]_R[12]_001.fastq.gz

Steps to reproduce the behavior

1. Activate QIIME 2 2019.4
2. Create a manifest file without sample IDs (see forum post for details)
3. Import:
   e.g.

qiime tools import \
--type SampleData[SequencesWithQuality] \
--input-path ./Manifest.csv \
--output-path single-end-demux.qza \
--input-format SingleEndFastqManifestPhred33

Expected behavior
This should render a more user-friendly error message.

Computation Environment

• OS: unix-like
• QIIME 2 2019.4

Questions

1. Does this only impact manifest imports?

References

1. forum x-ref

[thermokarst]

Hey @ChrisKeefe, this kind of behavior wouldn't surprise me for this format, we had a few issues around the V1 manifest formats. Luckily we have replaced these with the new V2 formats (V1 formats are "deprecated," although we don't have plans to remove the V1 formats just yet), and I think the V2 error raised for your case above makes a little more sense here, although it could be cleaned up a bit, too:

echo "id\tabsolute-filepath\npeanut.fastq.gz" > manifest.tsv
qiime tools import \
  --type 'SampleData[SequencesWithQuality]' \
  --input-path manifest.tsv \
  --output-path single-end-demux.qza \
  --input-format SingleEndFastqManifestPhred33V2

There was a problem importing manifest.tsv:

  manifest.tsv is not a(n) SingleEndFastqManifestPhred33V2 file:

  'absolute-filepath' is not a column in the metadata. Available columns: