Boolean parameter validation failure in nf-core/rnaseq 3.26.0 with Nextflow 26.04

Hi,

I encountered a parameter validation issue when running nf-core/rnaseq 3.26.0 with Nextflow 26.04.1.

Environment:

Nextflow: 26.04.1 build 12646
nf-core/rnaseq: 3.26.0
Java: 17
Executor: Singularity
OS: Ubuntu Linux

Command:

nextflow run nf-core/rnaseq \
-r 3.26.0 \
-profile singularity \
--input /path/to/samplesheet.csv \
--fasta /path/to/GRCh38.fa \
--gtf /path/to/GRCh38.gtf \
--outdir rnaseq_results \
--aligner star_salmon \
--remove_ribo_rna
The pipeline stops during parameter validation:
ERROR ~ Validation of pipeline parameters failed!

The following invalid input values have been detected:

--remove_ribo_rna (true): Value is [string] but should be [boolean]
The same command works normally with Nextflow 25.10.2 using the same nf-core/rnaseq version (3.26.0).

It seems that the boolean parameter passed from the command line is interpreted as a string in Nextflow 26.04.1, causing nf-schema validation to fail.

Could you please check whether this is a compatibility issue between Nextflow 26.04.1 and nf-schema validation?

Thanks.

Start by reproducing the reported command with nf-core/rnaseq 3.26.0 under Nextflow 26.04.1, then compare its parameter handling with Nextflow 25.10.2. Trace the validation path for --remove_ribo_rna and the nf-schema integration; done means the same boolean input validates correctly without regressing older behavior. No source file or test is named in the report.