Get only first value.

workflow/main.nf

@@ -491,17 +491,17 @@ process softwareReport {
 
   input:
 
-  file trimReads_vf from trimReadsVersions.collect()
-  file alignReads_vf from alignReadsVersions.collect()
-  file filterReads_vf from filterReadsVersions.collect()
-  file convertReads_vf from convertReadsVersions.collect()
-  file crossReads_vf from crossReadsVersions.collect()
-  file callPeaksMACS_vf from callPeaksMACSVersions.collect()
-  file consensusPeaks_vf from consensusPeaksVersions.collect()
-  file peakAnnotation_vf from peakAnnotationVersions.collect()
-  file motifSearch_vf from motifSearchVersions.collect().ifEmpty([])
-  file diffPeaks_vf from diffPeaksVersions.collect().ifEmpty([])
-  file experimentQC_vf from experimentQCVersions.collect()
+  file trimReads_vf from trimReadsVersions.first()
+  file alignReads_vf from alignReadsVersions.first()
+  file filterReads_vf from filterReadsVersions.first()
+  file convertReads_vf from convertReadsVersions.first()
+  file crossReads_vf from crossReadsVersions.first()
+  file callPeaksMACS_vf from callPeaksMACSVersions.first()
+  file consensusPeaks_vf from consensusPeaksVersions.first()
+  file peakAnnotation_vf from peakAnnotationVersions.first()
+  file motifSearch_vf from motifSearchVersions.first().ifEmpty()
+  file diffPeaks_vf from diffPeaksVersions.first().ifEmpty()
+  file experimentQC_vf from experimentQCVersions.first()
 
   output: