remove def from nextflow.config and add trace_report_suffix param

Author: mirpedrol

nf_core/pipeline-template/nextflow.config

@@ -52,6 +52,7 @@ params {
     version                      = false
     {%- if test_config %}
     pipelines_testdata_base_path = 'https://raw.githubusercontent.com/nf-core/test-datasets/'{% endif %}
+    trace_report_suffix          = new java.util.Date().format( 'yyyy-MM-dd_HH-mm-ss')
 
     {%- if nf_core_configs -%}
     // Config options
@@ -249,22 +250,21 @@ set -C # No clobber - prevent output redirection from overwriting files.
 // Disable process selector warnings by default. Use debug profile to enable warnings.
 nextflow.enable.configProcessNamesValidation = false
 
-def trace_timestamp = new java.util.Date().format( 'yyyy-MM-dd_HH-mm-ss')
 timeline {
     enabled = true
-    file    = "${params.outdir}/pipeline_info/execution_timeline_${trace_timestamp}.html"
+    file    = "${params.outdir}/pipeline_info/execution_timeline_${params.trace_report_suffix}.html"
 }
 report {
     enabled = true
-    file    = "${params.outdir}/pipeline_info/execution_report_${trace_timestamp}.html"
+    file    = "${params.outdir}/pipeline_info/execution_report_${params.trace_report_suffix}.html"
 }
 trace {
     enabled = true
-    file    = "${params.outdir}/pipeline_info/execution_trace_${trace_timestamp}.txt"
+    file    = "${params.outdir}/pipeline_info/execution_trace_${params.trace_report_suffix}.txt"
 }
 dag {
     enabled = true
-    file    = "${params.outdir}/pipeline_info/pipeline_dag_${trace_timestamp}.html"
+    file    = "${params.outdir}/pipeline_info/pipeline_dag_${params.trace_report_suffix}.html"
 }
 
 manifest {

nf_core/pipeline-template/nextflow_schema.json

@@ -229,7 +229,13 @@
                     "description": "Base URL or local path to location of pipeline test dataset files",
                     "default": "https://raw.githubusercontent.com/nf-core/test-datasets/",
                     "hidden": true
-                }{% endif %}
+                }{% endif %},
+                "trace_report_suffix": {
+                    "type": "string",
+                    "fa_icon": "far calendar",
+                    "description": "Suffix to add to the trace report filename. Default is the date and time in the format yyyy-MM-dd_HH-mm-ss.",
+                    "hidden": true
+                }
             }
         }
     },