Nested parameter error message prints toplevel as map

[PikalaxALT]

Below is a minimal illustrative example. In a larger case of nested parameter groups, the printed dict can be hundreds of columns wide and bury the true reason for the validation failure.

nextflow_schema.json:

{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "https://raw.githubusercontent.com/nf-core/testpipeline/master/nextflow_schema.json",
    "title": "nf-core/testpipeline pipeline parameters",
    "description": "this is a test",
    "type": "object",
    "$defs": {
        "category": {
            "type": "object",
            "title": "An interesting title",
            "properties": {
                "foo": {
                    "type": "object",
                    "anyOf": [
                        {
                            "required": ["bar"],
                            "errorMessage": "--foo.bar or --foo.baz is required"
                        },
                        {
                            "required": ["baz"],
                            "errorMessage": "--foo.bar or --foo.baz is required"
                        }
                    ],
                    "properties": {
                        "bar": {
                            "type": "string"
                        },
                        "baz": {
                            "type": "string"
                        },
                        "boop": {
                            "type": "string",
                            "default": "banana"
                        }
                    }
                }
            }
        }
    },
    "allOf": [
        {
            "$ref": "#/$defs/category"
        }
    ]
}

nextflow.config

params {
    foo {
        bar = null
        baz = null
        boop = 'banana'
    }
}

validation {
    help {
        enabled = true
    }
}

main.nf

include { validateParameters } from 'plugin/nf-schema'

process SAY_HELLO {
    input:
    val object

    output:
    val "Hello $object"

    exec: null
}

workflow {
    validateParameters()
    Channel.of(
        'world',
        params.foo.bar ?: params.foo.baz,
        params.foo.boop,
        'General Kenobi'
    ) | SAY_HELLO | view
}

commandline: nextflow run .

response:

 N E X T F L O W   ~  version 24.10.2

Launching `./main.nf` [wise_edison] DSL2 - revision: bc7026d241

ERROR ~ Validation of pipeline parameters failed!

 -- Check '.nextflow.log' file for details
The following invalid input values have been detected:

* --foo ({"boop":"banana"}): Missing required parameter(s): bar (--foo.bar or --foo.baz is required)
* --foo ({"boop":"banana"}): Missing required parameter(s): baz (--foo.bar or --foo.baz is required)
* --foo ({"boop":"banana"}): Value does not match against any of the schemas

 -- Check script 'main.nf' at line: 17 or see '.nextflow.log' file for more details
(nf-core) pikalaxalt@Mac nextflow_test %