User types defined inline (inside the CWL) are not parsed properly

[ghost]

#!/usr/bin/env cwl-runner

# Inline schemadef

class: CommandLineTool
cwlVersion: v1.0

requirements:
  SchemaDefRequirement:
    types:
      - name: user_type1
        type: record
        fields:
            - name: prop
              type: string

inputs:
  in1: user_type1

outputs:
  out1:
    type: user_type1
    outputBinding:
      outputEval: $(inputs.in1)

baseCommand: []
arguments: []

Consider moving components of the sbpack library here and then reusing it, since the code has large overlaps.