lilypond-common-includes/scm/yaml_parser.scm

(use-modules (ice-9 popen) (ice-9 textual-ports) (json parser))

(define (yml-file->scm filename)
  (let* ((python_cmd (string-append "import sys, yaml, json; print(json.dumps(yaml.safe_load(open('" filename "'))))"))
          (pipe (open-pipe* OPEN_READ "python3" "-c" python_cmd))
          (json (get-string-all pipe)))
    (close-pipe pipe)
    (json-string->scm json)))

(define (parse-yml-file filename) (resolve-inherits (yml-file->scm filename)))