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Print a system dependencies tree #45

Description

@vindarel

This snippet was written by @svetlyak40wt on https://gist.github.com/svetlyak40wt/a8ed639bf8fe07caed1531611bcf932d, referenced in print-licences.

(defun print-dependency-graph (system-name &key (level 0) (max-level most-positive-fixnum))
  (when (= level max-level)
    (return-from print-dependency-graph))
  (loop repeat level
        do (format t "  "))
  (format t "~A~%" system-name)
  (typecase system-name
    ((or string symbol)
     (let ((system (asdf/system:find-system system-name)))
       (loop for dep in (asdf/system:system-depends-on system)
              do (print-dependency-graph dep :level (1+ level) :max-level max-level))))))

Usage:

(print-dependency-graph "mito" :max-level 3)
;; =>
mito
  mito-core
    (VERSION dbi 0.9.5)
    sxql
    cl-ppcre
    closer-mop
    dissect
    trivia
    cl-reexport
    local-time
    uuid
    alexandria
  mito-migration
    mito-core
    sxql
    dbi
    closer-mop
    cl-reexport
    esrap
    alexandria
    uiop
    chipz
NIL

Related, to get a graph of dependencies:

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