[Caml-list] why does "opam install graphics" fail?

[Tim Leonard <Tim@TimLeonard.us>]

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I tried to install the ocaml graphics package, but it fails. Any suggestions for how I can fix it?
Other than the missing graphics package, my ocaml install is working fine.

    ~/Documents/Work/Code/OCaml with graphics: opam update
    
    =-=- Updating package repositories =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    [default: http] Command started
    [default: http] Command started
    [default] synchronized from https://opam.ocaml.org
    
    ~/Documents/Work/Code/OCaml with graphics: opam upgrade
    Already up-to-date.
    
    ~/Documents/Work/Code/OCaml with graphics: opam install graphics
    The following actions will be performed:
      ∗  install graphics 1.0
    
    =-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    
    =-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    [graphics: ocamlc graphics.cma] Command started
    [ERROR] The compilation of graphics failed at "ocamlc -custom graphics.cma -o
            test".
    
    #=== ERROR while installing graphics.1.0 ======================================#
    # opam-version         1.2.2
    # os                   darwin
    # command              ocamlc -custom graphics.cma -o test
    # path                 /Users/Tim/.opam/system/build/graphics.1.0
    # compiler             system (4.04.0)
    # exit-code            2
    # env-file             /Users/Tim/.opam/system/build/graphics.1.0/graphics-14648-7afd23.env
    # stdout-file          /Users/Tim/.opam/system/build/graphics.1.0/graphics-14648-7afd23.out
    # stderr-file          /Users/Tim/.opam/system/build/graphics.1.0/graphics-14648-7afd23.err
    ### stderr ###
    # File "_none_", line 1:
    # Error: Cannot find file graphics.cma
    
    =-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    The following actions failed
      ∗  install graphics 1.0
    No changes have been performed
    
    =-=- graphics.1.0 troubleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    => This package checks whether the Graphics library was compiled.


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