pango should depend on ImageMagick

[macports@…]

$ pango-view /etc/passwd 
pango-view: When running ImageMagick 'display' command: Failed to execute child process "display" (No such file or directory)

After installing ImageMagick pango-view doesn't complain.

$ port installed pango
The following ports are currently installed:
  pango @1.24.5_0+macosx+no_x11+quartz+universal (active)

[ryandesign@…]

ImageMagick is a pretty heavy dependency, but I do see code in pango that does use it at runtime under certain conditions. Anyone know what those conditions are? On my system, pango-view works without ImageMagick installed, but I did not select pango's no_x11 or quartz variants.

[maidaro@…]

Cc Me!

[ryandesign@…]

pango cannot depend on ImageMagick because ImageMagick can depend on pango (via a variant: see #34231) and that would cause a circular dependency which MacPorts does not support. Pango users wishing to use ImageMagick-based features of pango should manually install the ImageMagick port.