[MacPorts] #64530: gscan2pdf: put license_noconflict allowed for libpaper?

[MacPorts]

#64530: gscan2pdf: put license_noconflict allowed for libpaper?
--------------------+-----------------------
 Reporter:  tenzap  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  gscan2pdf
--------------------+-----------------------
 According to the builder logs:
 {{{
 "gscan2pdf" is not distributable because its license "GPL-3" conflicts
 with license "GPL-2" of dependency "libpaper"
 Staging private archive for upload:
 gscan2pdf-2.12.4_0.darwin_15.x86_64.tbz2
 }}}

 I checked the dependency tree:

 gscan2pdf <- ImageMagick <- ghostscript <- libpaper

 Aso, there is no reference to the headers of libpaper in gscan2pdf
 sources.

 So, is it ok to add this in the portfile?
 {{{
 license_noconflict libpaper
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/64530>
MacPorts <https://www.macports.org/>
Ports system for macOS