When gimp-gutenprint-5.1.0 (print/gimp-gutenprint) is installed, the files that are registred on gimp-gutenprint-5.1.0 overlaps with the files installed by gutenprint-base-5.1.0_1 (print/gutenprint-base). According to print/gimp-gutenprint/pkg-plist the only file that should be installed is libexec/gimp/2.2/plug-ins/print, but when the installation is completed, there is a long list of files registred on gimp-gutenprint-5.1.0. From the timestamp I can see that only /usr/local/libexec/gimp/2.2/plug-ins/print is in fact installed. The othere files are installed by gutenprint-base-5.1.0_1.

When I run "pkgdb -L" I get the following error message when the program reaches gimp-gutenprint-5.1.0:

 /bin/sh:Argument list too long
 can't convert nil into String

If gimp-gutenprint-5.1.0 is deinstalled, then the files of gutenprint-base-5.1.0_1  are removed.

Listing the files of gimp-gutenprint-5.1.0 gives an unexpected long list:

kafka:/home/dufberg> pkg_info -L gimp-gutenprint-5.1.0
Information for gimp-gutenprint-5.1.0:

Files:
/usr/local/libexec/gimp/2.2/plug-ins/print
/usr/local/bin/escputil
/usr/local/bin/testpattern
/usr/local/include/gutenprint/array.h
/usr/local/include/gutenprint/bit-ops.h
/usr/local/include/gutenprint/channel.h
/usr/local/include/gutenprint/color.h
/usr/local/include/gutenprint/curve-cache.h
/usr/local/include/gutenprint/curve.h
/usr/local/include/gutenprint/dither.h
/usr/local/include/gutenprint/gutenprint-module.h
/usr/local/include/gutenprint/gutenprint-version.h
/usr/local/include/gutenprint/gutenprint.h
/usr/local/include/gutenprint/image.h
/usr/local/include/gutenprint/list.h
/usr/local/include/gutenprint/module.h
/usr/local/include/gutenprint/mxml.h
/usr/local/include/gutenprint/paper.h
/usr/local/include/gutenprint/path.h
/usr/local/include/gutenprint/printers.h
/usr/local/include/gutenprint/sequence.h
/usr/local/include/gutenprint/string-list.h
/usr/local/include/gutenprint/util.h
/usr/local/include/gutenprint/vars.h
/usr/local/include/gutenprint/weave.h
/usr/local/include/gutenprint/xml.h
/usr/local/include/gutenprintui2/curve.h
/usr/local/include/gutenprintui2/gammacurve.h
/usr/local/include/gutenprintui2/gutenprintui.h
/usr/local/include/gutenprintui2/typebuiltins.h
/usr/local/lib/libgutenprint.a
/usr/local/lib/libgutenprint.la
/usr/local/lib/libgutenprint.so
/usr/local/lib/libgutenprint.so.2
/usr/local/lib/libgutenprintui2.a
/usr/local/lib/libgutenprintui2.la
/usr/local/lib/libgutenprintui2.so
/usr/local/lib/libgutenprintui2.so.1
/usr/local/libdata/pkgconfig/gutenprint.pc
/usr/local/libdata/pkgconfig/gutenprintui2.pc
/usr/local/share/gutenprint/5.1.0/xml/dither-matrix-1x1.xml
/usr/local/share/gutenprint/5.1.0/xml/dither-matrix-2x1.xml
/usr/local/share/gutenprint/5.1.0/xml/dither-matrix-4x1.xml
/usr/local/share/gutenprint/5.1.0/xml/papers.xml
/usr/local/share/gutenprint/5.1.0/xml/printers.xml
/usr/local/share/gutenprint/doc/FAQ.html
/usr/local/share/gutenprint/doc/gutenprint-users-manual.odt
/usr/local/share/gutenprint/doc/gutenprint-users-manual.pdf
/usr/local/share/gutenprint/doc/gutenprint.pdf
/usr/local/share/gutenprint/doc/reference-html/book1.html
/usr/local/share/gutenprint/doc/reference-html/c1717.html
/usr/local/share/gutenprint/doc/reference-html/c194.html
/usr/local/share/gutenprint/doc/reference-html/c1968.html
/usr/local/share/gutenprint/doc/reference-html/c200.html
/usr/local/share/gutenprint/doc/reference-html/c39.html
/usr/local/share/gutenprint/doc/reference-html/c464.html
/usr/local/share/gutenprint/doc/reference-html/c48.html
/usr/local/share/gutenprint/doc/reference-html/docbook.css
/usr/local/share/gutenprint/doc/reference-html/f14.html
/usr/local/share/gutenprint/doc/reference-html/gpl-terms.html
/usr/local/share/gutenprint/doc/reference-html/gpl.html
/usr/local/share/gutenprint/doc/reference-html/ln10.html
/usr/local/share/gutenprint/doc/reference-html/x1669.html
/usr/local/share/gutenprint/doc/reference-html/x1734.html
/usr/local/share/gutenprint/doc/reference-html/x271.html
/usr/local/share/gutenprint/doc/reference-html/x67.html
/usr/local/share/gutenprint/doc/reference-html/x79.html
/usr/local/share/gutenprint/doc/reference-html/x955.html
/usr/local/share/gutenprint/samples/colorbars4.png
/usr/local/share/gutenprint/samples/colorsweep.png
/usr/local/share/gutenprint/samples/extended.sample
/usr/local/share/gutenprint/samples/profile.jpg
/usr/local/share/gutenprint/samples/testpattern.sample
/usr/local/share/locale/cs/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/da/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/de/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/el/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/en_GB/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/es/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/fr/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/hu/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/ja/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/nb/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/nl/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/pl/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/pt/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/sk/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/sv/LC_MESSAGES/gutenprint.mo
/usr/local/share/locale/zh_TW/LC_MESSAGES/gutenprint.mo

How-To-Repeat: 1. Make sure that no "gutenprint" ports are installed, i.e. the follwing command should report no ports:
  pkg_info -I "*guten*"

2. Install  print/gutenprint-base:
  cd /usr/ports/print/gutenprint-base
  make
  make install

3. List the files installed by gutenprint-base-5.1.0_1 and make sure the
exist:
  ls -l $( pkg_info -qL  gutenprint-base-5.1.0_1 )

4. Install print/gimp-gutenprint:
  cd /usr/port/print/gimp-gutenprint
  make
  make install

5. Compare the files installed by gutenprint-base-5.1.0_1 by the files reported to be installed by gimp-gutenprint-5.1.0:
  ls -l $( pkg_info -qL gimp-gutenprint-5.1.0 )

6. Deinstall gimp-gutenprint-5.1.0:
  pkg_delete gimp-gutenprint-5.1.0 

7. Note that gutenprint-base-5.1.0_1 is now currupt:
  ls -l $( pkg_info -qL  gutenprint-base-5.1.0_1 )