Problem on 8-STABLE installing ports: pkg_add: could not find package broken_contents

[parv at pair.com]

(-ports@ people, please CC me.)

I am having problems installing ports via "portmaster" or "make" on
8-STABLE & ports tree is at r354272 during "pkg_add" stage.

Error via "portmaster x11-toolkits/gtk20" ...

  ===>  Installing for gtk2-2.24.22_3
  ===>  Checking if x11-toolkits/gtk20 already installed
  pkg_add: could not find package broken_contents !
  *** Error code 1

  Stop in /misc/ports/x11-toolkits/gtk20.
  *** Error code 1


... or error via "make install" ...

  ===>  Checking if x11-toolkits/gtk20 already installed
  pkg_add: could not find package broken_contents !
  *** Error code 1

  Stop in /misc/ports/x11-toolkits/gtk20.
  ... done [1] install in /misc/ports/x11-toolkits/gtk20


I searched the web but could not find a solution; did find something
related ...

  - identify the installed ports' +CONTENTS with empty "@pkgdep"
    http://www.freebsddiary.org/phorum/read.php?f=4&i=341&t=341
    https://forums.freebsd.org/viewtopic.php?&t=13899


Above error has started happening recently. Earlier, same problem
was with libgsf, which I had installed as a package instead and
added "+IGNOREME" for portmaster to skip it.

Is this PR ...

  devel/libgsf fix installation of GObject Introspection files
  http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/188522


... related or of any significance?

What is creating broken package contents (manifest?) of newly built
port to be installed? Or, how could I go finding the culprit?


  - parv

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