Bugzilla Bug 129398

This is using sys-apps/portage-2.1_pre7-r5.

If I run the command

  emerge --pretend --verbose --deep --update --newuse world"

I see this output:

  These are the packages that would be merged, in order:

  Calculating world dependencies                             ... done!  

  Total size of downloads: 0 kB

However, if I run the command

  emerge --pretend --verbose =dev-perl/XML-Parser-2.34
=media-gfx/gthumb-2.6.8-r2 =media-libs/gd-2.0.32

I get this output:

  These are the packages that would be merged, in order:

  Calculating dependencies    ... done!
  [ebuild   R   ] dev-perl/XML-Parser-2.34  USE="-minimal%" 0 kB 
  [ebuild   R   ] media-gfx/gthumb-2.6.8-r2  USE="exif% jpeg png tiff -debug
-gphoto2" 0 kB 
  [ebuild   R   ] media-libs/gd-2.0.32  USE="jpeg png truetype -fontconfig%
-xpm%" 573 kB 

  Total size of downloads: 573 kB

Notice the USE flags marked with "%" to indicate they were not used by
the most recent emerges of the packages.

What is happening here is that these ebuilds have been modified since
I emerged them to refer to additional USE flags.

If I now toggle the "xpm" USE flag, --newuse does not notice that gd
should be re-emerged.

The only way I see to solve this is for --newuse to notice these
packages and make them candidates for re-emerging (regardless of
whether the status of the new USE flags have changed).

*** This bug has been marked as a duplicate of 116955 ***