Force reinstallation of all packages installed from ports-2012 (gentoo)?

[biocyberman]

I asked about a problem with upgrade to meta repo here:

I got most of the things to work now, but the following issue of ebuild source conflicts keeps bugging me:

# emerge -av "=dev-qt/qtwebengine-5.9.2:5/5.9::kde-kit" "=dev-qt/qtgui-5.9.2:5/5.9::kde-kit" "=dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit"                                                                                                                                                                           !3940
Password:
!!! Repository 'x-portage' is missing masters attribute in '/usr/local/portage/metadata/layout.conf'
!!! Set 'masters = core-kit' in this file for future compatibility

 * IMPORTANT: config file '/etc/portage/package.use' needs updating.
 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.

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

Calculating dependencies... done!
[ebuild     U  ] dev-qt/qtgui-5.9.2:5/5.9::kde-kit [5.7.1:5/5.7::gentoo] USE="dbus gif jpeg libinput* png udev xcb -accessibility -debug -egl -eglfs -evdev -gles2 -ibus {-test} -tslib -tuio -vnc% (-gtk%)" 0 KiB
[ebuild     U  ] dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit [5.7.1:5/5.7::gentoo] USE="png xcb -debug -gles2 -gtk% {-test}" 0 KiB
[ebuild     U  ] dev-qt/qtdeclarative-5.9.2:5/5.9::kde-kit [5.7.1:5/5.7::gentoo] USE="widgets xml -debug -gles2 -jit -localstorage {-test}" 0 KiB
[ebuild     U  ] dev-qt/qtwebchannel-5.9.2:5/5.9::kde-kit [5.7.1:5/5.7::gentoo] USE="qml -debug {-test}" 0 KiB
[ebuild     U  ] dev-qt/qtwebengine-5.9.2:5/5.9::kde-kit [5.7.1-r2:5/5.7::kde-kit] USE="alsa pax_kernel pulseaudio system-ffmpeg system-icu widgets -bindist -debug -geolocation {-test}" 0 KiB

Total: 5 packages (5 upgrades), Size of downloads: 0 KiB

Oops! Conflicts have been encountered:

>>> =dev-qt/qtgui-5.9.2:5/5.9::kde-kit, wants =dev-qt/qtgui-5.9.2:5/5.9::kde-kit
>>> dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge, wants ~dev-qt/qtgui-5.9.2[gles2=,png=,xcb?]
>>> dev-qt/qtwebengine-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge, wants ~dev-qt/qtgui-5.9.2
>>> dev-qt/qtdeclarative-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge, wants ~dev-qt/qtgui-5.9.2[gles2=]
>>> dev-qt/qtsvg-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtgui-5.7.1
>>> dev-qt/qtwebkit-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtgui-5.7.1
>>> dev-qt/qtopengl-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtgui-5.7.1[-gles2]
>>> dev-qt/qtwidgets-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtgui-5.7.1[-gles2,png,xcb]
>>> dev-qt/qtprintsupport-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtgui-5.7.1[-gles2]

My candidates are:

>>> dev-qt/qtgui-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge has SLOT 5/5.9
>>> dev-qt/qtgui-5.7.1:5/5.7::gentoo, installed has SLOT 5/5.7
>>> dev-qt/qtdeclarative-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge, wants ~dev-qt/qtwidgets-5.9.2[gles2=]
>>> =dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit, wants =dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit
>>> dev-qt/qtwebengine-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge, wants ~dev-qt/qtwidgets-5.9.2
>>> dev-qt/qtsvg-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtwidgets-5.7.1
>>> dev-qt/qtprintsupport-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtwidgets-5.7.1[-gles2]
>>> dev-qt/qtopengl-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtwidgets-5.7.1[-gles2]
>>> dev-qt/qtwebkit-5.7.1:5/5.7::gentoo, installed, wants ~dev-qt/qtwidgets-5.7.1

My candidates are:

>>> dev-qt/qtwidgets-5.9.2:5/5.9::kde-kit, ebuild scheduled for merge has SLOT 5/5.9
>>> dev-qt/qtwidgets-5.7.1:5/5.7::gentoo, installed has SLOT 5/5.7


We hope this informational output has been useful in identifying the
problem. We are continually working to reduce conflicts. Do not
hesitate to report a bug at https://bugs.funtoo.org. Thank you! :)

 

How do I force reinstallation of all packages that were installed from the old repo?

 

 

[biocyberman]

Found it!

The trick is "# emerge -auDN --newrepo @world". The '--newrepo' option is crucial.

Update 19 Oct 2017:

The command above works for more than 1000 packages I have installed, except the qt* packages. For these stubborn qt* packages I had to do the following:

emerge -Cav "dev-qt/qt*" 
 * This action can remove important packages! In order to be safer, use        
 * `emerge -pv --depclean <atom>` to check for reverse dependencies before              
 * removing packages.                                                                 
                                                                                
>>> These are the packages that would be unmerged:                            
                                                                      
 dev-qt/qtsql                                                            
    selected: 5.9.2                                                        
   protected: none                                                             
     omitted: none                                                                               
                                                                                    
 dev-qt/qtx11extras                                                          
    selected: 5.7.1                                                     
   protected: none                                                         
     omitted: none                                                              
                                                                         
 ... truncated for clarity ...                                                                 
                                                                                              
 dev-qt/qtprintsupport                                                                  
    selected: 5.7.1                                                                                   
   protected: none                                                                                  
     omitted: none                                           
 All selected packages: =dev-qt/qtwidgets-5.7.1 =dev-qt/qtgui-4.8.7 =dev-qt/qtcore-5.9.2 =dev-qt/qtwebchannel-5.7.1 =dev-qt/qtpositioning-5.9.2 =dev-qt/qtopengl-4.8.7 =dev-qt/qtcore-4.8.7-r2 =dev-qt/qtwebengine-5.7.1-r2 =dev-qt/qtgui-5.7.1 =dev-qt/qtsql-5.9.2 =dev-qt/qtprintsupport-5.7.1 =dev-qt/qtdeclarative-5.7.1 =
dev-qt/qtxmlpatterns-5.9.2 =dev-qt/qtdbus-5.9.2 =dev-qt/qtsvg-4.8.7 =dev-qt/qtopengl-5.7.1 =dev-qt/qtxml-5.9.2 =dev-qt/qttranslations-4.8.7 =dev-qt/qtdbus-4.8.7 =dev-qt/qtchooser-0_p20170803 =dev-qt/qtwebkit-5.7.1 =dev-qt/qttest-5.9.2 =dev-qt/qtnetwork-5.9.2 =dev-qt/qtsvg-5.7.1 =dev-qt/qtscript-4.8.7 =dev-qt/qtconcu
rrent-5.9.2 =dev-qt/qtx11extras-5.7.1

>>> 'Selected' packages are slated for removal.
>>> 'Protected' and 'omitted' packages will not be removed.

Would you like to unmerge these packages? [Yes/No] Yes

Next, run this command:
 

# Here I have renamed the /usr/portage directory for backup
emerge -av @preserved-rebuild