* emerge sync ;layman -S

  * emerge -1av gcc 
  * if any update, gcc-config, emerge -1 libtool, emerge -P gcc, 
  ** on major gcc upgrade: revdep-rebuild --library libstdc++.so -- --exclude sys-devel/gcc

  * emerge -uDav --newuse world

  * etc-update

  * daemon restarts and new version configuration as necessary

  * perl-cleaner --all
  * python maint - package.use (*/* PYTHON_TARGETS: python3_7 python3_8) and --newuse, eselect python and remove old. 

  * kernel upgrade (and cleanup old)

  * preserved
  * depclean
  * revdep
  * deal with installed but abandonned ebuilds: equery list  -F '[$location] [$mask] $cpv:$slot [$repo]' '*' | grep '??'
  * news
  * take a look at overlays - which ones used/unused (eix-update ; eix -c -J)
  * clean up keywords file - find unused atoms (eix-test-obsolete)

Redundant
  * move distfiles/* to mystic's archive