Portage features - dpopchev/howto-quick-setup-gentoo GitHub Wiki

make conf wiki

Features:

• candy

  Enable a special progress indicator when emerge.

• downgrade-backup

  Create a backup of the installed version before it is unmerged (if a binary package of the same version does not already exist)

• unmerge-backup

  Create a backup of each package before it is unmerged (if a binary package of the same version does not already exist)

grep -P FEATURE /etc/make.conf
FEATURE="${FEATURE} candy"
FEATURE="${FEATURE} downgrade-backup"
FEATURE="${FEATURE} unmerge-backup"

NOTE:

• interesting to try out buildpkg or buildsyspkg
• A note on build package emerge counterpart: enabling feature will prevent emerge --ignore-default-opts take effect