At Gentoo main tree state of "Tue Jan 9 00:23:15 2018 +0200" eshowkw wxGTK displays: Keywords for x11-libs/wxGTK: | | u | | a a p a n r s | n | | l m h i p r m m i i s p | e u s | r | p d a p a p c x m i 6 o s 3 a | a s l | e | h 6 r p 6 p 6 8 6 p 8 s c 9 s r | p e o | p | a 4 m a 4 c 4 6 4 s k 2 v 0 h c | i d t | o --------------+---------------------------------+--------------+------- 2.8.12.1-r1 | + + + + + + + + o ~ o o o o ~ + | 5 o 2.8 | gentoo 2.8.12.1-r2 | + + + ~ + + + + o ~ o o o o ~ + | 5 o | gentoo --------------+---------------------------------+--------------+------- 3.0.2.0-r1 | + + + + + + + + o ~ o o o o ~ + | 5 # 3.0 | gentoo 3.0.2.0-r2 | + + + + + + + + o ~ o o o o ~ + | 5 o | gentoo 3.0.2.0-r3 | + + + ~ + + + + ~ ~ o o o o ~ + | 5 o | gentoo --------------+---------------------------------+--------------+------- 3.0.2.0-r300 | ~ ~ ~ ~ ~ ~ ~ ~ o ~ o o o o ~ ~ | 6 o 3.0-gtk3 | gentoo 3.0.2.0-r301 | ~ ~ ~ ~ ~ ~ ~ ~ o ~ o o o o ~ ~ | 6 # | gentoo --------------+---------------------------------+--------------+------- [I]3.0.3 | ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ o o o o ~ ~ | 6 # 3.0 | gentoo --------------+---------------------------------+--------------+------- [I]3.0.3-r300 | ~ ~ ~ ~ ~ ~ ~ ~ o ~ o o o o ~ ~ | 6 o 3.0-gtk3 | gentoo Note 3.0.2.0-r300 unused column - it should be displayed with '#', but shows up as used for some reason. I might be doing some cleanup in there soon for security regardless of this wrong claim, so this specific example might need a historical tree checkout in the future. This SLOT stuff being involved per summary is just a guess though... no KEYWORDS differences between 3.0.2.0-r30{0,1} ebuilds whatsoever