>>> Emerging : portage://x11-base/xorg-server-26.0.99.903:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ keyword portage://x11-base/xorg-drivers-9999 (**)
             │ keyword portage://x11-base/xorg-server-26.0.99.903 (**)

 └─step  2─┤ download  portage://dev-libs/libevdev-1.13.7
             │           └─ file ─┤ 461.37 Kb  	 libevdev-1.13.7.tar.xz
             │ download  portage://gui-libs/display-manager-init-1.1.2-r3
             │ download  portage://media-fonts/font-util-1.4.2
             │           └─ file ─┤ 149.18 Kb  	 font-util-1.4.2.tar.xz
             │ download  portage://media-libs/libepoxy-1.5.10-r3
             │           └─ file ─┤ 324.29 Kb  	 libepoxy-1.5.10.tar.gz
             │ download  portage://sys-libs/mtdev-1.1.7
             │           └─ file ─┤ 294.92 Kb  	 mtdev-1.1.7.tar.bz2
             │ download  portage://x11-apps/iceauth-1.0.11
             │           └─ file ─┤ 137.25 Kb  	 iceauth-1.0.11.tar.xz
             │ download  portage://x11-apps/xauth-1.1.5
             │           └─ file ─┤ 161.60 Kb  	 xauth-1.1.5.tar.xz
             │ download  portage://x11-apps/xinit-1.4.4
             │           └─ file ─┤ 158.69 Kb  	 xinit-1.4.4.tar.xz
             │ download  portage://x11-apps/xkbcomp-1.5.0-r2
             │           └─ file ─┤ 242.18 Kb  	 xkbcomp-1.5.0.tar.xz
             │ download  portage://x11-apps/xrdb-1.2.3-r2
             │           └─ file ─┤ 140.71 Kb  	 xrdb-1.2.3.tar.xz
             │ download  portage://x11-base/xorg-drivers-9999
             │           └─ live ─┤ live   	 git repository
             │ download  portage://x11-base/xorg-server-26.0.99.903
             │           └─ file ─┤ 2.85 Mb  	 xorg-server-26.0.99.903.tar.xz
             │ download  portage://x11-drivers/xf86-input-evdev-2.11.0
             │           └─ file ─┤ 343.70 Kb  	 xf86-input-evdev-2.11.0.tar.xz
             │ download  portage://x11-drivers/xf86-input-vmmouse-13.2.0
             │           └─ file ─┤ 278.01 Kb  	 xf86-input-vmmouse-13.2.0.tar.xz
             │ download  portage://x11-drivers/xf86-video-vesa-2.6.0
             │           └─ file ─┤ 269.11 Kb  	 xf86-video-vesa-2.6.0.tar.xz
             │ download  portage://x11-libs/libXfont2-2.0.9
             │           └─ file ─┤ 467.62 Kb  	 libXfont2-2.0.9.tar.xz
             │ download  portage://x11-libs/libpciaccess-0.19
             │           └─ file ─┤ 63.21 Kb  	 libpciaccess-0.19.tar.xz
             │ download  portage://x11-libs/libxcvt-0.1.3
             │           └─ file ─┤ 9.45 Kb  	 libxcvt-0.1.3.tar.xz
             │ download  portage://x11-libs/libxkbfile-1.2.0
             │           └─ file ─┤ 56.50 Kb  	 libxkbfile-1.2.0.tar.xz
             │ download  portage://x11-misc/xbitmaps-1.1.4
             │           └─ file ─┤ 111.93 Kb  	 xbitmaps-1.1.4.tar.xz
             │ download  portage://x11-misc/xkeyboard-config-2.48
             │           └─ file ─┤ 930.97 Kb  	 xkeyboard-config-2.48.tar.xz

Total: 23 actions (2 keywords, 21 downloads), grouped into 2 steps.
       7.34 Mb to be downloaded.



>>> Assumptions taken during proving & planning:

  Keyword acceptance (2 packages):
  Add to /etc/portage/package.accept_keywords:
    x11-base/xorg-drivers **
    x11-base/xorg-server **


Error The proof for your build plan contains domain assumptions. Please verify:


>>> Domain assumptions

- Unsatisfied constraints for run dependency: 
  >=x11-base/xorg-server-9999 [ udev ]

  required by: portage://x11-base/xorg-drivers-9999


>>> Bug report drafts (Gentoo Bugzilla)

---
Summary: portage://x11-base/xorg-drivers-9999: unsatisfied_constraints dependency on x11-base/xorg-server

Affected package: portage://x11-base/xorg-drivers-9999
Dependency: x11-base/xorg-server
Phases: [run]

Unsatisfiable constraint(s):
  >=x11-base/xorg-server-9999

Observed:
  portage-ng reports no available candidate satisfies the above constraint(s).
  Available versions in repo set (sample, first 4 of 4): [21.1.24,21.1.25,26.0.99.903,9999]

Potential fix (suggestion):
  Review dependency metadata in portage://x11-base/xorg-drivers-9999; constraint set: [constraint(greaterequal,9999,[])].