From: pk@pk.pk   
      
   Aragorn wrote:   
      
   > Xen, the Xen kernel sources and the Xen tools are masked as well in   
   > Portage, but I could install them nevertheless by adding them to   
   > */etc/portage/package.keywords* without the - in my case - "~amd64" and   
   > then simply emerging them.  This is with the latest version of Portage.   
      
   Yes, this exploits the "missing keyword equals unstable" feature, as per man   
   portage:   
      
   package.keywords   
                        Per-package  KEYWORDS.   Useful for mixing unstable   
                        packages in with a normally stable system or vice   
                        versa.  This will allow ACCEPT_KEYWORDS to be augmented   
                        for a single package.   
      
                        Format:   
                        - comment lines begin with # (no inline comments)   
                        - one DEPEND atom per line followed by additional   
                          KEYWORDS   
                        - lines without any KEYWORDS imply unstable host arch   
      
   However, this was not true in the past and might change in the future as   
   well. Thus it's always better to explicitly specify the architecture   
   (~amd64 in your case).   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)