nixos: environment.pathsToLink += some desktop dirs

Close #9622.
(adding common desktop locations and locations specified in
http://standards.freedesktop.org/menu-spec/1.1/)

authored by obadz and committed by Vladimír Čunát afdfe76b 119a6e33

+6
+6
nixos/modules/config/system-path.nix
··· 106 106 "/lib" 107 107 "/man" 108 108 "/sbin" 109 + "/share/applications" 110 + "/share/desktop-directories" 109 111 "/share/doc" 110 112 "/share/emacs" 113 + "/share/icons" 111 114 "/share/info" 112 115 "/share/man" 116 + "/share/menus" 117 + "/share/mime" 113 118 "/share/nano" 114 119 "/share/org" 115 120 "/share/terminfo" 121 + "/share/themes" 116 122 "/share/vim-plugins" 117 123 ]; 118 124