_ [debian] upstart?

The future of the boot system in DebianDebian、ブートシステムで「Upstart」採用へ で既報だけど、sysvinit から upstart になるという話。ちょっと試してみるか、と思ったけど、

# aptitude install upstart
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information... Done
Initializing package states... Done
The following NEW packages will be installed:
  upstart{b}
0 packages upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 493kB of archives. After unpacking 1106kB will be used.
The following packages have unmet dependencies:
  upstart: Conflicts: sysvinit but 2.87dsf-10 is installed.

素直に置き換わってくれるわけではなく、

# aptitude remove sysvinit
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information... Done
Initializing package states... Done
The following packages will be REMOVED:
  sysvinit
0 packages upgraded, 0 newly installed, 1 to remove and 1 not upgraded.
Need to get 0B of archives. After unpacking 266kB will be freed.
The following ESSENTIAL packages will be REMOVED!
  sysvinit

WARNING: Performing this action will probably cause your system to break!
         Do NOT continue unless you know EXACTLY what you are doing!
To continue, type the phrase "I am aware that this is a very bad idea":

先に sysvinit を消すにもためらわれるので、中止。