On Sun, Mar 27, 2011 at 01:21:12PM -0700, Jordan K. Hubbard wrote:
> If you're willing to "sin" from a security standpoint by allowing arbitrary 
> @exec/@unexec operations to occur, then you can just skip the tailoring and 
> leave things open-ended (or defined by policy) since you have no realistic 
> hope of controlling what packages do if that's your sin of choice.  Of 
> course, If you think you can actually express the full set of installation 
> operations as a set of properties which folks who are used to "make install" 
> can also realistically cope with then you're a smarter / better man than 
> myself and I wish you all the luck in the world, seriously, because I will be 
> observing with great interest! :-)

I'm equally skeptical that it's possible to have a useful package
system where packages don't have the ability to run arbitrary shell
commands post-install. All of the major package formats I'm familiar
with (dpkg and rpm come to mind) have this capability, and I think
applications need this flexibility.

By my count, we have 463 ports with (pre|post)-(install|activate|deactivate)
hooks. Many of these are ui_msgs that ought to be replaced with notes,
or other things that could fit into a restricted set of operations. But
it also seems very common for packages to need to update caches or
indexes using a specific tool like texhash or gtk-update-icon-cache,
and hardcoding a list of those into the package manager does not seem
like a winning idea.

For me, that count also makes an argument in favor of a package format
that includes and evaluates the TCL portfile: editing that many ports
to put the post-activate hooks in some new format is a non-trivial
task. Certainly not insurmountable, but given the desire to see
binary packages sooner rather than later, I'd rather not put any more
obstacles in the way.


Dan

-- 
Dan R. K. Ports              MIT CSAIL                http://drkp.net/
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