Automatic packages maintenance

[Asmodehn <asmodehn%free.fr@localhost>]

Hi everyone,

I am looking for advises...

I am planning to write some script to automate the maintenance of packages on a 
machine.
The goal is to have always the latest version of packages installed if 
possible, otherwise fallback to the last stable version.
I am using pkg_chk, and therefore I have a list of the packages I want to have 
and maintain on my machine in a pkgchk.conf

Here is what I would like to do in this script :
Using pkgsrc-current :

1- Remove packages that are installed and not in ( or needed by any packages in 
) pkgchk.conf (Optional)

2- Add packages that are in the list and not installed ("missing" packages) and 
update packages that are in the list and need to be updated

3- If some packages fails, and if a stable pkgsrc hierarchy exists on the 
system, I want to use the last stable branch instead->

Using pkgsrc-stable:

4- For each packages that update has failed before, I want to install from 
binary if available, otherwise build and install from source.


SO

1- I didnt find any way to do that with pkg_chk... seem like pkg_chk -r will 
also remove packages which have a mismatched version...
is there a way to do that that I am not aware about ?

2- With pkg_chk -au I add missing packages and update packages installed, but I 
just want to update the one listed in pkgchk.conf

3- To have pkgsrc and pkgsrc-stable installed and not having any conflict, I 
guess I have some variable to set around for the packaging tools to know what 
to do, isnt it ?

4- Which variable do I have to set to build a package everytime I do a make 
update, or a make install ? will the make install use package if it is 
available, or do I have to implement the mechanism myself somehow ?


Also I am aware there is few ways to do what I want... Please tell me if you 
think it will be better to do that in another way.
Has someone already achieve something similar and has a solution he is quite 
happy with ??

Thanks a lot for your help !

;)

--
Asmodehn