On Friday 21 of November 2014 03:18:29 Mike Bird wrote:
> You almost certainly don't need to read this.
>
> I'm posting this here for the record in case someone
> wants to check TDE for circular dependencies in future.
>
> Bugs have been filed for all circular dependencies
> found in a standard --with-recommendations TDE R14 RC1
> Wheezy install.
>
>
>
> (1) Why check for circular dependencies
>
> Although apt and dpkg do their best to handle any circular
> dependencies they encounter, circular dependencies can cause
> problems and a generally discouraged.
>
>
>
> (2) How to get rid of circular dependencies
>
> Usually one finds the least important dependency in the circle
> and changes it to a recommendation.
>
> If you're dealing with a maze rather than a circle you may
> to have convert several dependencies.
>
>
>
> (3) tsort non-method
>
> I first thought of using tsort on the dependencies listed
> in Packages.gz.  However versioned dependencies, provides,
> conflicts, etc make this impractical.
>
>
>
> (4) Recommended elegant automatic method
>
> foreach PACKAGE in TRINITY {
>   start with a minimal (non-TDE) base system
>   install PACKAGE and all its dependencies
>   remove just PACKAGE
> }
>
> There should be no errors installing or removing.
>
> However this method is somewhat time consuming even if
> you arrange it to use snapshots in a chroot so you can
> quickly revert to your minimal base system.
>
>
>
> (5) Grungy manual method
>
> Due to time constraints I used the following method for
> TDE R14 RC1.
>
> start with a non-TDE base system
> let TARGET be a list of all installed packages
> apt-get --install-recommends install desktop-base-trinity kde-trinity
> while (true) {
>   let CURRENT be a list of all installed packages
>   let REMOVE be TARGET (join -v) CURRENT
>   let BUSY = false
>   do {
>     foreach PACKAGE in REMOVE {
>       Try to remove PACKAGE, if successful set BUSY = true
>     }
>   while (BUSY);
>   break if only TARGET packages are installed
>   manually figure out why no remaining package is removable
>   note and remove any set of co-dependent packages
> }
>
> This is overall a lot faster than the automatic method but
> it requires more manual work.  The first time the removals
> stalled there were 76 packages still awaiting removal and
> you then have to look through these to find the loops.
>
>
>
> (6) Loops found in Wheezy TDE R14 RC1
>
>     (a) Bug #2194
>         kcontrol-trinity
>         konqueror-nsplugins-trinity
>         konqueror-trinity
>         konsole-trinitytdebase-trinity
>         ksmserver-trinity
>         tdebase-runtime-data-common-trinity
>
>     (b) Bug #2197
>         libkcal2b-trinity
>         libtdepim1a-trinity
>
>     (c) Pre-existing Debian Bug #626319
> 	gnuift
> 	gnuift-perl
>

Mike, good job! Both bug reports I set as a blocking for R14.

-- 
Slávek