Re: FreeBSD ports community is broken [port building configuration notes]

On Sun, Feb 18, 2024 at 10:21 PM Mark Millard <marklmi@yahoo.com> wrote:
>
> On Feb 18, 2024, at 17:23, Aryeh Friedman <aryehfriedman@gmail.com> wrote:
>
> > On Sun, Feb 18, 2024 at 3:21 PM Mark Millard <marklmi@yahoo.com> wrote:
> >>
> >> I fully agree that poudriere's systematic behavior
> >> rebuilds more than the likes of portmaster [but fails
> >> less often].
> >>
> >>
> >> As stands there are tradeoffs between use of portmaster
> >> (and the like) vs. use of poudriere (/synth?). No one
> >> has produced an alternative that avoids the tradeoffs
> >> as far as I know. So one picks between the tradeoffs
> >> by the choice of which way to build.
> >
> > The reason why no alternative has been produced yet is make it self is
> > broken at the theoretical level.  Instead of doing a blond DFS it
> > should build the entire DAG and then topolocgically walk it.    See
> > Recursive Make Considered Harmful by P. Miller --
> > https://accu.org/journals/overload/14/71/miller_2004/ (republished).
> > While the DAG for the entire ports system (and for each port) is too
> > big the DAG of what ports to do in what order is not and can easily be
> > extracted from the ports make file.   So there is really no excuse for
> > excessive building (just a question of converting it all to DAG --
> > devel/cook does this and likely can be shoe horned into being a hybrid
> > of allowing each port to use make recursively but at the top levle
> > using a DAG).
>
> FYI:
>
> poudriere uses a prioritized topological sort of the package dependencies
> made up front during the bulk build. There are files with the content
> during the bulk run:
>
> ${MASTER_DATADIR}/pkg_deps is used to produce a temporary:
>
> ${MASTER_DATADIR}/pkg_deps.ptsort which is, in turn, used to produce:
>
> ${MASTER_DATADIR}/pkg_deps.priority which is used, in turn, to set up
> the priority hash that is used.
>
> There are checks for having cycles (that would invalidate the DAG
> status).
>
>
> Side note: devel/cook disapepared upstream some time ago and expired in
> the ports tree and was removed at the end of 2023.

Planning to revive it when I get a little bit of time (found out was
removed a few months ago and I use it)
>
>
> ===
> Mark Millard
> marklmi at yahoo.com
>