Install Order

[Joshua Root]

Neil wrote:
> (Stolen from Ryan Schmidt's mail on 29 Nov 2008, at 14:48.)
> 
> Order of Operations to Install
>      1  fetch
>      2  checksum
>      3  extract
>      4  patch
>      5  configure
>      6  build
>      7  destroot
>      8  install
>      9  deactivate
>     10  activate
>     11  clean
> 
> (I'm kind of thinking out loud here...)
> 
> Proposal:
> What if we changed the order slightly, so we do steps 1-7 for all the
> packages first, and then, if there are no errors, do 8-11?
> 
> "Why?":
> Suppose we have pkg2 which depends on pkg1.  If they both build fine,
> then we're dandy.  But if pkg2 fails, pkg1 is still installed.  If there
> are a lot of dependencies, it can be a pain to track them down.  If we
> separate the steps into two phases, then most breaks during the
> installation (which mostly happen during 5-6, I think) won't leave
> unneeded ports on the system (at least not after a clean command).
> 
> Thoughts?

<http://trac.macports.org/ticket/15260> is a proposal for a more general
way of handling the unneeded dependency problem.

Also, if pkg2 depends on pkg1, then usually pkg1 has to be active for
pkg2 to build.

- Josh