[gentoo-portage-dev] idea for portage: cascading

[gentoo-portage-dev] idea for portage: cascading

[Michael Haubenwallner]

Hi all,

looking around for a pkg-mgmt-tool for our source-packages, which
works on unix-like platforms such as HP-UX,AIX,SunOS,Linux and Cygwin,
i've not been very lucky yet.

So i startet to write a new one using top-level GNU-Makefiles,
just for our requirements, intended to be used until another,
more professional one, becomes useful for us.

One feature i want to implement soon is "cascading" (i'd call it so),
and i think this idea might be useful for portage, and would help
portage to get useful for us (yet missing platform indepency).

Assume you've one top-level installation of the system, which might
be basically managed by the system-imposed pkg-manager (rpm, deb,
portage, whatever on HP-UX/AIX/Sun/Cygwin).

On top of this, on non-portage-managed systems there's one installation
of portage with all of the system-level packages (libc, compiler, perl,
python, ...) injected (i think this is what portage calls injection).

Then, in some subdirectory (might be versioned), there would be another
portage installation, where one package with another version (or SLOT?)
is compiled, and all the depending packages are recompiled, while the
independants would be inherited from the top-level installation.
Let this installation be for all the developers of one project,
which requires a special version of one package.

Additionally, there's a third installation, again with another version 
(or SLOT?) from another package, and all the dependants are compiled
again, while the independants are inherited.
For instance, this installation would be for one developer, who does
integration-test a new version of this package.

Hoping not to waste your time,
    Michael
-- 
Michael Haubenwallner                    SALOMON Automation GmbH
Forschung & Entwicklung                  A-8114 Friesach bei Graz
mailto:michael.haubenwallner@salomon.at  http://www.salomon.at


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