Yet Another Dependency Proposal: Packages and PackageVersions,
that is it
Markus Gaelli
gaelli at emergent.de
Wed Nov 19 00:26:34 UTC 2003
Hi folks,
after having used envy for six years and Store for one I also feel
obliged ;-)
to make a suggestion.
I would like to have a model with packages and package versions. That
is it.
I think the difference to the package / configuration proposal is, that
in my
suggestion the code can be stored in package versions,
which _can_ refer to other versioned entities.
But also one can try to load the newest possible configuration of a
package.
This just tries to load all the newest versions of it and of all its
prerequisites.
If that works, fine, you can just store that as a new version.
Here again that boring SmaCC-Development example to illustrate
some possible usage:
Package(SmaCC-Development) >> versions
-> #(
PackageVersion(SmaCC-Development 1.2)
PackageVersion(SmaCC-Development 1.1))
PackageVersion(SmaCC-Development 1.2) >> prerequisiteVersions
-> #(
PackageVersion(SmaCC-Runtime 1.1)
PackageVersion(RB 1.7623) ...)
Package(SmaCC-Development) >> untestedLatestPrerequisiteVersions
-> #(
PackageVersion(SmaCC-Runtime 1.1)
PackageVersion(RB 2.0) ...)
Note that you could try to automatically load the newest/best(?)
versions of
a Package based on this (computed) untestedLatestPrerequisiteVersions
(RB 2.0 instead of RB 1.7623):
Package(SmaCC-Development) >> loadWithUntestedLatestPrerequisites
-> loads #(
PackageVersion(SmaCC-Development 1.2)
PackageVersion(SmaCC-Runtime 1.1)
PackageVersion(RB 2.0))
This should store its currently loaded versions somewhere, if you have
tested it
enough you just commit it and a new PackageVersion(SmaCC-Development
1.3)
is automatically created and send to SM.
A PackageVersion can include code but does not have to do so,
as its prerequisiteVersions can.
Have I overlooked much? Is this far away from Gorans ideas?
I just saw that he also wrote a mail right now, also using some
illustrative examples... :-) Have to read this now...
Regards,
Markus
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