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Hello, |
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--On Sonntag, Juli 04, 2004 20:13:46 +0900 Jason Stubbs |
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<jstubbs@g.o> wrote: |
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> -----BEGIN PGP SIGNED MESSAGE----- |
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> Hash: SHA1 |
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> |
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> On Sunday 04 July 2004 19:59, Ciaran McCreesh wrote: |
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>> On Sun, 04 Jul 2004 12:50:40 +0200 Alexander Holler |
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>> |
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>> <holler@××××××××××.de> wrote: |
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>> | > it's mostly used to force upgrades with related packages but to |
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>> | > avoid circular dependencies (which would happen with RDEPEND) |
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>> | |
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>> | I think you mean DEPEND, not RDEPEND. Circular dependencies using |
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>> | RDEPEND can't occur, because RDEPEND says nothing about the order in |
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>> | which ebuilds must be installed. |
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>> |
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>> No, he means RDEPEND. Currently, portage will always install RDEPEND |
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>> before the package. This is considered by some to be a Bad Thing (TM). |
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I agree. A runtime dependency could be installed at any point during |
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installation process. Otherwise (such as portage now seems to handle this), |
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it is the same as DEPEND. |
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When the actual portage handles RDEPEND like DEPEND, I understand why |
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PDEPEND was included. But I think this doesn't make sense. |
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> |
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> It is usually not necessary to install RDEPENDs prior to a package |
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> itself, but it is unsafe to do it any other way until portage's |
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> dependency resolution advances significantly. Take the following: |
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> |
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> foo:DEPEND="bar" |
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> bar:RDEPEND="baz" |
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> baz:DEPEND="" |
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> |
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> If none of the above packages are installed, the order should be either |
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> baz-bar-foo or bar-baz-foo. The reason being that bar needs to be |
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No. Because baz is a runtime dependency, the order could be bar-foo-baz too. |
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> runnable for foo to be built and running bar requires baz. In the above |
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> example, if foo only had a RDEPEND on bar then the package order would |
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> be unimportant. |
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> Marius also brought up an interesting point when I was discussing this |
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> with him. When a user installs a series of packages (by whatever means), |
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> they tend to expect that a package is executable as soon as it is |
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> installed. |
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That doesn't make sense, otherwise RDEPEND could just included in DEPEND |
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and removed. |
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Regards, |
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Alexander |
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-- |
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