Gentoo Archives: gentoo-dev

From: Chris Gianelloni <wolf31o2@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Dirt: To shove under the rug or not shove under the rug? (aka another round of USE_EXPAND)
Date: Tue, 27 Sep 2005 12:41:59
In Reply to: [gentoo-dev] Dirt: To shove under the rug or not shove under the rug? (aka another round of USE_EXPAND) by Jason Stubbs
1 On Tue, 2005-09-27 at 18:23 +0900, Jason Stubbs wrote:
2 > 1) What to do if nothing is set?
4 Install everything. If everything cannot be installed, due to
5 incompatibilities, then die.
7 > 2) What to do if an invalid value is set?
8 >
9 > a) install everything
11 Install everything. If everything cannot be installed, due to
12 incompatibilities, then die.
14 > 3) How to ebuild behave regarding a USE_EXPAND variable?
15 >
16 > a) install everything chosen that is valid
18 Yes.
20 > b) install only the first that is chosen that is valid
21 >
22 > Of these, 1) and 2) absolutely must be whittled down to one standard.
23 > Preferably, 3) should follow one standard as well. Not following one standard
24 > will simply lead to users thinking, "but that's not what I wanted..!" It will
25 > also lead portage to do needless recompiles due to the information available
26 > being limited.
27 >
28 > Next, storing the information of what choices are valid. If it can be
29 > guaranteed that all packages supporting a variable (LINGUAS for example) have
30 > exactly the same list of choices in all cases, storing the choice list in a
31 > global file is acceptable. If not, each package absolutely must list what
32 > choices are available for it. Not doing so means the flow may head into 2) in
33 > the above list even when the user has set a valid choice for a different
34 > package. Again, it's against the user's expectations.
36 Let's take an example of this... Neverwinter Nights. Currently, it
37 installs the language packs via LINGUAS. If nothing is selected via
38 LINGUAS, then it installs English, which is considered the default.
39 Unfortunately, even trying to add -linguas_fr to package.use, still
40 results in the French language pack being installed over the English. I
41 honestly do not know how to correct this. I see a couple things that
42 would be needed. For one, things in USE_EXPAND would need to be
43 negate-able in package.use. The problem with NWN is that only one
44 language pack may be installed at any given time due to them providing
45 the same files.
47 You can see where I've been working with this on bug #106789.
49 > Anybody not caring enough to fix this, please don't respond with "wah! work!?"
50 > You've dug your own hole...
52 I would love to see this fixed. I'm guessing that this would mean
53 defining all of the USE_EXPAND capabilities in IUSE, correct?
55 --
56 Chris Gianelloni
57 Release Engineering - Strategic Lead
58 Games - Developer
59 Gentoo Linux


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