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mahdi1234
Guru
Joined: 19 Feb 2005
Posts: 471
Location: far from new world orderia
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 Posted: Sun Apr 17, 2011 2:01 pm Post subject: Recently many new virtual packages |
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I've noticed in the last couple of weeks there's been introduced many new virtual packages to the stable, from those I'm pretty sure
| Code: | | e.g virtual/ssh-0 virtual/os-headers-0 virtual/man-0 virtual/dev-manager-0 or virtual/ffmpeg |
- is there some of the devs who could answer whether this is gonna be the way for the future? Is there gonna be for each of those eselect option as well? Isn't this going to add up too many packages? The thing is, I don't understand much the need to introduce such things as headers or man now, what is need/benefit for this when it worked for ages without it?
thanks & cheers ... |
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dol-sen
Developer
Joined: 30 Jun 2002
Posts: 2383
Location: Richmond, BC, Canada
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| Posted: Sun Apr 17, 2011 2:25 pm Post subject: |
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virtuals are mainly for handling multiple package choices that are able to supply a program or lib.
take virtual/man-0. It's dependencies are: | Quote: | any of:
sys-apps/man,
sys-apps/man-db, a man replacement that utilizes berkdb instead of flat files
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and for virtual/os-headers-0 | Quote: | any of:
sys-kernel/linux-headers:0
sys-freebsd/freebsd-lib |
In this case it so that gentoo can handle being installed on a freebsd system.
...
Gentoo offers the most choices for most things available in the linux world. Virtuals are a way to make those choices easier to keep track of in the dependencies for the pkg ebuilds you are installing. It is far easier to change 1 virtual, than it is to change 2000+ ebuilds that depend on sys-apps/man or equivalent if a third option was to become available.
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Porthole, the Portage GUI frontend irc@freenode: #gentoo-guis, #porthole, Blog
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djdunn
l33t
Joined: 26 Dec 2004
Posts: 619
Location: Under the moon and all the stars in the sky.
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| Posted: Sun Apr 17, 2011 11:10 pm Post subject: |
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Brilliant isn't it? 
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ulm
Developer
Joined: 04 Oct 2004
Posts: 63
Location: Mainz, Germany
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| Posted: Mon Apr 18, 2011 7:27 am Post subject: |
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These virtuals that have appeared in your list of packages are not really new, but have been migrated from "old style" to "new style". An explanation of both concepts can be found in the devmanual: http://devmanual.gentoo.org/general-concepts/virtuals/
Old-style virtuals were deprecated long time ago with GLEP 37. As of today, there are 4 old-style virtuals left (cron, libc, linux-sources, modutils) and I hope that they can be migrated to new-style within the next month. So there won't be many more additional packages showing up.
Some statistics (see bug 350792 for details):
- 48 old-style virtuals in January 2011
- 26 have been removed entirely
- 18 have been migrated to new-style
- 4 left
Last edited by ulm on Mon Apr 18, 2011 7:20 pm; edited 1 time in total |
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mahdi1234
Guru
Joined: 19 Feb 2005
Posts: 471
Location: far from new world orderia
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| Posted: Mon Apr 18, 2011 1:04 pm Post subject: |
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| ok, thanks for all the info |
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rh1
Guru
Joined: 10 Apr 2010
Posts: 495
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| Posted: Mon Apr 18, 2011 4:45 pm Post subject: |
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| New style virtuals are nice. Some are even versioned so they can depend of different versions of packages. Makes it nice and flexible. Definately an improvement |
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wswartzendruber
Veteran
Joined: 23 Mar 2004
Posts: 1205
Location: Jefferson, USA
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| Posted: Wed Apr 27, 2011 3:06 am Post subject: |
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| FFMPEG |
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yoshi314
l33t
Joined: 30 Dec 2004
Posts: 799
Location: PL
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| Posted: Thu May 05, 2011 10:29 am Post subject: |
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too bad that virtual/linux-sources (or was it kernel-sources ? ) it not widely respected yet.
it really sucked that many packages would insist on gentoo-sources.
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Etal
Veteran
Joined: 15 Jul 2005
Posts: 1634
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| Posted: Sat May 07, 2011 5:51 pm Post subject: |
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I've been using vanilla-sources for years without problem... 
| Code: | $ equery d --all-packages gentoo-sources
* These packages depend on gentoo-sources:
virtual/linux-sources-2.6 (=sys-kernel/gentoo-sources-2.6*) |
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Kollin
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Joined: 25 Feb 2006
Posts: 1035
Location: Sofia/Bulgaria
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| Posted: Sun May 29, 2011 4:48 pm Post subject: |
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And from today:
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