[gentoo-dev] Ebuild new install versus reinstall - how to tell?

[gentoo-dev] Ebuild new install versus reinstall - how to tell?

[Loyd Goodbar]

I'm writing an ebuild, and would like to know whether this is the first time
the ebuild installs on the system, or whether it is being rebuilt.

This is for IBM iSeries Access for Linux that does some one-time ODBC driver
registration on the first install. Converting from the RPM file, RPM appears
to know whether it's a first time install. Emerge shows on the screen (N or
R).

I've looked through the ebuild and emerge man pages, they don't appear to
cover this. 

Thanks,
Loyd
--  
Mediocrity: It takes a lot less time and most people won't notice
the difference until it's too late. <http://www.despair.com/>
loyd@blackrobes.net  ICQ#504581  http://www.blackrobes.net/


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Re: [gentoo-dev] Ebuild new install versus reinstall - how to tell?

[Jeremy Maitin-Shepard]

Loyd Goodbar <loyd@blackrobes.net> writes:

> I'm writing an ebuild, and would like to know whether this is the first time
> the ebuild installs on the system, or whether it is being rebuilt.

Use `has_version'.  See ebuild(5).

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Jeremy Maitin-Shepard

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Re: [gentoo-dev] Ebuild new install versus reinstall - how to tell?

[Daniel]

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On Tue, 6 Jan 2004 08:20 am, Loyd Goodbar wrote:
> I'm writing an ebuild, and would like to know whether this is the first
> time the ebuild installs on the system, or whether it is being rebuilt.
>

Function has_version

usr/portage/app-sci/foldingathome/foldingathome-3.24.ebuild:   if has_version 
\>=glibc-2.3.0; then

You should be able to reference your own package.

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Daniel Black
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Re: [gentoo-dev] Ebuild new install versus reinstall - how to tell?

[Paul de Vrieze]

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On Monday 05 January 2004 23:58, Jeremy Maitin-Shepard wrote:
> Loyd Goodbar <loyd@blackrobes.net> writes:
> > I'm writing an ebuild, and would like to know whether this is the
> > first time the ebuild installs on the system, or whether it is being
> > rebuilt.
>
> Use `has_version'.  See ebuild(5).

This function works. However to make things fool-proof it is normally 
better to have a check on whether the package is actually registered 
with odbc instead of using the previous install status. a has_version 
check has many possibilities for errors when a state is inconsistent.

Paul

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Paul de Vrieze
Gentoo Developer
Mail: pauldv@gentoo.org
Homepage: http://www.devrieze.net
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