Re: binary pkg "variants" ? [was: Re: Package split or package options?]

[Thomas Klausner <wiz%netbsd.org@localhost>]

On Sat, Jan 18, 2014 at 03:28:52PM +0100, Anthony Mallet wrote:
> Here are the 3 patches for pkgtools/pkg_install implementing the 
> aforementioned
> naming scheme in robotpkg. As such, the patches are supposed to be harmless,
> i.e. pkgsrc/pkg_install will work exactly as before (but of course implement
> the necessary bits for the new naming scheme, mostly affecting pkg_admin 
> pmatch).
> 
> Patches 1 & 2 are just code refactoring, patch 3 implements the real stuff.
> There is my git commit message in the patch, hopefully explaining what is
> implemented.
> 
> http://www.netbsd.org/~tho/0001-pkgtools-pkg_install-Factorize-code-adding-a-version.patch

Ok, commit this after the branch.

> http://www.netbsd.org/~tho/0002-pkgtools-pkg_install-Do-not-reinvent-pkg_match-for-m.patch

Good too.

> http://www.netbsd.org/~tho/0003-pkgtools-pkg_install-Introduce-the-tags-package-suff.patch

From the patch age I assume you've been running this for years, so commit this 
too please.

> Examples:
> pkg_admin pmatch 'x>=1.0~a' x-1.0 ->false
> pkg_admin pmatch 'x>=1.0~a' x-1.0~a ->true
> pkg_admin pmatch 'x>=1.0~a' x-0.0~a ->false
> 
> pkg_admin pmatch 'x~!a' x-1.0~a ->false
> pkg_admin pmatch 'x~!a' x-1.0 ->true
> 
> pkg_admin pmatch 'x~a+b' x-1.0 ->false
> pkg_admin pmatch 'x~a+b' x-1.0~a ->false
> 
> pkg_admin pmatch 'x~*' x-1.0 ->true
> pkg_admin pmatch 'x~*' x-1.0~a ->true
> 
> pkg_admin pmatch 'x~!*' x-1.0 ->true
> pkg_admin pmatch 'x~!*' x-1.0~a ->false
> 
> etc.
> 
> Some remarks:
> - The matching algorithm with patterns on boolean variables is in general a
>   complex problem (known as SAT, I think), and the one implemented tries to
>   keep things simple and intuitve. But it's not been formalized, so there must
>   be some caveats ...
> 
> - As wiz@ already noted, the use of the not operator `!' might be replaced by 
> a
>   `^' to avoid quoting issues, and instead of using pkgname-version~options,
>   one could also use pkgname~options-version¹.

I'd like some feedback from others here too what they prefer.
Has anyone looked what Debian or OpenBSD use here?

Cheers,
 Thomas