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Eelco Dolstra wrote:
>> --- nixpkgs/trunk/pkgs/development/libraries/avahi/default.nix
>> 2009-10-05 23:47:50 UTC (rev 17660)
>> +++ nixpkgs/trunk/pkgs/development/libraries/avahi/default.nix
>> 2009-10-06 05:43:51 UTC (rev 17661)
>> @@ -1,6 +1,6 @@
>> { fetchurl, stdenv, pkgconfig, libdaemon, dbus, perl, perlXMLParser
>> , expat, gettext, intltool, glib, gtk, qt4 ? null, lib
>> -, qt4Support ? false }:
>> +, qt4Support ? false, ...}:
>
> Why these "..."? (I guess it has something to do with the failure above and I
> should add "..." to libxslt's arguments...)
Exactly. I thought about how much easier it will be when we are able to
query argument list of a function. deepOverride "ideal semantics" is to
force all transitive dependencies to use some version of the package if
they need it at all. Unfortunately, the last part can only be
implemented with the latest stable Nix as "..." in argument list.
> As far as I'm concerned "..." in package function argument lists was a failed
> experiment in reducing typing overhead and is deprecated (just like "with
> args").
I grep for the word "deprecated" in Nix/NixPkgs doc.. OK, whether "..."
is deprecated is quite hard to know. Also, we need transitive overrides
to actually use one of the selling points (all our "many versions of a
library simultaneously" ideas are worthless if we cannot easily create
package set "slices" with given library versions - like I did for
WebKit). It is the only way to implement it, and not an unmaintainable one.
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