[Nix-dev] Re: [Nix-commits] SVN commit: nix - 12894 - ludo - nixpkgs/trunk/pkgs/applications/editors/emacs-unicode

[Eelco Dolstra]

Ludovic Courts wrote:

> Modified:
>    nixpkgs/trunk/pkgs/applications/editors/emacs-unicode/default.nix
> 
> Log:
> Change `name' attribute of Emacs 23 to `emacs-snapshot-23-xxx'.
> 
> This is so that "nix-env -u emacs" doesn't switch from, say, Emacs 22
> to Emacs 23.

A maybe better solution is to change the priority on Emacs 23 so that it doesn't
get picked by default.  The lowPrio function in Nixpkgs does that, just say

  emacsUnicode = lowPrio (import ... { ... });

This is also used on GCC 4.3 and a bunch of other packages.

-- 
Eelco Dolstra | http://www.st.ewi.tudelft.nl/~dolstra/