[Nix-dev] Need a better error report on the location of undefined variables.

[Nicolas Pierron]

On Tue, May 26, 2009 at 13:50, Eelco Dolstra <e.dolstra at tudelft.nl> wrote:
> Hi,
>
> Nicolas Pierron wrote:
>
>> Currently, when you add a with statement at the top of your nix
>> expression, this means that you will spend much more time at finding
>> misspelled variables.
>
> Hm yes, the error message is not very good.  So maybe we should add position
> information to variables.  The only downside is that it reduces maximal sharing
> / normal form caching in the evaluator.

Or at least show the location of the attribute which contains the
undefined variable.  This will preserve the maximal sharing as it is
today.

-- 
Nicolas Pierron
http://www.linkedin.com/in/nicolasbpierron
- If you are doing something twice then you should try to do it once.