[Nix-dev] Overriding by removing a derivation attribute

[Daniel Bergey]

I think I recall using this combination:

          revision = null;
          editedCabalFile = null;

bergey

On 2016-03-01 at 16:54, Kosyrev Serge <_deepfire at feelingofgreen.ru> wrote:
> I want to override a Haskell derivation, but in the particular case
> it is not enough to change the 'src' attribute -- I also need to stop the
> derivation supplying an alternate .cabal file:
>
>       aeson = haskell.lib.overrideCabal old.aeson (oldAttrs: {
>         editedCabalFile = null; # <----
>         src = pkgs.fetchgit {
>                 url    = https://github.com/bos/aeson;
>                 rev    = "d9f1ad357e5dc28c381099814e7cce0e68cf2b6a";
>                 sha256 = "0nzajw4ia2s7kjjygw9xddrfa1aq2kq960bm9wgj8b34manmyh0f";
>         };
>       });
>
> Naturally, this doesn't work as desired (the file still gets supplied),
> and so the question is -- how is one supposed to achieve that?
>
> -- 
> с уважениeм / respectfully,
> Косырев Сергей
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