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overrideDerivation: Check whether hostDrv' and buildDrv' are present.

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svn path=/nixpkgs/trunk/; revision=31727
This commit is contained in:
Ludovic Courtès 2012-01-19 22:29:26 +00:00
parent bf71d12fd4
commit 5cd82587aa
1 changed files with 8 additions and 3 deletions
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11
pkgs/lib/customisation.nix
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@ -42,9 +42,14 @@ rec {
in newDrv //
{ meta = if drv ? meta then drv.meta else {};
passthru = if drv ? passthru then drv.passthru else {};
hostDrv = overrideDerivation drv.hostDrv f;
buildDrv = overrideDerivation drv.buildDrv f;
};
}
//
(if (drv ? hostDrv && drv ? buildDrv)
then {
hostDrv = overrideDerivation drv.hostDrv f;
buildDrv = overrideDerivation drv.buildDrv f;
}
else { });
# usage: (you can use override multiple times)