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mkDerivation: add overrideAttrs function

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This is similar to `overrideDerivation`, but overrides the arguments to
`mkDerivation` instead of the underlying `derivation` call.

Also update `makeOverridable` so that uses of `overrideAttrs` can be
followed by `override` and `overrideDerivation`, i.e. they can be
mix-and-matched.
This commit is contained in:
Aneesh Agrawal
2016-08-19 22:21:32 -04:00
parent fbcb93852c
commit 39b64b52ed
3 changed files with 74 additions and 10 deletions
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22
lib/customisation.nix
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@@ -56,16 +56,18 @@ rec {
ff = f origArgs;
overrideWith = newArgs: origArgs // (if builtins.isFunction newArgs then newArgs origArgs else newArgs);
in
if builtins.isAttrs ff then (ff //
{ override = newArgs: makeOverridable f (overrideWith newArgs);
overrideDerivation = fdrv:
makeOverridable (args: overrideDerivation (f args) fdrv) origArgs;
})
else if builtins.isFunction ff then
{ override = newArgs: makeOverridable f (overrideWith newArgs);
__functor = self: ff;
overrideDerivation = throw "overrideDerivation not yet supported for functors";
}
if builtins.isAttrs ff then (ff // {
override = newArgs: makeOverridable f (overrideWith newArgs);
overrideDerivation = fdrv:
makeOverridable (args: overrideDerivation (f args) fdrv) origArgs;
${if ff ? overrideAttrs then "overrideAttrs" else null} = fdrv:
makeOverridable (args: (f args).overrideAttrs fdrv) origArgs;
})
else if builtins.isFunction ff then {
override = newArgs: makeOverridable f (overrideWith newArgs);
__functor = self: ff;
overrideDerivation = throw "overrideDerivation not yet supported for functors";
}
else ff;