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nixpkgs/pkgs/build-support/coq/extra-lib.nix
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59 lines
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Nix

{ lib }:
lib.recursiveUpdate lib (
import ../rocq/extra-lib-common.nix { inherit lib; }
// {
/*
Override arguments to mkCoqDerivation for a Coq library.
This function allows you to easily override arguments to mkCoqDerivation,
even when they are not exposed by the Coq library directly.
Type: overrideCoqDerivation :: AttrSet -> CoqLibraryDerivation -> CoqLibraryDerivation
Example:
```nix
coqPackages.lib.overrideCoqDerivation
{
defaultVersion = "9999";
release."9999".hash = "sha256-fDoP11rtrIM7+OLdMisv2EF7n/IbGuwFxHiPtg3qCNM=";
}
coqPackages.QuickChick;
```
This example overrides the `defaultVersion` and `release` arguments that
are passed to `mkCoqDerivation` in the QuickChick derivation.
Note that there is a difference between using `.override` on a Coq
library vs this `overrideCoqDerivation` function. `.override` allows you
to modify arguments to the derivation itself, for instance by passing
different versions of dependencies:
```nix
coqPackages.QuickChick.override { ssreflect = my-cool-ssreflect; }
```
whereas `overrideCoqDerivation` allows you to override arguments to the
call to `mkCoqDerivation` in the Coq library.
Note that all Coq libraries in Nixpkgs have a `version` argument for
easily using a different version. So if all you want to do is use a
different version, and the derivation for the Coq library already has
support for the version you want, you likely only need to update the
`version` argument on the library derivation. This is done with
`.override`:
```nix
coqPackages.QuickChick.override { version = "1.4.0"; }
```
*/
overrideCoqDerivation =
f: drv:
(drv.override (args: {
mkCoqDerivation = drv_: (args.mkCoqDerivation drv_).override f;
}));
}
)