Commit 51452954 authored by DavHau's avatar DavHau
Browse files

tests.top-level: add test for appendOverlays preserving splicing 

Ensures that appendOverlays with an empty list returns spliced
packages, so that cross-compilation in NixOS modules works correctly.
parent 99ab2550

pkgs/test/top-level/default.nix

+18 −0
Original line number Diff line number Diff line
@@ -64,4 +64,22 @@ lib.recurseIntoAttrs { 
    assert lib.all (p: p.stdenv.buildPlatform == p.stdenv.hostPlatform) pkgsLocal;

    assert lib.all (p: p.stdenv.buildPlatform != p.stdenv.hostPlatform) pkgsCross;

    pkgs.emptyFile;



  # appendOverlays must preserve splicing so that cross-compilation

  # works in NixOS modules (which go through appendOverlays via nixpkgs.nix).

  appendOverlaysPreservesSplicing =

    let

      cross = nixpkgsFun {

        localSystem = {

          system = "x86_64-linux";

        };

        crossSystem = {

          system = "aarch64-linux";

        };

      };

      appended = cross.appendOverlays [ ];

    in

    assert cross.makeWrapper ? __spliced;

    assert appended.makeWrapper ? __spliced;

    pkgs.emptyFile;

}