Merge release.nix, shell.nix and release-common.nix into flake.nix

Also provide a Nixpkgs overlay, memoize Nixpkgs evaluation and fit the
githubFlakes test.

1 files changed, 5 insertions, 4 deletions

diff --git a/tests/remote-builds.nix b/tests/remote-builds.nix
index b867f13b4..a53f9bfcd 100644
--- a/tests/remote-builds.nix
+++ b/tests/remote-builds.nix
@@ -1,8 +1,11 @@
 # Test Nix's remote build feature.
 
-{ nixpkgs, system, nix }:
+{ nixpkgs, system, overlay }:
 
-with import (nixpkgs + "/nixos/lib/testing.nix") { inherit system; };
+with import (nixpkgs + "/nixos/lib/testing.nix") {
+  inherit system;
+  extraConfigurations = [ { nixpkgs.overlays = [ overlay ]; } ];
+};
 
 makeTest (
 
@@ -13,7 +16,6 @@ let
     { config, pkgs, ... }:
     { services.openssh.enable = true;
       virtualisation.writableStore = true;
-      nix.package = nix;
       nix.useSandbox = true;
     };
 
@@ -59,7 +61,6 @@ in
             ];
           virtualisation.writableStore = true;
           virtualisation.pathsInNixDB = [ config.system.build.extraUtils ];
-          nix.package = nix;
           nix.binaryCaches = [ ];
           programs.ssh.extraConfig = "ConnectTimeout 30";
         };