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.

4 files changed, 22 insertions, 16 deletions

diff --git a/tests/github-flakes.nix b/tests/github-flakes.nix
index 2345972ce..7211360cd 100644
--- a/tests/github-flakes.nix
+++ b/tests/github-flakes.nix
@@ -1,6 +1,9 @@
-{ 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 ]; } ];
+};
 
 let
 
@@ -101,7 +104,6 @@ makeTest (
         { config, pkgs, nodes, ... }:
         { virtualisation.writableStore = true;
           virtualisation.pathsInNixDB = [ pkgs.hello pkgs.fuse ];
-          nix.package = nix;
           nix.binaryCaches = [ ];
           environment.systemPackages = [ pkgs.jq ];
           networking.hosts.${(builtins.head nodes.github.config.networking.interfaces.eth1.ipv4.addresses).address} =
@@ -135,11 +137,11 @@ makeTest (
       my $date = $client->succeed("nix flake info nixpkgs --json | jq -M .lastModified");
       strftime("%Y%m%d%H%M%S", gmtime($date)) eq "${nixpkgs.lastModified}" or die "time mismatch";
 
-      $client->succeed("nix build nixpkgs:hello");
+      $client->succeed("nix build nixpkgs#hello");
 
       # The build shouldn't fail even with --tarball-ttl 0 (the server
       # being down should not be a fatal error).
-      $client->succeed("nix build nixpkgs:fuse --tarball-ttl 0");
+      $client->succeed("nix build nixpkgs#fuse --tarball-ttl 0");
     '';
 
 })
diff --git a/tests/nix-copy-closure.nix b/tests/nix-copy-closure.nix
index 0dc147fb3..7c4bdaded 100644
--- a/tests/nix-copy-closure.nix
+++ b/tests/nix-copy-closure.nix
@@ -1,8 +1,11 @@
 # Test ‘nix-copy-closure’.
 
-{ 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 (let pkgA = pkgs.cowsay; pkgB = pkgs.wget; pkgC = pkgs.hello; in {
 
@@ -11,7 +14,6 @@ makeTest (let pkgA = pkgs.cowsay; pkgB = pkgs.wget; pkgC = pkgs.hello; in {
         { config, pkgs, ... }:
         { virtualisation.writableStore = true;
           virtualisation.pathsInNixDB = [ pkgA ];
-          nix.package = nix;
           nix.binaryCaches = [ ];
         };
 
@@ -20,7 +22,6 @@ makeTest (let pkgA = pkgs.cowsay; pkgB = pkgs.wget; pkgC = pkgs.hello; in {
         { services.openssh.enable = true;
           virtualisation.writableStore = true;
           virtualisation.pathsInNixDB = [ pkgB pkgC ];
-          nix.package = nix;
         };
     };
 
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";
         };
diff --git a/tests/setuid.nix b/tests/setuid.nix
index 77e83c8d6..d79d071df 100644
--- a/tests/setuid.nix
+++ b/tests/setuid.nix
@@ -1,15 +1,17 @@
 # Verify that Linux builds cannot create setuid or setgid binaries.
 
-{ 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 {
 
   machine =
     { config, lib, pkgs, ... }:
     { virtualisation.writableStore = true;
-      nix.package = nix;
       nix.binaryCaches = [ ];
       nix.nixPath = [ "nixpkgs=${lib.cleanSource pkgs.path}" ];
       virtualisation.pathsInNixDB = [ pkgs.stdenv pkgs.pkgsi686Linux.stdenv ];