1 files changed, 65 insertions, 0 deletions
diff --git a/nixpkgs/nixos/default.nix b/nixpkgs/nixos/default.nix
new file mode 100644
index 000000000..6c5adf365
--- /dev/null
+++ b/nixpkgs/nixos/default.nix
@@ -0,0 +1,65 @@
+{ configuration ? import <upstream-nixpkgs/nixos/lib/from-env.nix> "NIXOS_CONFIG" <nixos-config>
+, system ? builtins.currentSystem
+}:
+
+let
+  eval-config = modules: import <upstream-nixpkgs/nixos/lib/eval-config.nix> {
+    inherit system;
+    modules = modules ++ [({ config, lib, ... }: with lib; {
+      imports = filter dir.has-default-nix (concatLists [
+        (map (p: p + "/2configs") [ <stockholm-private> ])
+        (map (p: p + "/3modules") [ <stockholm-krebs> <stockholm-private> ])
+      ]);
+
+      krebs.current = {
+        enable = true;
+        host = config.krebs.hosts.${readFile /proc/sys/kernel/hostname};
+        user = config.krebs.users.${getEnv "LOGNAME"};
+      };
+
+      nixpkgs.config.packageOverrides = pkgs: let
+        kpkgs = import <stockholm-krebs/5pkgs> { inherit lib pkgs; };
+        upkgs = import <stockholm-private/5pkgs> { inherit lib; pkgs = pkgs // kpkgs; };
+      in kpkgs // upkgs;
+    })];
+    specialArgs = {
+      lib = let
+        nlib = import <upstream-nixpkgs/lib> // builtins;
+        klib = nlib // import <stockholm-krebs/4lib> { lib = nlib; };
+        ulib = klib // (with klib; let p = <stockholm-private> + "/4lib"; in
+          optionalAttrs (dir.has-default-nix p)
+                        (import p { lib = klib; }));
+      in ulib;
+    };
+  };
+
+  eval = eval-config [
+    configuration
+  ];
+
+  # This is for `nixos-rebuild build-vm'.
+  vm = eval-config [
+    configuration
+    <upstream-nixpkgs/nixos/modules/virtualisation/qemu-vm.nix>
+  ];
+
+  # This is for `nixos-rebuild build-vm-with-bootloader'.
+  vm-with-bootloader = eval-config [
+    configuration
+    <upstream-nixpkgs/nixos/modules/virtualisation/qemu-vm.nix>
+    { virtualisation.useBootLoader = true; }
+  ];
+in
+
+{
+  inherit (eval) config options;
+
+  system = eval.config.system.build.toplevel;
+
+  vm = vm.config.system.build.vm;
+
+  vmWithBootLoader = vm-with-bootloader.config.system.build.vm;
+
+  # The following are used by nixos-rebuild.
+  nixFallback = eval.pkgs.nixUnstable;
+}