3 files changed, 16 insertions, 7 deletions
diff --git a/nixos/modules/installer/tools/nix-fallback-paths.nix b/nixos/modules/installer/tools/nix-fallback-paths.nix
new file mode 100644
index 000000000000..67a34d8a8ddf
--- /dev/null
+++ b/nixos/modules/installer/tools/nix-fallback-paths.nix
@@ -0,0 +1,5 @@
+{
+  x86_64-linux = "/nix/store/xryr9g56h8yjddp89d6dw12anyb4ch7c-nix-1.10";
+  i686-linux = "/nix/store/2w92k5wlpspf0q2k9mnf2z42prx3bwmv-nix-1.10";
+}
+
diff --git a/nixos/modules/installer/tools/nixos-rebuild.sh b/nixos/modules/installer/tools/nixos-rebuild.sh
index 803989789838..36700d2bf566 100644
--- a/nixos/modules/installer/tools/nixos-rebuild.sh
+++ b/nixos/modules/installer/tools/nixos-rebuild.sh
@@ -261,9 +261,9 @@ fi
 prebuiltNix() {
     machine="$1"
     if [ "$machine" = x86_64 ]; then
-        echo /nix/store/xryr9g56h8yjddp89d6dw12anyb4ch7c-nix-1.10
+        echo @nix_x86_64_linux@
     elif [[ "$machine" =~ i.86 ]]; then
-        echo /nix/store/2w92k5wlpspf0q2k9mnf2z42prx3bwmv-nix-1.10
+        echo @nix_i686_linux@
     else
         echo "$0: unsupported platform"
         exit 1
diff --git a/nixos/modules/installer/tools/tools.nix b/nixos/modules/installer/tools/tools.nix
index fc39a653abdc..a35f6ad8ae54 100644
--- a/nixos/modules/installer/tools/tools.nix
+++ b/nixos/modules/installer/tools/tools.nix
@@ -32,11 +32,15 @@ let
       "cp refs $out";
   };
 
-  nixos-rebuild = makeProg {
-    name = "nixos-rebuild";
-    src = ./nixos-rebuild.sh;
-    nix = config.nix.package.out;
-  };
+  nixos-rebuild =
+    let fallback = import ./nix-fallback-paths.nix; in
+    makeProg {
+      name = "nixos-rebuild";
+      src = ./nixos-rebuild.sh;
+      nix = config.nix.package.out;
+      nix_x86_64_linux = fallback.x86_64-linux;
+      nix_i686_linux = fallback.i686-linux;
+    };
 
   nixos-generate-config = makeProg {
     name = "nixos-generate-config";