Merge pull request #122987 from alyssais/nixos-rebuild-aarch64

nixos-rebuild: support prebuilt Nix on aarch64

pkgs/os-specific/linux/nixos-rebuild/default.nix

@@ -18,5 +18,6 @@ substituteAll {
   inherit runtimeShell nix;
   nix_x86_64_linux = fallback.x86_64-linux;
   nix_i686_linux = fallback.i686-linux;
+  nix_aarch64_linux = fallback.aarch64-linux;
   path = lib.makeBinPath [ coreutils jq gnused gnugrep ];
 }

pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh

@@ -386,6 +386,8 @@ prebuiltNix() {
         echo @nix_x86_64_linux@
     elif [[ "$machine" =~ i.86 ]]; then
         echo @nix_i686_linux@
+    elif [[ "$machine" = aarch64 ]]; then
+        echo @nix_aarch64_linux@
     else
         echo "$0: unsupported platform"
         exit 1