nix/os/devices: refactor expressions

nix/os/devices/default.nix

@@ -0,0 +1,30 @@
+{ pkgs ? import <nixpkgs> {}
+, ownLib ? import ../lib/default.nix { }
+, dir
+, rebuildarg
+, moreargs ? ""
+, diskId ? (import ((builtins.getEnv "PWD")+"/${dir}/hw.nix") {}).hardware.encryptedDisk.diskId
+, gitRoot ? "$(git rev-parse --show-toplevel)"
+}:
+
+let 
+  rebuild = pkgs.writeScript "script" ''
+    #!/usr/bin/env bash
+    set -xe
+
+    pushd ${gitRoot}/${dir}
+    export NIXOS_CONFIG="$PWD"/configuration.nix
+
+    [[ -e "''${NIXOS_CONFIG}" ]]
+
+    nixos-rebuild -I nixos-config=''${NIXOS_CONFIG} ${rebuildarg} ${moreargs}
+    if test -L result; then
+      rm result
+    fi
+  '';
+
+in {
+  recipes = {
+    inherit rebuild;
+  } // (import ./disk.nix { inherit pkgs ownLib dir rebuildarg moreargs diskId gitRoot; });
+}