Make it possible to get installed on Darwin

flake.nix

@@ -56,6 +56,11 @@
           _module.args.pkgs = import inputs.nixpkgs {
             inherit system;
             config.allowUnfree = true;
+            overlays = [
+              (_f: p: {
+                OVMF = p.OVMF.overrideAttrs { meta.broken = false; };
+              })
+            ];
           };
 
           devShells.default = pkgs.mkShell {
@@ -63,10 +68,13 @@
             shellHook = self'.checks.pre-commit.shellHook;
 
             packages =
-              (with pkgs; [
-                packer
-                vagrant
-              ])
+              (
+                with pkgs;
+                [
+                  packer
+                ]
+                ++ lib.optional (!pkgs.stdenv.isDarwin) vagrant
+              )
               ++ (with self'.packages; [
                 cache
                 generate
@@ -77,7 +85,7 @@
             # These commands will be shown in the motd that users read
             # upon entering the shell
             env = {
-              EFI_DIR = "${pkgs.OVMF.fd}/FV/";
+              EFI_DIR = if pkgs.stdenv.isDarwin then "" else "${pkgs.OVMF.fd}/FV/";
               PACKER_CONFIG_DIR = "./packer_config";
               STORAGE_URL = "s3.thehellings.lan:9000";
             };
@@ -90,14 +98,16 @@
                 prefix: d: args:
                 pkgs.writeShellApplication {
                   name = "${prefix}${name d}";
-                  runtimeInputs = with pkgs; [
-                    cdrtools
-                    findutils
-                    packer
-                    qemu_full
-                    vagrant
-                    xorriso
-                  ];
+                  runtimeInputs =
+                    with pkgs;
+                    [
+                      cdrtools
+                      findutils
+                      packer
+                      qemu_full
+                      xorriso
+                    ]
+                    ++ lib.optional (!pkgs.stdenv.isDarwin) vagrant;
                   text = ''
                     # This is a workaround for a goofy behavior in CI
                     if [ -e "''${PACKER_CONFIG_DIR}" ]; then