update yubikey-installer.nix to 23.05 and nix flake update

flake.lock

@@ -82,11 +82,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689503327,
-        "narHash": "sha256-qVwzYLA8oT2oWNDXO0A3bZHOhoPOihIB9T677+Hor1E=",
+        "lastModified": 1689680872,
+        "narHash": "sha256-brNix2+ihJSzCiKwLafbyejrHJZUP0Fy6z5+xMOC27M=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "f64b9738da8e86195766147e9752c67fccee006c",
+        "rev": "08700de174bc6235043cb4263b643b721d936bdb",
         "type": "github"
       },
       "original": {

yubikey-installer.nix

@@ -60,6 +60,8 @@ let
       nixpkgs.config = {allowBroken = true;};
 
       isoImage.isoBaseName = lib.mkForce "nixos-yubikey";
+      # Uncomment this to disable compression and speed up image creation time
+      isoImage.squashfsCompression = "gzip -Xcompression-level 1";
 
       boot.kernelPackages = config.boot.zfs.package.latestCompatibleLinuxPackages;
       # Always copytoram so that, if the image is booted from, e.g., a
@@ -93,11 +95,12 @@ let
         yubikey-personalization
         yubikey-personalization-gui
         yubico-piv-tool
-        yubioath-desktop
+        yubioath-flutter
 
         # Testing
         ent
-        (haskell.lib.justStaticExecutables haskellPackages.hopenpgp-tools)
+        # does not compile as of 2023-07-20
+        #(haskell.lib.justStaticExecutables haskellPackages.hopenpgp-tools)
 
         # Password generation tools
         diceware