removed deprecated syntax from flake

flake.lock

@@ -19,16 +19,15 @@
     "gourou-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1650729079,
-        "narHash": "sha256-2ZnuO/fIjSzTK0srFzDAhGNh1hA4lZf3lK4VuFxWXmo=",
+        "lastModified": 1654435760,
+        "narHash": "sha256-X94UbSwAp3rtioC8FCgJcOlVNZ5rvaAeIIVlKocFwus=",
         "ref": "master",
-        "rev": "7b6b1471fefb27e79e06e5d686cb8842c539cd0c",
-        "revCount": 79,
+        "rev": "4f288f4e241e3cc711a10fdcf4078fd4ddfab7c2",
+        "revCount": 81,
         "type": "git",
         "url": "git://soutade.fr/libgourou.git"
       },
       "original": {
-        "ref": "master",
         "type": "git",
         "url": "git://soutade.fr/libgourou.git"
       }
@@ -87,7 +86,6 @@
         "url": "git://soutade.fr/updfparser.git"
       },
       "original": {
-        "ref": "master",
         "type": "git",
         "url": "git://soutade.fr/updfparser.git"
       }

flake.nix

@@ -3,14 +3,10 @@
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     gourou-src = {
       url = "git://soutade.fr/libgourou.git";
-      type  = "git";
-      ref   = "master";
       flake = false;
     };
     updfparser-src = {
       url = "git://soutade.fr/updfparser.git";
-      type  = "git";
-      ref   = "master";
       flake = false;
     };
     base64-src = {
@@ -148,7 +144,7 @@
           -I ${self.libzip-static}/include
       '' ];
     };
-    defaultPackage.x86_64-linux = self.knock;
+    packages.x86_64-linux.default = self.knock;
     packages.x86_64-linux.tests = nixpkgs-dyn.stdenv.mkDerivation {
       name = "tests";
       src = ./tests;