Use latest nix

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1642653493,
-        "narHash": "sha256-22mGPjiHUo2Jmze4IjXCJLjeK2mbvvCztHmUyUMr4yw=",
+        "lastModified": 1643933536,
+        "narHash": "sha256-yRmsWAG4DnLxLIUtlaZsl0kH7rN5xSoyNRlf0YZrcH4=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "28b9ae40c45c5e7711c353fee1b7af734e293979",
+        "rev": "2860d7e3bb350f18f7477858f3513f9798896831",
         "type": "github"
       },
       "original": {
@@ -23,11 +23,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1643503720,
-        "narHash": "sha256-tJic20ufuRnG8V+fTCd3YU6xl1ImxNspoEkXHct0AG4=",
+        "lastModified": 1644193793,
+        "narHash": "sha256-ggCI5LCXwkUJQwjpkr9qDFbQMiK3JvAfeNR4Uy0ny5Q=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "0f316e4d72daed659233817ffe52bf08e081b5de",
+        "rev": "521e4d7d13b09bc0a21976b9d19abd197d4e3b1e",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1643587774,
-        "narHash": "sha256-PWSPlEvw183+elqoCFbWTxdrHUrZgtkzzw1NuCLQhRc=",
+        "lastModified": 1644225686,
+        "narHash": "sha256-XDslFfn44H93WjGytIhrPSduGIug1p4cPN/cEuHdIBI=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "0ab30f0ddc23436e4cd204255f66fcb929734217",
+        "rev": "64cb9c78e14d0ffc9ee627772a972aa4b59bbfd8",
         "type": "github"
       },
       "original": {

sets/base.nix

@@ -1,9 +1,9 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, pkgs-unstable, lib, ... }:
 
 {
   nix = {
     autoOptimiseStore = true;
-    package = pkgs.nixFlakes;
+    package = pkgs-unstable.nix;
     extraOptions = ''
       experimental-features = nix-command flakes
     '';