chore: flake update

flake.lock

@@ -28,11 +28,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1783479733,
+        "lastModified": 1785496534,
-        "narHash": "sha256-d/JatqgG+Pmo+IuCTZfnrEAPWU3fdha48GQeXuFO+bE=",
+        "narHash": "sha256-EASdusMYLuPhOCrE3LmsAGOvGhX3vnKBLxFvj9lI8tU=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "cee3f0e7fec85d80c149c7afc29926747f7bd3c2",
+        "rev": "e8827fbbb12015a8dd9f66285aec79d655bcb9f6",
         "type": "github"
       },
       "original": {
@@ -43,11 +43,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1783224372,
+        "lastModified": 1785454630,
-        "narHash": "sha256-8i/87eeoqiGE4yOTjwSA3Eh/ziJRQEmd/unYU+K27sk=",
+        "narHash": "sha256-LQy14TZp77TwbQf40gg1V3jo8FwJG0jGDkAH+zRHqg8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "d407951447dcd00442e97087bf374aad70c04cea",
+        "rev": "1559d3daa3ecc813a650b79375ea61b6741b8746",
         "type": "github"
       },
       "original": {
@@ -57,20 +57,34 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1784555310,
+        "narHash": "sha256-/FCliTPgiuV1owejZFNx3Ch9irdvkOfOFl+HHZ+DrtM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "421eebfd0ec7bccd4abe826ce62d7e6e83129493",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixvim": {
       "inputs": {
         "flake-parts": "flake-parts",
-        "nixpkgs": [
+        "nixpkgs": "nixpkgs_2",
-          "nixpkgs"
-        ],
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1783349931,
+        "lastModified": 1785364321,
-        "narHash": "sha256-aYE76ATiGBg7/cQ2dHASRq97WvNum4OOIPgZ8xIK0QI=",
+        "narHash": "sha256-BLuHl+nZKb+FDq3GAM6L+UBEiyVepXANA31fT1F56pw=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "4fd45857deecb90d2732c87e0315daa48505515e",
+        "rev": "acd69cc15d57004e8cb4495034320263a3d362ea",
         "type": "github"
       },
       "original": {