rework lib and some general changes

flake.lock

@@ -2,7 +2,9 @@
   "nodes": {
     "home-manager": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1705535278,
@@ -19,22 +21,6 @@
       }
     },
     "nixpkgs": {
-      "locked": {
-        "lastModified": 1705316053,
-        "narHash": "sha256-J2Ey5mPFT8gdfL2XC0JTZvKaBw/b2pnyudEXFvl+dQM=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "c3e128f3c0ecc1fb04aef9f72b3dcc2f6cecf370",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
       "locked": {
         "lastModified": 1705496572,
         "narHash": "sha256-rPIe9G5EBLXdBdn9ilGc0nq082lzQd0xGGe092R/5QE=",
@@ -53,7 +39,7 @@
     "root": {
       "inputs": {
         "home-manager": "home-manager",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs"
       }
     }
   },