zenix: use nheko, move cosmic stuff

flake.lock

@@ -228,11 +228,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1720402578,
-        "narHash": "sha256-Zw+4iAKfIaSu0x8HZeQzC8r8Gktz8+HdZSdVdZ8buqs=",
+        "lastModified": 1720834574,
+        "narHash": "sha256-VBJLs1yX4CsG3mr5nPjm6Z7NBStyJlGRNdmr2IoWU70=",
         "owner": "lilyinstarlight",
         "repo": "nixos-cosmic",
-        "rev": "bbd44e1198e9a998af04b6973d3f3a2c9950ae46",
+        "rev": "733919b05babc978b0c015987a6c4de499ff27cc",
         "type": "github"
       },
       "original": {
@@ -243,11 +243,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1720031269,
-        "narHash": "sha256-rwz8NJZV+387rnWpTYcXaRNvzUSnnF9aHONoJIYmiUQ=",
+        "lastModified": 1720542800,
+        "narHash": "sha256-ZgnNHuKV6h2+fQ5LuqnUaqZey1Lqqt5dTUAiAnqH0QQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9f4128e00b0ae8ec65918efeba59db998750ead6",
+        "rev": "feb2849fdeb70028c70d73b848214b00d324a497",
         "type": "github"
       },
       "original": {
@@ -259,11 +259,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1720244366,
-        "narHash": "sha256-WrDV0FPMVd2Sq9hkR5LNHudS3OSMmUrs90JUTN+MXpA=",
+        "lastModified": 1720691131,
+        "narHash": "sha256-CWT+KN8aTPyMIx8P303gsVxUnkinIz0a/Cmasz1jyIM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "49ee0e94463abada1de470c9c07bfc12b36dcf40",
+        "rev": "a046c1202e11b62cbede5385ba64908feb7bfac4",
         "type": "github"
       },
       "original": {
@@ -342,7 +342,6 @@
         "nixos-cosmic": "nixos-cosmic",
         "nixpkgs": "nixpkgs_2",
         "sops-nix": "sops-nix",
-        "stable-nixpkgs": "stable-nixpkgs",
         "stylix": "stylix"
       }
     },
@@ -365,21 +364,6 @@
         "type": "github"
       }
     },
-    "stable-nixpkgs": {
-      "locked": {
-        "lastModified": 1719957072,
-        "narHash": "sha256-gvFhEf5nszouwLAkT9nWsDzocUTqLWHuL++dvNjMp9I=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "7144d6241f02d171d25fba3edeaf15e0f2592105",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-23.11",
-        "type": "indirect"
-      }
-    },
     "stylix": {
       "inputs": {
         "base16": "base16",