flakes: Update

flake.lock

@@ -84,7 +84,10 @@
     },
     "home-manager_2": {
       "inputs": {
-        "nixpkgs": "nixpkgs_4"
+        "nixpkgs": [
+          "ostylk",
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1638281721,
@@ -118,7 +121,7 @@
     },
     "naersk": {
       "inputs": {
-        "nixpkgs": "nixpkgs_6"
+        "nixpkgs": "nixpkgs_5"
       },
       "locked": {
         "lastModified": 1639947939,
@@ -233,8 +236,10 @@
         "type": "path"
       },
       "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
+        "owner": "nixos",
+        "ref": "nixos-21.05",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs_5": {
@@ -325,7 +330,10 @@
     "rnix-lsp": {
       "inputs": {
         "naersk": "naersk",
-        "nixpkgs": "nixpkgs_7",
+        "nixpkgs": [
+          "ostylk",
+          "nixpkgs"
+        ],
         "utils": "utils"
       },
       "locked": {