flake.lock: Update

Flake lock file updates:

• Updated input 'nix-super/nixpkgs':
    follows 'nixpkgs'
  → 'github:NixOS/nixpkgs/530a53dcbc9437363471167a5e4762c5fcfa34a1' (2022-02-19)

flake.lock

@@ -411,9 +411,7 @@
     "nix-super": {
       "inputs": {
         "lowdown-src": "lowdown-src",
-        "nixpkgs": [
+        "nixpkgs": "nixpkgs",
-          "nixpkgs"
-        ],
         "nixpkgs-regression": "nixpkgs-regression"
       },
       "locked": {
@@ -475,18 +473,17 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1651558728,
+        "lastModified": 1645296114,
-        "narHash": "sha256-8HzyRnWlgZluUrVFNOfZAOlA1fghpOSezXvxhalGMUo=",
+        "narHash": "sha256-y53N7TyIkXsjMpOG7RhvqJFGDacLs9HlyHeSTBioqYU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "cbe587c735b734405f56803e267820ee1559e6c1",
+        "rev": "530a53dcbc9437363471167a5e4762c5fcfa34a1",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "id": "nixpkgs",
-        "ref": "nixos-unstable",
+        "ref": "nixos-21.05-small",
-        "repo": "nixpkgs",
+        "type": "indirect"
-        "type": "github"
       }
     },
     "nixpkgs-regression": {
@@ -504,6 +501,22 @@
         "type": "indirect"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1651558728,
+        "narHash": "sha256-8HzyRnWlgZluUrVFNOfZAOlA1fghpOSezXvxhalGMUo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "cbe587c735b734405f56803e267820ee1559e6c1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "node2nix": {
       "flake": false,
       "locked": {
@@ -573,7 +586,7 @@
         "nix-crx": "nix-crx",
         "nix-super": "nix-super",
         "nixos-hardware": "nixos-hardware",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2"
       }
     },
     "rust-overlay": {