Use nix and nix-index from nixpkgs instead of their own flakes

flake.lock

@@ -1,85 +1,12 @@
 {
   "nodes": {
-    "flake-compat": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1641205782,
-        "narHash": "sha256-4jY7RCWUoZ9cKD8co0/4tFARpWB+57+r1bLLvXNJliY=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "b7547d3eed6f32d06102ead8991ec52ab0a4f1a7",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "lowdown-src": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1633514407,
-        "narHash": "sha256-Dw32tiMjdK9t3ETl5fzGrutQTzh2rufgZV4A/BbxuD4=",
-        "owner": "kristapsdz",
-        "repo": "lowdown",
-        "rev": "d2c2b44ff6c27b936ec27358a2653caaef8f73b8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "kristapsdz",
-        "repo": "lowdown",
-        "type": "github"
-      }
-    },
-    "nix": {
-      "inputs": {
-        "lowdown-src": "lowdown-src",
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-regression": "nixpkgs-regression"
-      },
-      "locked": {
-        "lastModified": 1673354285,
-        "narHash": "sha256-nSZH3ziwlMBe83pfAeMZWy6+URpEQISnZNmdO438dC8=",
-        "owner": "NixOS",
-        "repo": "nix",
-        "rev": "877e7a5ccf21279d9e027867e63181b2b9a6a15a",
-        "type": "github"
-      },
-      "original": {
-        "id": "nix",
-        "type": "indirect"
-      }
-    },
-    "nix-index": {
-      "inputs": {
-        "flake-compat": "flake-compat",
-        "nixpkgs": [
-          "nix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1673358637,
-        "narHash": "sha256-UVKfgjnkU8U5+z96CiKUs1pnIFd3/2cJuvcQmWC0Hoo=",
-        "owner": "bennofs",
-        "repo": "nix-index",
-        "rev": "7ac935501a0f4ec094d15a35acf2bb35442259bb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "bennofs",
-        "repo": "nix-index",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1670461440,
+        "lastModified": 1673527292,
-        "narHash": "sha256-jy1LB8HOMKGJEGXgzFRLDU1CBGL0/LlkolgnqIsF0D8=",
+        "narHash": "sha256-903EpRSDCfUvic7Hsiqwy+h7zlMTLAUbCXkEGGriCfM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "04a75b2eecc0acf6239acf9dd04485ff8d14f425",
+        "rev": "6a3f9996408c970b99b8b992b11bb249d1455b62",
         "type": "github"
       },
       "original": {
@@ -89,30 +16,9 @@
         "type": "github"
       }
     },
-    "nixpkgs-regression": {
-      "locked": {
-        "lastModified": 1643052045,
-        "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
-        "nix": "nix",
+        "nixpkgs": "nixpkgs"
-        "nix-index": "nix-index",
-        "nixpkgs": [
-          "nix",
-          "nixpkgs"
-        ]
       }
     }
   },

flake.nix

@@ -1,22 +1,15 @@
 {
   description = "Script for generating Nixpkgs/NixOS channels";
 
-  inputs.nixpkgs.follows = "nix/nixpkgs";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11-small";
-  inputs.nix-index = {
-    url = "github:bennofs/nix-index";
-    inputs.nixpkgs.follows = "nix/nixpkgs";
-  };
 
-  outputs = { self, nixpkgs, nix, nix-index }:
+  outputs = { self, nixpkgs }:
-    let nix-index' = nix-index.packages.x86_64-linux.nix-index; in
     {
-
       overlays.default = final: prev: {
-
         nixos-channel-native-programs = with final; stdenv.mkDerivation {
           name = "nixos-channel-native-programs";
           buildInputs = [
-              final.nix
+              nix
               pkgconfig
               boehmgc
               nlohmann_json
@@ -38,8 +31,8 @@
         nixos-channel-scripts = with final; stdenv.mkDerivation {
           name = "nixos-channel-scripts";
 
-          buildInputs = with final.perlPackages;
+          buildInputs = with perlPackages;
-            [ final.nix
+            [ nix
               sqlite
               makeWrapper
               perl
@@ -52,7 +45,7 @@
               brotli
               jq
               nixos-channel-native-programs
-              nix-index'
+              nix-index
             ];
 
           buildCommand = ''
@@ -61,7 +54,7 @@
             cp ${./mirror-nixos-branch.pl} $out/bin/mirror-nixos-branch
             wrapProgram $out/bin/mirror-nixos-branch \
               --set PERL5LIB $PERL5LIB \
-              --prefix PATH : ${wget}/bin:${git}/bin:${final.nix}/bin:${gnutar}/bin:${xz}/bin:${rsync}/bin:${openssh}/bin:${nix-index'}/bin:${nixos-channel-native-programs}/bin:$out/bin
+              --prefix PATH : ${lib.makeBinPath [ wget git nix gnutar xz rsync openssh nix-index nixos-channel-native-programs ]}
 
             patchShebangs $out/bin
           '';
@@ -71,8 +64,7 @@
 
       defaultPackage.x86_64-linux = (import nixpkgs {
         system = "x86_64-linux";
-        overlays = [ nix.overlays.default self.overlays.default ];
+        overlays = [ self.overlays.default ];
       }).nixos-channel-scripts;
-
     };
 }