simplify nix setup

.github/workflows/pages.yml

@@ -8,7 +8,7 @@ jobs:
     steps:
       - uses: DeterminateSystems/nix-installer-action@main
       - uses: actions/checkout@v4
-      - run: nix build
+      - run: nix-build
       - uses: actions/upload-pages-artifact@v3
         with:
           path: result/

default.nix

@@ -0,0 +1,20 @@
+{
+  system ? builtins.currentSystem,
+  pkgs ? import (builtins.fetchTarball {
+    url = "https://github.com/nixos/nixpkgs/archive/56c0d09b76608a7fa28127a37d81d9003e46acf6.tar.gz";
+  }) { inherit system; },
+  papermod ? pkgs.fetchFromGitHub {
+    owner = "adityatelange";
+    repo = "hugo-papermod";
+    rev = "master";
+    hash = "sha256-Dv/QnYYG5KTQro95kzwgQeOS0nO2HyfBoSou5AsCFAI=";
+  },
+}:
+pkgs.stdenv.mkDerivation {
+  name = "website";
+  src = ./.;
+  postPatch = "mkdir themes && cp -r ${papermod} themes/papermod";
+  nativeBuildInputs = [ pkgs.hugo ];
+  buildPhase = "hugo";
+  installPhase = "cp -r public $out";
+}

flake.lock

@@ -1,77 +0,0 @@
-{
-  "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1725867797,
-        "narHash": "sha256-DW6NHvXHrWFUa0TY4TCf+M8uFIRhmV9H3smBZ2Pu7pk=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "cb97dfe6c051011be9cb13cd33103c907d9b2107",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "papermod": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1723905772,
-        "narHash": "sha256-iKKAAR5ipeimIgC137tbpkWlwIzNDAcPPKNLwdhW1CI=",
-        "owner": "adityatelange",
-        "repo": "hugo-papermod",
-        "rev": "58c4841c26325eaa788d9b13e65d5dfc95d9367c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "adityatelange",
-        "repo": "hugo-papermod",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "papermod": "papermod"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

flake.nix

@@ -1,36 +0,0 @@
-{
-  inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs";
-    flake-utils.url = "github:numtide/flake-utils";
-    papermod = {
-      url = "github:adityatelange/hugo-papermod";
-      flake = false;
-    };
-  };
-
-  outputs =
-    {
-      self,
-      nixpkgs,
-      flake-utils,
-      papermod,
-    }:
-    flake-utils.lib.eachDefaultSystem (
-      system:
-      let
-        pkgs = import nixpkgs { inherit system; };
-        website = pkgs.stdenv.mkDerivation {
-          name = "website";
-          src = ./.;
-          postPatch = "mkdir themes && cp -r ${papermod} themes/papermod";
-          nativeBuildInputs = [ pkgs.hugo ];
-          buildPhase = "hugo";
-          installPhase = "cp -r public $out";
-        };
-      in
-      {
-        packages.default = website;
-        devShells.default = pkgs.mkShell { packages = [ pkgs.hugo ]; };
-      }
-    );
-}