feat: nix flake update, add pandoc & nixfmt

Author: ryan4yin

.gitignore

@@ -21,4 +21,4 @@ TODOs.md
 .direnv/
 .pre-commit-config.yaml
 .temp
-*.epub
+*.epub

flake.lock

@@ -7,79 +7,88 @@
     pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
   };
 
-  outputs = {
-    self,
-    nixpkgs,
-    flake-utils,
-    pre-commit-hooks,
-  }:
-    flake-utils.lib.eachDefaultSystem (system: let
-      overlays = [
-        (self: super: rec {
-          nodejs = super.nodejs_22;
-          pnpm = super.pnpm.override {inherit nodejs;};
-          yarn = super.yarn.override {inherit nodejs;};
-          prettier = super.nodePackages.prettier;
-        })
-      ];
-      pkgs = import nixpkgs {inherit overlays system;};
-      pkgs_chromium = import nixpkgs {inherit system;};
-      packages = with pkgs; [
-        nodejs
-        pnpm
-        yarn
-        prettier
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      pre-commit-hooks,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        overlays = [
+          (self: super: rec {
+            nodejs = super.nodejs_22;
+            pnpm = super.pnpm.override { inherit nodejs; };
+            yarn = super.yarn.override { inherit nodejs; };
+            prettier = super.nodePackages.prettier;
+          })
+        ];
+        pkgs = import nixpkgs { inherit overlays system; };
+        pkgs_chromium = import nixpkgs { inherit system; };
+        packages = with pkgs; [
+          nodejs
+          pnpm
+          yarn
+          prettier
 
-        git
-        typos
-        alejandra
-      ];
-    in {
-      checks = {
-        pre-commit-check = pre-commit-hooks.lib.${system}.run {
-          src = ./.;
-          hooks = {
-            alejandra.enable = true; # formatter
-            # Source code spell checker
-            typos = {
-              enable = true;
-              settings = {
-                write = true; # Automatically fix typos
-                ignored-words = [];
-                # configPath = "./.typos.toml"; # relative to the flake root
+          git
+          typos
+          nixfmt
+          pandoc
+        ];
+      in
+      {
+        checks = {
+          pre-commit-check = pre-commit-hooks.lib.${system}.run {
+            src = ./.;
+            hooks = {
+              nixfmt-rfc-style = {
+                enable = true;
+                settings.width = 100;
               };
-            };
-            prettier = {
-              enable = true;
-              settings = {
-                write = true; # Automatically format files
-                configPath = "./.prettierrc.yaml"; # relative to the flake root
+              # Source code spell checker
+              typos = {
+                enable = true;
+                settings = {
+                  write = true; # Automatically fix typos
+                  # configPath = ".typos.toml"; # relative to the flake root
+                  # exclude = "";
+                };
+              };
+              prettier = {
+                enable = true;
+                settings = {
+                  write = true; # Automatically format files
+                  configPath = ".prettierrc.yaml"; # relative to the flake root
+                };
               };
             };
           };
         };
-      };
 
-      devShells.default = pkgs.mkShell {
-        inherit packages;
+        devShells.default = pkgs.mkShell {
+          inherit packages;
 
-        shellHook = ''
-          echo "node `node --version`"
-          ${self.checks.${system}.pre-commit-check.shellHook}
-        '';
-      };
+          shellHook = ''
+            echo "node `node --version`"
+            ${self.checks.${system}.pre-commit-check.shellHook}
+          '';
+        };
 
-      devShells.export-pdf = pkgs.mkShell {
-        inherit packages;
+        devShells.export-pdf = pkgs.mkShell {
+          inherit packages;
 
-        shellHook = ''
-          echo "node `node --version`"
+          shellHook = ''
+            echo "node `node --version`"
 
-          # Set Puppeteer to not download Chrome, cause it doesn't work on NixOS
-          export PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1
-          # Set Puppeteer to use Chromium from Nixpkgs
-          export PUPPETEER_EXECUTABLE_PATH=${pkgs_chromium.chromium.outPath}/bin/chromium
-        '';
-      };
-    });
+            # Set Puppeteer to not download Chrome, cause it doesn't work on NixOS
+            export PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1
+            # Set Puppeteer to use Chromium from Nixpkgs
+            export PUPPETEER_EXECUTABLE_PATH=${pkgs_chromium.chromium.outPath}/bin/chromium
+          '';
+        };
+      }
+    );
 }