From 74cec7dd8e8278a939dc521ef57d243dde969342 Mon Sep 17 00:00:00 2001
From: Ryan Yin <xiaoyin_c@qq.com>
Date: Mon, 18 Dec 2023 00:44:18 +0800
Subject: [PATCH] feat: nix fmt

---
 .gitignore               |   1 +
 flake.lock               | 125 ++++++++++
 flake.nix                | 493 +++++++++++++++++++++------------------
 modules/nixos/server.nix |   1 -
 4 files changed, 389 insertions(+), 231 deletions(-)

diff --git a/.gitignore b/.gitignore
index 29f4f2fa..62ea0624 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 result
 result/
 .DS_Store
+.pre-commit-config.yaml
diff --git a/flake.lock b/flake.lock
index b28a7cb1..a04bd9db 100644
--- a/flake.lock
+++ b/flake.lock
@@ -274,6 +274,22 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
@@ -334,6 +350,24 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_3"
+      },
+      "locked": {
+        "lastModified": 1685518550,
+        "narHash": "sha256-o2d0KcvaXzTrPRIo0kOLV0/QXHhDQ5DTi+OxcjO8xqY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "a1720a10a6cfe8234c0e93907ffe81be440f4cef",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -356,6 +390,27 @@
         "type": "github"
       }
     },
+    "gitignore_2": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1660459072,
+        "narHash": "sha256-8DFJjXG8zqoONA1vXtgeKXy68KdJL5UaXR8NtVMUbx8=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -664,6 +719,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1685801374,
+        "narHash": "sha256-otaSUoFEMM+LjBI1XL/xGB5ao6IwnZOXc47qhIgJe8U=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c37ca420157f4abc31e26f436c1145f8951ff373",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1702312524,
@@ -760,6 +831,22 @@
         "type": "github"
       }
     },
+    "nixpkgs_7": {
+      "locked": {
+        "lastModified": 1689261696,
+        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nur-ryan4yin": {
       "inputs": {
         "nixpkgs": "nixpkgs_6"
@@ -795,6 +882,28 @@
         "type": "github"
       }
     },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "flake-utils": "flake-utils_2",
+        "gitignore": "gitignore_2",
+        "nixpkgs": "nixpkgs_7",
+        "nixpkgs-stable": "nixpkgs-stable_2"
+      },
+      "locked": {
+        "lastModified": 1702456155,
+        "narHash": "sha256-I2XhXGAecdGlqi6hPWYT83AQtMgL+aa3ulA85RAEgOk=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "007a45d064c1c32d04e1b8a0de5ef00984c419bc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks-nix": {
       "inputs": {
         "flake-compat": [
@@ -854,6 +963,7 @@
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nur-ryan4yin": "nur-ryan4yin",
         "nushell-scripts": "nushell-scripts",
+        "pre-commit-hooks": "pre-commit-hooks",
         "wallpapers": "wallpapers"
       }
     },
@@ -912,6 +1022,21 @@
         "type": "github"
       }
     },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "thead-kernel": {
       "flake": false,
       "locked": {
diff --git a/flake.nix b/flake.nix
index 21b8c714..bd51fd78 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,262 +13,292 @@
   # parameters in `outputs` are defined in `inputs` and can be referenced by their names.
   # However, `self` is an exception, this special parameter points to the `outputs` itself (self-reference)
   # The `@` syntax here is used to alias the attribute set of the inputs's parameter, making it convenient to use inside the function.
-  outputs = inputs @ {
-    self,
-    nixpkgs,
-    nixpkgs-unstable,
-    nix-darwin,
-    home-manager,
-    nixos-generators,
-    nixos-licheepi4a,
-    nixos-rk3588,
-    ...
-  }: let
-    username = "ryan";
-    userfullname = "Ryan Yin";
-    useremail = "xiaoyin_c@qq.com";
+  outputs =
+    inputs @ { self
+    , nixpkgs
+    , nixpkgs-unstable
+    , pre-commit-hooks
+    , nix-darwin
+    , home-manager
+    , nixos-generators
+    , nixos-licheepi4a
+    , nixos-rk3588
+    , ...
+    }:
+    let
+      username = "ryan";
+      userfullname = "Ryan Yin";
+      useremail = "xiaoyin_c@qq.com";
 
-    x64_system = "x86_64-linux";
-    x64_darwin = "x86_64-darwin";
-    riscv64_system = "riscv64-linux";
-    aarch64_system = "aarch64-linux";
-    allSystems = [x64_system x64_darwin riscv64_system aarch64_system];
+      x64_system = "x86_64-linux";
+      x64_darwin = "x86_64-darwin";
+      riscv64_system = "riscv64-linux";
+      aarch64_system = "aarch64-linux";
+      allSystems = [ x64_system x64_darwin riscv64_system aarch64_system ];
 
-    nixosSystem = import ./lib/nixosSystem.nix;
-    macosSystem = import ./lib/macosSystem.nix;
-    colmenaSystem = import ./lib/colmenaSystem.nix;
+      nixosSystem = import ./lib/nixosSystem.nix;
+      macosSystem = import ./lib/macosSystem.nix;
+      colmenaSystem = import ./lib/colmenaSystem.nix;
 
-    # 星野 アイ, Hoshino Ai
-    idol_ai_modules_i3 = {
-      nixos-modules = [
-        ./hosts/idols/ai
-        ./modules/nixos/i3.nix
-      ];
-      home-module = import ./home/linux/desktop-i3.nix;
-    };
-    idol_ai_modules_hyprland = {
-      nixos-modules = [
-        ./hosts/idols/ai
-        ./modules/nixos/hyprland.nix
-      ];
-      home-module = import ./home/linux/desktop-hyprland.nix;
-    };
-
-    # 星野 愛久愛海, Hoshino Akuamarin
-    idol_aquamarine_modules = {
-      nixos-modules = [
-        ./hosts/idols/aquamarine
-      ];
-      home-module = import ./home/linux/server.nix;
-    };
-    idol_aquamarine_tags = ["dist-build" "aqua"];
-
-    # 星野 瑠美衣, Hoshino Rubii
-    idol_ruby_modules = {
-      nixos-modules = [
-        ./hosts/idols/ruby
-      ];
-      home-module = import ./home/linux/server.nix;
-    };
-    idol_ruby_tags = ["dist-build" "ruby"];
-
-    # 有馬 かな, Arima Kana
-    idol_kana_modules = {
-      nixos-modules = [
-        ./hosts/idols/kana
-      ];
-      home-module = import ./home/linux/server.nix;
-    };
-    idol_kana_tags = ["dist-build" "kana"];
-
-    # 森友 望未, Moritomo Nozomi
-    rolling_nozomi_modules = {
-      nixos-modules = [
-        ./hosts/rolling_girls/nozomi
-      ];
-      # home-module = import ./home/linux/server-riscv64.nix;
-    };
-    rolling_nozomi_tags = ["riscv" "nozomi"];
-
-    # 小坂 結季奈, Kosaka Yukina
-    rolling_yukina_modules = {
-      nixos-modules = [
-        ./hosts/rolling_girls/yukina
-      ];
-      # home-module = import ./home/linux/server-riscv64.nix;
-    };
-    rolling_yukina_tags = ["riscv" "yukina"];
-
-    # 大木 鈴, Ōki Suzu
-    _12kingdoms_suzu_modules = {
-      nixos-modules = [
-        ./hosts/12kingdoms/suzu
-      ];
-      # home-module = import ./home/linux/server.nix;
-    };
-    _12kingdoms_suzu_tags = ["aarch" "suzu"];
-
-    x64_specialArgs =
-      {
-        inherit username userfullname useremail;
-        # use unstable branch for some packages to get the latest updates
-        pkgs-unstable = import nixpkgs-unstable {
-          system = x64_system; # refer the `system` parameter form outer scope recursively
-          # To use chrome, we need to allow the installation of non-free software
-          config.allowUnfree = true;
-        };
-      }
-      // inputs;
-  in {
-    nixosConfigurations = let
-      base_args = {
-        inherit home-manager nixos-generators;
-        nixpkgs = nixpkgs; # or nixpkgs-unstable
-        system = x64_system;
-        specialArgs = x64_specialArgs;
+      # 星野 アイ, Hoshino Ai
+      idol_ai_modules_i3 = {
+        nixos-modules = [
+          ./hosts/idols/ai
+          ./modules/nixos/i3.nix
+        ];
+        home-module = import ./home/linux/desktop-i3.nix;
       };
-    in {
-      # ai with i3 window manager
-      ai_i3 = nixosSystem (idol_ai_modules_i3 // base_args);
-      # ai with hyprland compositor
-      ai_hyprland = nixosSystem (idol_ai_modules_hyprland // base_args);
-
-      # three virtual machines without desktop environment.
-      aquamarine = nixosSystem (idol_aquamarine_modules // base_args);
-      ruby = nixosSystem (idol_ruby_modules // base_args);
-      kana = nixosSystem (idol_kana_modules // base_args);
-    };
-
-    # colmena - remote deployment via SSH
-    colmena = let
-      # x86_64 related
-      x64_base_args = {
-        inherit home-manager;
-        nixpkgs = nixpkgs; # or nixpkgs-unstable
-        specialArgs = x64_specialArgs;
+      idol_ai_modules_hyprland = {
+        nixos-modules = [
+          ./hosts/idols/ai
+          ./modules/nixos/hyprland.nix
+        ];
+        home-module = import ./home/linux/desktop-hyprland.nix;
       };
 
-      # riscv64 related
-      # using the same nixpkgs as nixos-licheepi4a to utilize the cross-compilation cache.
-      lpi4a_pkgs = import nixos-licheepi4a.inputs.nixpkgs {system = x64_system;};
-      lpi4a_specialArgs =
-        {
-          inherit username userfullname useremail;
-          pkgsKernel = nixos-licheepi4a.packages.${x64_system}.pkgsKernelCross;
-        }
-        // inputs;
-      lpi4a_base_args = {
-        inherit home-manager;
-        nixpkgs = nixos-licheepi4a.inputs.nixpkgs; # or nixpkgs-unstable
-        specialArgs = lpi4a_specialArgs;
-        targetUser = "root";
+      # 星野 愛久愛海, Hoshino Akuamarin
+      idol_aquamarine_modules = {
+        nixos-modules = [
+          ./hosts/idols/aquamarine
+        ];
+        home-module = import ./home/linux/server.nix;
       };
+      idol_aquamarine_tags = [ "dist-build" "aqua" ];
 
-      # aarch64 related
-      # using the same nixpkgs as nixos-rk3588 to utilize the cross-compilation cache.
-      rk3588_pkgs = import nixos-rk3588.inputs.nixpkgs {system = x64_system;};
-      rk3588_specialArgs =
-        {
-          inherit username userfullname useremail;
-        }
-        // nixos-rk3588.inputs;
-      rk3588_base_args = {
-        inherit home-manager;
-        nixpkgs = nixos-rk3588.inputs.nixpkgs; # or nixpkgs-unstable
-        specialArgs = rk3588_specialArgs;
-        targetUser = "root";
+      # 星野 瑠美衣, Hoshino Rubii
+      idol_ruby_modules = {
+        nixos-modules = [
+          ./hosts/idols/ruby
+        ];
+        home-module = import ./home/linux/server.nix;
       };
-    in {
-      meta = {
-        nixpkgs = import nixpkgs {system = x64_system;};
-        specialArgs = x64_specialArgs;
+      idol_ruby_tags = [ "dist-build" "ruby" ];
 
-        nodeSpecialArgs = {
-          # riscv64 SBCs
-          nozomi = lpi4a_specialArgs;
-          yukina = lpi4a_specialArgs;
-
-          # aarch64 SBCs
-          suzu = rk3588_specialArgs;
-        };
-        nodeNixpkgs = {
-          nozomi = lpi4a_pkgs;
-          yukina = lpi4a_pkgs;
-
-          # aarch64 SBCs
-          suzu = rk3588_pkgs;
-        };
+      # 有馬 かな, Arima Kana
+      idol_kana_modules = {
+        nixos-modules = [
+          ./hosts/idols/kana
+        ];
+        home-module = import ./home/linux/server.nix;
       };
+      idol_kana_tags = [ "dist-build" "kana" ];
 
-      # proxmox virtual machines(x86_64)
-      aquamarine = colmenaSystem (idol_aquamarine_modules // x64_base_args // {host_tags = idol_aquamarine_tags;});
-      ruby = colmenaSystem (idol_ruby_modules // x64_base_args // {host_tags = idol_ruby_tags;});
-      kana = colmenaSystem (idol_kana_modules // x64_base_args // {host_tags = idol_kana_tags;});
+      # 森友 望未, Moritomo Nozomi
+      rolling_nozomi_modules = {
+        nixos-modules = [
+          ./hosts/rolling_girls/nozomi
+        ];
+        # home-module = import ./home/linux/server-riscv64.nix;
+      };
+      rolling_nozomi_tags = [ "riscv" "nozomi" ];
 
-      # riscv64 SBCs
-      nozomi = colmenaSystem (rolling_nozomi_modules // lpi4a_base_args // {host_tags = rolling_nozomi_tags;});
-      yukina = colmenaSystem (rolling_yukina_modules // lpi4a_base_args // {host_tags = rolling_yukina_tags;});
+      # 小坂 結季奈, Kosaka Yukina
+      rolling_yukina_modules = {
+        nixos-modules = [
+          ./hosts/rolling_girls/yukina
+        ];
+        # home-module = import ./home/linux/server-riscv64.nix;
+      };
+      rolling_yukina_tags = [ "riscv" "yukina" ];
 
-      # aarch64 SBCs
-      suzu = colmenaSystem (_12kingdoms_suzu_modules // rk3588_base_args // {host_tags = _12kingdoms_suzu_tags;});
-    };
+      # 大木 鈴, Ōki Suzu
+      _12kingdoms_suzu_modules = {
+        nixos-modules = [
+          ./hosts/12kingdoms/suzu
+        ];
+        # home-module = import ./home/linux/server.nix;
+      };
+      _12kingdoms_suzu_tags = [ "aarch" "suzu" ];
 
-    # take system images for idols
-    # https://github.com/nix-community/nixos-generators
-    packages."${x64_system}" =
-      # genAttrs returns an attribute set with the given keys and values(host => image).
-      nixpkgs.lib.genAttrs [
-        "ai_i3"
-        "ai_hyprland"
-      ] (
-        # generate iso image for hosts with desktop environment
-        host:
-          self.nixosConfigurations.${host}.config.formats.iso
-      )
-      // nixpkgs.lib.genAttrs [
-        "aquamarine"
-        "ruby"
-        "kana"
-      ] (
-        # generate proxmox image for virtual machines without desktop environment
-        host:
-          self.nixosConfigurations.${host}.config.formats.proxmox
-      );
-
-    # macOS's configuration, for work.
-    darwinConfigurations = let
-      system = x64_darwin;
-      specialArgs =
+      x64_specialArgs =
         {
           inherit username userfullname useremail;
           # use unstable branch for some packages to get the latest updates
           pkgs-unstable = import nixpkgs-unstable {
-            inherit system; # refer the `system` parameter form outer scope recursively
+            system = x64_system; # refer the `system` parameter form outer scope recursively
             # To use chrome, we need to allow the installation of non-free software
             config.allowUnfree = true;
           };
         }
         // inputs;
-      base_args = {
-        inherit nix-darwin home-manager system specialArgs nixpkgs;
-      };
-    in {
-      harmonica = macosSystem (base_args
-        // {
-          darwin-modules = [
-            ./hosts/harmonica
-          ];
-          home-module = import ./home/darwin;
-        });
-    };
+    in
+    {
+      nixosConfigurations =
+        let
+          base_args = {
+            inherit home-manager nixos-generators;
+            nixpkgs = nixpkgs; # or nixpkgs-unstable
+            system = x64_system;
+            specialArgs = x64_specialArgs;
+          };
+        in
+        {
+          # ai with i3 window manager
+          ai_i3 = nixosSystem (idol_ai_modules_i3 // base_args);
+          # ai with hyprland compositor
+          ai_hyprland = nixosSystem (idol_ai_modules_hyprland // base_args);
 
-    # format the nix code in this flake
-    # alejandra is a nix formatter with a beautiful output
-    formatter = nixpkgs.lib.genAttrs allSystems (
-      system:
+          # three virtual machines without desktop environment.
+          aquamarine = nixosSystem (idol_aquamarine_modules // base_args);
+          ruby = nixosSystem (idol_ruby_modules // base_args);
+          kana = nixosSystem (idol_kana_modules // base_args);
+        };
+
+      # colmena - remote deployment via SSH
+      colmena =
+        let
+          # x86_64 related
+          x64_base_args = {
+            inherit home-manager;
+            nixpkgs = nixpkgs; # or nixpkgs-unstable
+            specialArgs = x64_specialArgs;
+          };
+
+          # riscv64 related
+          # using the same nixpkgs as nixos-licheepi4a to utilize the cross-compilation cache.
+          lpi4a_pkgs = import nixos-licheepi4a.inputs.nixpkgs { system = x64_system; };
+          lpi4a_specialArgs =
+            {
+              inherit username userfullname useremail;
+              pkgsKernel = nixos-licheepi4a.packages.${x64_system}.pkgsKernelCross;
+            }
+            // inputs;
+          lpi4a_base_args = {
+            inherit home-manager;
+            nixpkgs = nixos-licheepi4a.inputs.nixpkgs; # or nixpkgs-unstable
+            specialArgs = lpi4a_specialArgs;
+            targetUser = "root";
+          };
+
+          # aarch64 related
+          # using the same nixpkgs as nixos-rk3588 to utilize the cross-compilation cache.
+          rk3588_pkgs = import nixos-rk3588.inputs.nixpkgs { system = x64_system; };
+          rk3588_specialArgs =
+            {
+              inherit username userfullname useremail;
+            }
+            // nixos-rk3588.inputs;
+          rk3588_base_args = {
+            inherit home-manager;
+            nixpkgs = nixos-rk3588.inputs.nixpkgs; # or nixpkgs-unstable
+            specialArgs = rk3588_specialArgs;
+            targetUser = "root";
+          };
+        in
+        {
+          meta = {
+            nixpkgs = import nixpkgs { system = x64_system; };
+            specialArgs = x64_specialArgs;
+
+            nodeSpecialArgs = {
+              # riscv64 SBCs
+              nozomi = lpi4a_specialArgs;
+              yukina = lpi4a_specialArgs;
+
+              # aarch64 SBCs
+              suzu = rk3588_specialArgs;
+            };
+            nodeNixpkgs = {
+              nozomi = lpi4a_pkgs;
+              yukina = lpi4a_pkgs;
+
+              # aarch64 SBCs
+              suzu = rk3588_pkgs;
+            };
+          };
+
+          # proxmox virtual machines(x86_64)
+          aquamarine = colmenaSystem (idol_aquamarine_modules // x64_base_args // { host_tags = idol_aquamarine_tags; });
+          ruby = colmenaSystem (idol_ruby_modules // x64_base_args // { host_tags = idol_ruby_tags; });
+          kana = colmenaSystem (idol_kana_modules // x64_base_args // { host_tags = idol_kana_tags; });
+
+          # riscv64 SBCs
+          nozomi = colmenaSystem (rolling_nozomi_modules // lpi4a_base_args // { host_tags = rolling_nozomi_tags; });
+          yukina = colmenaSystem (rolling_yukina_modules // lpi4a_base_args // { host_tags = rolling_yukina_tags; });
+
+          # aarch64 SBCs
+          suzu = colmenaSystem (_12kingdoms_suzu_modules // rk3588_base_args // { host_tags = _12kingdoms_suzu_tags; });
+        };
+
+      # take system images for idols
+      # https://github.com/nix-community/nixos-generators
+      packages."${x64_system}" =
+        # genAttrs returns an attribute set with the given keys and values(host => image).
+        nixpkgs.lib.genAttrs [
+          "ai_i3"
+          "ai_hyprland"
+        ]
+          (
+            # generate iso image for hosts with desktop environment
+            host:
+            self.nixosConfigurations.${host}.config.formats.iso
+          )
+        // nixpkgs.lib.genAttrs [
+          "aquamarine"
+          "ruby"
+          "kana"
+        ]
+          (
+            # generate proxmox image for virtual machines without desktop environment
+            host:
+            self.nixosConfigurations.${host}.config.formats.proxmox
+          );
+
+      # macOS's configuration, for work.
+      darwinConfigurations =
+        let
+          system = x64_darwin;
+          specialArgs =
+            {
+              inherit username userfullname useremail;
+              # use unstable branch for some packages to get the latest updates
+              pkgs-unstable = import nixpkgs-unstable {
+                inherit system; # refer the `system` parameter form outer scope recursively
+                # To use chrome, we need to allow the installation of non-free software
+                config.allowUnfree = true;
+              };
+            }
+            // inputs;
+          base_args = {
+            inherit nix-darwin home-manager system specialArgs nixpkgs;
+          };
+        in
+        {
+          harmonica = macosSystem (base_args
+            // {
+            darwin-modules = [
+              ./hosts/harmonica
+            ];
+            home-module = import ./home/darwin;
+          });
+        };
+
+      # format the nix code in this flake
+      # alejandra is a nix formatter with a beautiful output
+      formatter = nixpkgs.lib.genAttrs allSystems (
+        system:
         nixpkgs.legacyPackages.${system}.alejandra
-    );
-  };
+      );
+
+      # pre-commit hooks for nix code
+      checks = nixpkgs.lib.genAttrs allSystems (
+        system: {
+          pre-commit-check = pre-commit-hooks.lib.${system}.run {
+            src = ./.;
+            hooks = {
+              alejandra.enable = true;
+            };
+          };
+        }
+      );
+      devShells = nixpkgs.lib.genAttrs allSystems (
+        system: {
+          default = nixpkgs.legacyPackages.${system}.mkShell {
+            inherit (self.checks.${system}.pre-commit-check) shellHook;
+          };
+        }
+      );
+    };
 
   # This is the standard format for flake.nix. `inputs` are the dependencies of the flake,
   # Each item in `inputs` will be passed as a parameter to the `outputs` function after being pulled and built.
@@ -281,6 +311,9 @@
     # nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
 
+    # add git hooks to format nix code before commit
+    pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
+
     # for macos
     nixpkgs-darwin.url = "github:nixos/nixpkgs/nixpkgs-23.11-darwin";
     nix-darwin = {
diff --git a/modules/nixos/server.nix b/modules/nixos/server.nix
index 66a295c9..6a1f9c47 100644
--- a/modules/nixos/server.nix
+++ b/modules/nixos/server.nix
@@ -3,7 +3,6 @@
     ./base/i18n.nix
     ./base/misc.nix
     ./base/networking.nix
-    ./base/peripherals.nix
     ./base/remote-building.nix
     ./base/user-group.nix
     ./base/visualisation.nix