feat: Add a bunch of precommit hooks

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -1,2 +1,3 @@
 result
 .direnv/
+.pre-commit-config.yaml

flake.lock

@@ -172,6 +172,22 @@
       }
     },
     "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1673956053,
@@ -283,6 +299,24 @@
         "type": "github"
       }
     },
+    "flake-utils_3": {
+      "inputs": {
+        "systems": "systems_3"
+      },
+      "locked": {
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "fromYaml": {
       "flake": false,
       "locked": {
@@ -299,6 +333,27 @@
         "type": "github"
       }
     },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1703887061,
+        "narHash": "sha256-gGPa9qWNc6eCXT/+Z5/zMkyYOuRZqeFZBDbopNZQkuY=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "43e1aa1308018f37118e34d3a9cb4f5e75dc11d5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "haumea": {
       "inputs": {
         "nixpkgs": "nixpkgs"
@@ -602,6 +657,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1704874635,
+        "narHash": "sha256-YWuCrtsty5vVZvu+7BchAxmcYzTMfolSPP5io8+WYCg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3dc440faeee9e889fe2d1b4d25ad0f430d449356",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1705133751,
@@ -711,6 +782,30 @@
         "type": "github"
       }
     },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "flake-utils": "flake-utils_3",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1705229514,
+        "narHash": "sha256-itILy0zimR/iyUGq5Dgg0fiW8plRDyxF153LWGsg3Cw=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "ffa9a5b90b0acfaa03b1533b83eaf5dead819a05",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-schemas": "flake-schemas",
@@ -718,6 +813,7 @@
         "home-manager": "home-manager",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_2",
+        "pre-commit-hooks": "pre-commit-hooks",
         "stylix": "stylix"
       }
     },
@@ -731,7 +827,7 @@
         "base16-kitty": "base16-kitty",
         "base16-tmux": "base16-tmux",
         "base16-vim": "base16-vim",
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "home-manager": [
           "home-manager"
         ],
@@ -781,6 +877,21 @@
         "repo": "default",
         "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"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -23,8 +23,21 @@
 
   inputs.nixos-hardware.url = "https://flakehub.com/f/NixOS/nixos-hardware/0.1.*.tar.gz";
 
+  inputs.pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
+  inputs.pre-commit-hooks.inputs.nixpkgs.follows = "nixpkgs";
+
   # Flake outputs that other flakes can use
-  outputs = { self, flake-schemas, nixpkgs, stylix, home-manager, home-config, nixos-hardware, ... }:
+  outputs =
+    { self
+    , flake-schemas
+    , nixpkgs
+    , stylix
+    , home-manager
+    , home-config
+    , nixos-hardware
+    , pre-commit-hooks
+    , ...
+    }:
     let
       inherit (nixpkgs) lib;
       # Helpers for producing system-specific outputs
@@ -43,6 +56,13 @@
       # Schemas tell Nix about the structure of your flake's outputs
       schemas = flake-schemas.schemas;
 
+      checks = forEachSupportedSystem ({ pkgs, system }: {
+        pre-commit-check = pre-commit-hooks.lib.${system}.run {
+          src = builtins.path { path = ./.; name = "configuration.nix"; };
+          hooks.nixpkgs-fmt.enable = true;
+        };
+      });
+
       packages = doc;
 
       # Nix files formatter (run `nix fmt`)
@@ -120,5 +140,12 @@
           default = nixosModule;
           inherit nixosModule;
         } // machineModules;
+
+      devShells = forEachSupportedSystem ({ pkgs, system }:
+        {
+          default = pkgs.mkShell {
+            inherit (self.checks.${system}.pre-commit-check) shellHook;
+          };
+        });
     };
 }