nix: add pre-commit-hooks

.gitignore

@@ -26,3 +26,6 @@ target/
 
 # nix
 result/
+
+# pre-commit
+/.pre-commit-config.yaml

flake.lock

@@ -20,6 +20,61 @@
         "type": "github"
       }
     },
+    "flake-compat": {
+      "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-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"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1711703276,
@@ -36,6 +91,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1710695816,
+        "narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "614b4613980a522ba49f0d194531beddbb7220d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1712543224,
@@ -52,11 +123,50 @@
         "type": "github"
       }
     },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1710765496,
+        "narHash": "sha256-p7ryWEeQfMwTB6E0wIUd5V2cFTgq+DRRBz2hYGnJZyA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e367f7a1fb93137af22a3908f00b9a35e2d286a7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "gitignore": "gitignore",
+        "nixpkgs": "nixpkgs_3",
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1712579741,
+        "narHash": "sha256-igpsH+pa6yFwYOdah3cFciCk8gw+ytniG9quf5f/q84=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "70f504012f0a132ac33e56988e1028d88a48855c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "fenix": "fenix",
         "nixpkgs": "nixpkgs_2",
-        "systems": "systems"
+        "pre-commit-hooks": "pre-commit-hooks",
+        "systems": "systems_2"
       }
     },
     "rust-analyzer-src": {
@@ -77,6 +187,21 @@
       }
     },
     "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
       "locked": {
         "lastModified": 1689347949,
         "narHash": "sha256-12tWmuL2zgBgZkdoB6qXZsgJEH9LR3oUgpaQq2RbI80=",

flake.nix

@@ -5,6 +5,7 @@
     systems.url = "github:nix-systems/default-linux";
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     fenix.url = "github:nix-community/fenix/monthly";
+    pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
   };
 
   outputs = {
@@ -12,7 +13,8 @@
     systems,
     nixpkgs,
     fenix,
-  } @ inputs: let
+    pre-commit-hooks,
+  }: let
     eachSystem = nixpkgs.lib.genAttrs (import systems);
     pkgsFor = eachSystem (system:
       import nixpkgs {
@@ -22,7 +24,7 @@
   in {
     packages = eachSystem (system: let
       pkgs = nixpkgs.legacyPackages.${system};
-      version = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package.version;
+      inherit ((builtins.fromTOML (builtins.readFile ./Cargo.toml)).package) version;
     in {
       default = pkgsFor.${system}.rustPlatform.buildRustPackage {
         pname = "forcebot_rs";
@@ -40,8 +42,23 @@
         doCheck = false;
       };
     });
+    checks = eachSystem (system: {
+      pre-commit-check = pre-commit-hooks.lib.${system}.run {
+        src = ./.;
+        hooks = {
+          # rust
+          rustfmt.enable = true;
+          clippy.enable = true;
+          # nix
+          statix.enable = true;
+          alejandra.enable = true;
+          deadnix.enable = true;
+        };
+      };
+    });
     devShells = eachSystem (system: {
       default = pkgsFor.${system}.mkShell {
+        inherit (self.checks.${system}.pre-commit-check) shellHook;
         packages = with pkgsFor.${system}; [
           nil
           alejandra

nix/module.nix

@@ -17,7 +17,7 @@ in {
 
     package = mkOption {
       type = types.package;
-      default = self.packages.${system}.default;
+      inherit (self.packages.${system}) default;
     };
   };
 

statix.toml

@@ -0,0 +1,3 @@
+disabled = []
+nix_version = '2.4'
+ignore = ['.direnv']