Base scaffold

.gitignore

@@ -1,2 +1,3 @@
 /target
 .direnv
+result

.gitlab-ci.yml

@@ -0,0 +1,8 @@
+phases:
+  - check
+
+check:
+  tags:
+    - nix
+  script:
+    - nix flake check

flake.lock

@@ -18,6 +18,22 @@
         "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-parts": {
       "inputs": {
         "nixpkgs-lib": "nixpkgs-lib"
@@ -51,9 +67,51 @@
         "type": "github"
       }
     },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "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"
+      }
+    },
+    "hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1728778939,
+        "narHash": "sha256-WybK5E3hpGxtCYtBwpRj1E9JoiVxe+8kX83snTNaFHE=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "ff68f91754be6f3427e4986d7949e6273659be1d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
     "naersk": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs_3"
       },
       "locked": {
         "lastModified": 1721727458,
@@ -97,7 +155,39 @@
         "url": "https://github.com/NixOS/nixpkgs/archive/fb192fec7cc7a4c26d51779e9bab07ce6fa5597a.tar.gz"
       }
     },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1720386169,
+        "narHash": "sha256-NGKVY4PjzwAa4upkGtAMz1npHGoRzWotlSnVlqI40mo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "194846768975b7ad2c4988bdb82572c00222c0d7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1719082008,
+        "narHash": "sha256-jHJSUH619zBQ6WdC21fFAlDxHErKVDJ5fpN0Hgx4sjs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9693852a2070b398ee123a329e68f0dab5526681",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 0,
         "narHash": "sha256-HP89HZOT0ReIbI7IJZJQoJgxvB2Tn28V6XS3MNKnfLs=",
@@ -109,7 +199,7 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1728538411,
         "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
@@ -130,8 +220,9 @@
         "devshell": "devshell",
         "flake-parts": "flake-parts",
         "flake-root": "flake-root",
+        "hooks": "hooks",
         "naersk": "naersk",
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": "nixpkgs_4"
       }
     }
   },

flake.nix

@@ -6,12 +6,12 @@
     devshell.url = "github:numtide/devshell";
     flake-parts.url = "github:hercules-ci/flake-parts";
     flake-root.url = "github:srid/flake-root";
+    hooks.url = "github:cachix/git-hooks.nix";
     naersk.url = "github:nix-community/naersk";
-		#process-compose.url = "github:Platonic-Systems/process-compose-flake";
-		#services-flake.url = "github:juspay/services-flake";
   };
 
-	outputs = { flake-parts, ... }@inputs:
+  outputs =
+    { flake-parts, ... }@inputs:
     flake-parts.lib.mkFlake { inherit inputs; } {
       imports = [
         inputs.devshell.flakeModule
@@ -20,58 +20,87 @@
       ];
       flake = {
         # Universal things
-			overlays.default = final: prev: {};
+        # final: prev:
+        overlays.default = _: _: { };
       };
       systems = [
         "x86_64-linux"
         "aarch64-linux"
         "aarch64-darwin"
       ];
-		perSystem = { pkgs, ... }@inputs': let
+      perSystem =
+        { pkgs, ... }@inputs':
+        let
           naersk-lib = pkgs.callPackage inputs.naersk { };
-		in {
+        in
+        {
           _module.args.pkgs = import inputs.nixpkgs {
             inherit (inputs') system;
             overlays = [ ];
           };
           # https://numtide.github.io/devshell/intro.html
           devshells.default = {
-				env = [{
-					name = "RUST_SRC_PATH";
-					value = pkgs.rustPlatform.rustLibSrc;
-				}];
             # These commands will be shown in the motd that users read
             # upon entering the shell
-				commands = [{
+            commands = [
+              {
                 package = pkgs.cargo;
-					category = "languages";
+                category = "tools";
-					help = "The Cargo tool";
+                help = "Rust build and package tool";
-				} {
+              }
+              {
                 package = pkgs.rustc;
                 category = "languages";
-					help = "The rust compiler";
+                help = "Rust compiler";
-				} {
+              }
+              {
                 package = pkgs.rustfmt;
                 category = "tools";
-					help = "Formatting tool for Rust";
+                help = "Standard Rust formatting tool";
-				} {
+              }
-					package = pkgs.pre-commit;
+              {
+                package = pkgs.clippy;
                 category = "tools";
-					help = "Helps run certain checks";
+                help = "Rust linter";
-				} {
+              }
-					package = pkgs.rustPackages.clippy;
+              {
-					category = "tools";
-					help = "Standard Rust clippy tool";
-				} {
                 package = pkgs.stdenv.cc;
                 category = "languages";
-					help = "The C compiler, to help things out";
+                help = "C compiler to help with building native code";
-				}];
+              }
+              {
+                package = pkgs.pre-commit;
+                category = "tools";
+                help = "Tool to help enforce commits make sense";
+              }
+            ];
+          };
+
+          checks = {
+            pre-commit-check = inputs.hooks.lib.${inputs'.system}.run {
+              src = ./.;
+              hooks = {
+                check-added-large-files.enable = true;
+                check-case-conflicts.enable = true;
+                check-merge-conflicts.enable = true;
+                check-symlinks.enable = true;
+                deadnix.enable = true;
+                end-of-file-fixer.enable = true;
+                fix-byte-order-marker.enable = true;
+                mixed-line-endings.enable = true;
+                nixfmt-rfc-style.enable = true;
+                trim-trailing-whitespace.enable = true;
+                # Rust hooks
+                cargo-check.enable = true;
+                clippy.enable = true;
+                rustfmt.enable = true;
+              };
+            };
           };
 
           # This is not special, this is just flakes
           packages = {
-				default = naersk-lib.buildPackage ./.;
+            rustpkg = naersk-lib.buildPackage ./.;
           };
         };
     };

src/lib.rs

@@ -8,13 +8,12 @@ pub enum CellValue {
     Six,
     Seven,
     Eight,
-    Nine
+    Nine,
 }
 
 pub struct Cell {
     value: Option<CellValue>,
     candidates: Vec<CellValue>,
-
 }
 
 impl Default for Cell {
@@ -30,15 +29,15 @@ impl Default for Cell {
                 CellValue::Six,
                 CellValue::Seven,
                 CellValue::Eight,
-                CellValue::Nine
+                CellValue::Nine,
-            ]
+            ],
         }
     }
 }
 
 #[derive(Default)]
 pub struct Board {
-    cells: [ [ Cell ; 9 ] ; 9 ]
+    cells: [[Cell; 9]; 9],
 }
 
 impl Board {