update

flake.lock

@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "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"
@@ -18,6 +34,49 @@
         "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"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749636823,
+        "narHash": "sha256-WUaIlOlPLyPgz9be7fqWJA5iG6rHcGRtLERSCfUDne4=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "623c56286de5a3193aa38891a6991b28f9bab056",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1749285348,
@@ -52,7 +111,29 @@
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
-        "nixpkgs": "nixpkgs"
+        "hooks": "hooks",
+        "nixpkgs": "nixpkgs",
+        "treefmt": "treefmt"
+      }
+    },
+    "treefmt": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749194973,
+        "narHash": "sha256-eEy8cuS0mZ2j/r/FE0/LYBSBcIs/MKOIVakwHVuqTfk=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "a05be418a1af1198ca0f63facb13c985db4cb3c5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -4,25 +4,59 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    treefmt = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = {
-    self,
-    nixpkgs,
-    flake-parts,
-  } @ inputs:
-    flake-parts.lib.mkFlake {inherit inputs;} {
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-parts,
+      hooks,
+      treefmt,
+    }@inputs:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [
+        hooks.flakeModule
+        treefmt.flakeModule
+      ];
+
       systems = nixpkgs.lib.systems.flakeExposed;
 
-      perSystem = {lib, pkgs, ...}: {
-        packages = let
-          packages = lib.packagesFromDirectoryRecursive {
-            inherit (pkgs) callPackage;
-            directory = ./packages;
+      perSystem =
+        {
+          config,
+          pkgs,
+          ...
+        }:
+        {
+          treefmt = {
+            projectRootFile = "flake.nix";
+
+            programs.nixfmt = {
+              enable = true;
+              package = pkgs.nixfmt-rfc-style;
+            };
           };
-        in packages // {
-          default = packages.helix;
+
+          pre-commit.settings.hooks = {
+            treefmt.enable = true;
+          };
+
+          devShells.default = pkgs.mkShellNoCC {
+            shellHook = ''
+              ${config.pre-commit.installationScript}
+            '';
+          };
+
+          packages.default = pkgs.callPackage ./package.nix { };
         };
-      };
     };
 }

package.nix

@@ -3,7 +3,8 @@
   symlinkJoin,
   makeWrapper,
   pkgs,
-}: let
+}:
+let
   languageServers = [
     # C & C++
     pkgs.clang-tools
@@ -60,17 +61,20 @@
     pkgs.wl-clipboard
   ];
 in
-  symlinkJoin {
-    inherit (helix) pname version meta passthru;
+symlinkJoin {
+  inherit (helix)
+    pname
+    version
+    meta
+    passthru
+    ;
 
-    paths = [helix];
+  paths = [ helix ];
 
-    buildInputs = [makeWrapper];
+  buildInputs = [ makeWrapper ];
 
-    postBuild = ''
-      wrapProgram $out/bin/${helix.meta.mainProgram} \
-        --suffix PATH : ${pkgs.lib.makeBinPath (
-        languageServers ++ debugAdapters ++ clipboardProviders
-      )}
-    '';
-  }
+  postBuild = ''
+    wrapProgram $out/bin/${helix.meta.mainProgram} \
+      --suffix PATH : ${pkgs.lib.makeBinPath (languageServers ++ debugAdapters ++ clipboardProviders)}
+  '';
+}