Add treefmt configuration

checks/default.nix

@@ -1,14 +1,15 @@
 {
   self,
+  flakeSelf,
   system,
   pkgs,
   deployPkgs,
+  treefmtEval,
   ...
 }@inputs:
 {
   ${system} = {
-
-    # TODO: Check project formatting
+    formatting = treefmtEval.config.build.check flakeSelf;
 
     nixos-modules = pkgs.callPackage ./nixos-modules {
       inherit (self.lib) getSubDirs isFolderWithFile;

flake.lock

@@ -56,18 +56,77 @@
         "type": "github"
       }
     },
+    "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"
+      }
+    },
+    "git-hooks-nix": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1742649964,
+        "narHash": "sha256-DwOTp7nvfi8mRfuL1escHDXabVXFGT1VlPD1JHrtrco=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "dcf5072734cb576d2b0c59b2ac44f5050b5eac82",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks-nix",
+          "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": 1702272962,
-        "narHash": "sha256-D+zHwkwPc6oYQ4G3A1HuadopqRwUY/JkMwHz1YF7j4Q=",
+        "lastModified": 1742669843,
+        "narHash": "sha256-G5n+FOXLXcRx+3hCJ6Rt6ZQyF1zqQ0DL0sWAMn2Nk0w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e97b3e4186bcadf0ef1b6be22b8558eab1cdeb5d",
+        "rev": "1e5b653dff12029333a6546c11e108ede13052eb",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -88,7 +147,7 @@
         "type": "github"
       }
     },
-    "nixpkgs-nixos-unstable": {
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1742669843,
         "narHash": "sha256-G5n+FOXLXcRx+3hCJ6Rt6ZQyF1zqQ0DL0sWAMn2Nk0w=",
@@ -106,16 +165,16 @@
     },
     "private": {
       "inputs": {
-        "nixpkgs-nixos-unstable": [
-          "nixpkgs-nixos-unstable"
+        "nixpkgs": [
+          "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1742849713,
-        "narHash": "sha256-EH3vvMdalGxxvYt3tZI4K4RKT/YAh7XejYYrf/jZ0N8=",
+        "lastModified": 1742903609,
+        "narHash": "sha256-/RY0aP9QJROQqyaTX2qUy04YQD22l8cTbKqYo3aFzpg=",
         "ref": "refs/heads/main",
-        "rev": "f79080b8802eec4463bb4a25c64f82f73e6e31db",
-        "revCount": 12,
+        "rev": "9e9c48a02ca9ce6514d609c0f4f0607fa7fa8165",
+        "revCount": 13,
         "type": "git",
         "url": "file:./private"
       },
@@ -128,16 +187,18 @@
       "inputs": {
         "deploy-rs": "deploy-rs",
         "disko": "disko",
+        "git-hooks-nix": "git-hooks-nix",
+        "nixpkgs": "nixpkgs_2",
         "nixpkgs-nixos-stable": "nixpkgs-nixos-stable",
-        "nixpkgs-nixos-unstable": "nixpkgs-nixos-unstable",
         "private": "private",
-        "sops-nix": "sops-nix"
+        "sops-nix": "sops-nix",
+        "treefmt-nix": "treefmt-nix"
       }
     },
     "sops-nix": {
       "inputs": {
         "nixpkgs": [
-          "nixpkgs-nixos-unstable"
+          "nixpkgs"
         ]
       },
       "locked": {
@@ -169,6 +230,26 @@
         "type": "github"
       }
     },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1742370146,
+        "narHash": "sha256-XRE8hL4vKIQyVMDXykFh4ceo3KSpuJF3ts8GKwh5bIU=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "adc195eef5da3606891cedf80c0d9ce2d3190808",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    },
     "utils": {
       "inputs": {
         "systems": "systems"

flake.nix

@@ -5,35 +5,44 @@
     extra-trusted-public-keys = "qois-infrastructure:lh35ymN7Aoxm5Hz0S6JusxE+cYzMU+x9OMKjDVIpfuE=";
   };
   inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-nixos-stable.url = "github:NixOS/nixpkgs/nixos-24.11";
+
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    git-hooks-nix = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    sops-nix = {
+      url = "github:Mic92/sops-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     deploy-rs.url = "github:serokell/deploy-rs";
     disko = {
       url = "github:nix-community/disko";
       inputs.nixpkgs.follows = "nixpkgs-nixos-stable";
     };
-    nixpkgs-nixos-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
-    nixpkgs-nixos-stable.url = "github:NixOS/nixpkgs/nixos-24.11";
-    sops-nix = {
-      url = "github:Mic92/sops-nix";
-      inputs = {
-        nixpkgs.follows = "nixpkgs-nixos-unstable";
-      };
-    };
     private.url = "git+file:./private";
-    private.inputs.nixpkgs-nixos-unstable.follows = "nixpkgs-nixos-unstable";
+    private.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs =
     {
       self,
-      nixpkgs-nixos-unstable,
+      nixpkgs,
       deploy-rs,
+      treefmt-nix,
       ...
     }@inputs:
     let
       system = "x86_64-linux";
       # Packages for development and build process
-      pkgs = import nixpkgs-nixos-unstable { inherit system; };
-      deployPkgs = import nixpkgs-nixos-unstable {
+      pkgs = import nixpkgs { inherit system; };
+      deployPkgs = import nixpkgs {
         inherit system;
         overlays = [
           deploy-rs.overlay
@@ -45,6 +54,7 @@
           })
         ];
       };
+      treefmtEval = treefmt-nix.lib.evalModule pkgs ./treefmt.nix;
       importParams = {
         inherit (inputs)
           deploy-rs
@@ -53,7 +63,12 @@
           sops-nix
           private
           ;
-        inherit pkgs deployPkgs system;
+        inherit
+          deployPkgs
+          pkgs
+          system
+          treefmtEval
+          ;
         flakeSelf = self;
       };
     in
@@ -93,7 +108,7 @@
           };
         }
       );
-      formatter.${system} = pkgs.nixfmt-tree;
+      formatter.${system} = treefmtEval.config.build.wrapper;
       nixosConfigurations = import ./nixos-configurations/default.nix (
         importParams
         // {

private

@@ -1 +1 @@
-Subproject commit f79080b8802eec4463bb4a25c64f82f73e6e31db
+Subproject commit 9e9c48a02ca9ce6514d609c0f4f0607fa7fa8165

treefmt.nix

@@ -0,0 +1,30 @@
+{ ... }:
+{
+  projectRootFile = "flake.nix";
+  programs = {
+    nixfmt.enable = true;
+    deadnix.enable = true;
+    jsonfmt.enable = true;
+    yamlfmt.enable = true;
+    mdformat.enable = true;
+    ruff-check.enable = true;
+    ruff-format.enable = true;
+    shfmt.enable = true;
+  };
+  settings = {
+    global.excludes =
+      [
+        "*.jpg"
+        "*.pdf"
+        "*.toml"
+      ]
+      ++ [
+        ".envrc"
+        "robots.txt"
+        ".vscode/*"
+        "nixos-modules/system/etc/*"
+        "private/*"
+      ];
+    formatter.jsonfmt.excludes = [ ".vscode/*.json" ];
+  };
+}