From b917a895f016734a69c0c3901fc94f7ddd8ed1fd Mon Sep 17 00:00:00 2001
From: Roman Lubij <roman.lubij@gmail.com>
Date: Fri, 27 Mar 2026 18:58:06 +0100
Subject: [PATCH] Add justfile Update lock Add treefmt

---
 Justfile       | 21 +++++++++++++++++++++
 cpp/flake.lock |  6 +++---
 cpp/flake.nix  | 48 ++++++++++++++++++++++++------------------------
 treefmt.toml   |  3 +++
 4 files changed, 51 insertions(+), 27 deletions(-)
 create mode 100644 Justfile
 create mode 100644 treefmt.toml

diff --git a/Justfile b/Justfile
new file mode 100644
index 0000000..59a8002
--- /dev/null
+++ b/Justfile
@@ -0,0 +1,21 @@
+update:
+    #!/usr/bin/env bash
+    echo "Starting update scan..."
+    for dir in */; do
+        dirname=${dir%/}
+        if [ -f "$dir/flake.nix" ]; then
+            echo "-------------------------------------------"
+            echo "Updating flake in: $dirname"
+            (cd "$dir" && nix flake update)
+        else
+            echo "Skipping $dirname (no flake.nix found)"
+        fi
+    done
+    echo "-------------------------------------------"
+    echo "Update complete."
+
+update-lang lang:
+    cd {{lang}} && nix flake update
+
+format:
+    treefmt .
\ No newline at end of file
diff --git a/cpp/flake.lock b/cpp/flake.lock
index 5b7bff5..d9d86bb 100644
--- a/cpp/flake.lock
+++ b/cpp/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1771932323,
-        "narHash": "sha256-3PadsTzuMJT/x0KmiD/Me1GG6rW8kaHoWVduSs0ue7o=",
+        "lastModified": 1774612448,
+        "narHash": "sha256-+uVDNwxihd82I6aZTgNvIXqFyLcfUBkg/Y0A8UBgycg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "89bb5c5da7a857869cc88ef9b856bffdff8af264",
+        "rev": "b55b0e0c856ac73c7f507336780f97aa7a9746e2",
         "type": "github"
       },
       "original": {
diff --git a/cpp/flake.nix b/cpp/flake.nix
index 1bd81bc..21c3af9 100644
--- a/cpp/flake.nix
+++ b/cpp/flake.nix
@@ -2,30 +2,30 @@
   description = "Central C++ Dev Shell";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small";
 
-  outputs =
-    { self, nixpkgs }:
-    let
-      system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
-    in
-    {
-      devShells.${system}.default = pkgs.mkShell {
-        nativeBuildInputs = with pkgs; [
-          gcc
-          cmake
-          ninja
-          gdb
-          pkg-config
-          valgrind
-          bind
-          perf
-        ];
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+  in {
+    devShells.${system}.default = pkgs.mkShell {
+      nativeBuildInputs = with pkgs; [
+        gcc
+        cmake
+        ninja
+        gdb
+        pkg-config
+        valgrind
+        bind
+        perf
+      ];
 
-        buildInputs = with pkgs; [
-        ];
-        shellHook = ''
-          export LD_LIBRARY_PATH=$LD_LIBRARY_PATH
-        '';
-      };
+      buildInputs = with pkgs; [
+      ];
+      shellHook = ''
+        export LD_LIBRARY_PATH=$LD_LIBRARY_PATH
+      '';
     };
+  };
 }
diff --git a/treefmt.toml b/treefmt.toml
new file mode 100644
index 0000000..f267269
--- /dev/null
+++ b/treefmt.toml
@@ -0,0 +1,3 @@
+[formatter.alejandra]
+command = "alejandra"
+includes = ["*.nix"]