Add nix devshell

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1733120037,
+        "narHash": "sha256-En+gSoVJ3iQKPDU1FHrR6zIxSLXKjzKY+pnh9tt+Yts=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "f9f0d5c5380be0a599b1fb54641fa99af8281539",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,27 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+    in
+    {
+      devShells.${system}.qtcreator =
+        pkgs.mkShell.override
+          {
+            stdenv = pkgs.clangStdenv;
+          }
+          {
+            packages = with pkgs; [
+              gdb
+              clang-tools
+              qt6.full
+              qtcreator
+            ];
+          };
+
+      formatter.${system} = pkgs.nixfmt-rfc-style;
+    };
+}