[M6] Phase 2 self-hosting: cargoxx builds itself from Cargoxx.toml

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "cargoxx — Cargo-style frontend for modern C++";
+  description = "cargoxx";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -11,21 +11,22 @@
       let
         pkgs = import nixpkgs { inherit system; };
       in {
-        devShells.default = pkgs.gcc15Stdenv.mkDerivation {
-          name = "cargoxx-dev";
-          version = "0.1.0";
+        devShell = pkgs.gcc15Stdenv.mkDerivation {
+          name = "shell";
+          version = "1.0";
           nativeBuildInputs = [
-            pkgs.cmake
             pkgs.ninja
-            pkgs.git
+            pkgs.cmake
             pkgs.pkg-config
           ];
           buildInputs = [
-            pkgs.sqlite
             pkgs.reproc
+            pkgs.sqlite
             pkgs.catch2_3
           ];
-          hardeningDisable = [ "all" ];
+          hardeningDisable = [
+            "all"
+          ];
         };
       });
 }