nix-direnv has flake support \o/

configurations/direnv.nix

@@ -5,27 +5,16 @@
     { path = ".local/share/direnv"; type = "cache"; }
   ];
 
+  nix.extraOptions = ''
+    keep-outputs = true
+    keep-derivations = true
+  '';
+
   home-manager.users.charlotte = { ... }: {
     programs.direnv = {
       enable = true;
       enableZshIntegration = true;
-      config = {
-        global = {
-          strict_env = true;
-        };
-      };
-      stdlib = ''
-        use_flake() {
-          watch_file flake.nix
-          watch_file flake.lock
-          local profile_dir="$(direnv_layout_dir)/flake-profile"
-          eval "$(nix print-dev-env --profile "''${profile_dir}")"
-          local stripped_pwd=''${PWD/\//}
-          local escaped_pwd=''${stripped_pwd//-/--}
-          local escaped_pwd=''${escaped_pwd//\//-}
-          ln -fs "''${profile_dir}" "/nix/var/nix/gcroots/per-user/$USER/''${escaped_pwd}"
-        }
-      '';
+      enableNixDirenvIntegration = true;
     };
   };
 }