diff --git a/.cargo/config.toml b/.cargo/config.toml
index 96c291a..bd321a2 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,6 +1,14 @@
 [target.x86_64-unknown-linux-gnu]
-# linker = "clang"
-# rustflags = [
-#   "-C", "link-arg=-fuse-ld=mold",
-# ]
+linker = "clang"
+rustflags = [
+  "-C", "link-arg=-fuse-ld=mold",
+  # (Nightly) Make the current crate share its generic instantiations
+  "-Zshare-generics=y",
+]
+
+[unstable]
+codegen-backend = true
+
+[profile."*"]
+codegen-backend = "llvm"
 
diff --git a/flake.lock b/flake.lock
index b536772..e6021d4 100644
--- a/flake.lock
+++ b/flake.lock
@@ -8,11 +8,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1732257345,
-        "narHash": "sha256-YetzCpGzm7RnSHIUhSqljv3iLOGdg/XufbUvMOrC7tg=",
+        "lastModified": 1742452566,
+        "narHash": "sha256-sVuLDQ2UIWfXUBbctzrZrXM2X05YjX08K7XHMztt36E=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "3b89d5df39afc6ef3a8575fa92d8fa10ec68c95f",
+        "rev": "7d9ba794daf5e8cc7ee728859bc688d8e26d5f06",
         "type": "github"
       },
       "original": {
@@ -41,11 +41,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1731890469,
-        "narHash": "sha256-D1FNZ70NmQEwNxpSSdTXCSklBH1z2isPR84J6DQrJGs=",
+        "lastModified": 1743568003,
+        "narHash": "sha256-ZID5T65E8ruHqWRcdvZLsczWDOAWIE7om+vQOREwiX0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5083ec887760adfe12af64830a66807423a859a7",
+        "rev": "b7ba7f9f45c5cd0d8625e9e217c28f8eb6a19a76",
         "type": "github"
       },
       "original": {
@@ -65,11 +65,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1732050317,
-        "narHash": "sha256-G5LUEOC4kvB/Xbkglv0Noi04HnCfryur7dVjzlHkgpI=",
+        "lastModified": 1742296961,
+        "narHash": "sha256-gCpvEQOrugHWLimD1wTFOJHagnSEP6VYBDspq96Idu0=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "c0bbbb3e5d7d1d1d60308c8270bfd5b250032bb4",
+        "rev": "15d87419f1a123d8f888d608129c3ce3ff8f13d4",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 42c75c7..48a06e0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,11 +22,13 @@
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = nixpkgs.legacyPackages.${system};
 
-      rs-toolchain = with fenix.packages.${system}; combine [
-        stable.toolchain
-        targets.wasm32-unknown-unknown.stable.rust-src
-        targets.x86_64-pc-windows-gnu.stable.rust-src
-      ];
+      rs-toolchain = with fenix.packages.${system};
+        combine [
+          complete.toolchain
+          # stable.toolchain
+          # targets.wasm32-unknown-unknown.stable.rust-src
+          # targets.x86_64-pc-windows-gnu.stable.rust-src
+        ];
     in {
       devShells.default = pkgs.mkShell rec {
         buildInputs = with pkgs; [
diff --git a/src/game/scene.rs b/src/game/scene.rs
index 559f781..4170080 100644
--- a/src/game/scene.rs
+++ b/src/game/scene.rs
@@ -165,7 +165,7 @@ pub(super) fn import_text_world(
                             (collider, fixed),
                         );
                     }
-                    println!("spawned {possible_block:?} at {x}, {y}");
+                    // println!("spawned {possible_block:?} at {x}, {y}");
 
                     i += len;
                     continue 'a;