diff --git a/arm7tdmi/src/arm/exec.rs b/arm7tdmi/src/arm/exec.rs
index 417955d..ef3984d 100644
--- a/arm7tdmi/src/arm/exec.rs
+++ b/arm7tdmi/src/arm/exec.rs
@@ -1,5 +1,3 @@
-use bit::BitIndex;
-
 use crate::{
     alu::*,
     memory::{MemoryAccess, MemoryInterface},
diff --git a/flake.lock b/flake.lock
index 3ca045c..ac72795 100644
--- a/flake.lock
+++ b/flake.lock
@@ -21,55 +21,6 @@
         "type": "github"
       }
     },
-    "flake-utils": {
-      "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixgl": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
-      },
-      "locked": {
-        "lastModified": 1685908677,
-        "narHash": "sha256-E4zUPEUFyVWjVm45zICaHRpfGepfkE9Z2OECV9HXfA4=",
-        "owner": "guibou",
-        "repo": "nixGL",
-        "rev": "489d6b095ab9d289fe11af0219a9ff00fe87c7c5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "guibou",
-        "repo": "nixGL",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1660551188,
-        "narHash": "sha256-a1LARMMYQ8DPx1BgoI/UN4bXe12hhZkCNqdxNi6uS0g=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "441dc5d512153039f19ef198e662e4f3dbb9fd65",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1710272261,
@@ -89,7 +40,6 @@
     "root": {
       "inputs": {
         "fenix": "fenix",
-        "nixgl": "nixgl",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "utils": "utils"
       }
diff --git a/flake.nix b/flake.nix
index 64b984e..4de1b74 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,7 +15,6 @@
     nixpkgs-unstable,
     utils,
     fenix,
-    nixgl,
     ...
   }:
     utils.lib.eachDefaultSystem
@@ -23,7 +22,7 @@
       system: let
         pkgs = import nixpkgs-unstable {
           inherit system;
-          overlays = [fenix.overlays.default nixgl.overlay];
+          overlays = [fenix.overlays.default];
         };
         toolchain = pkgs.fenix.complete;
       in rec