diff --git a/.envrc b/.envrc
deleted file mode 100644
index c23bb91..0000000
--- a/.envrc
+++ /dev/null
@@ -1,7 +0,0 @@
-use_flake() {
-  watch_file flake.nix
-  watch_file flake.lock
-  eval "$(nix print-dev-env)"
-}
-
-use flake
diff --git a/2019/d13/ex1/ex1.py b/2019/d13/ex1/ex1.py
index 1bf7e8c..52198a1 100755
--- a/2019/d13/ex1/ex1.py
+++ b/2019/d13/ex1/ex1.py
@@ -3,7 +3,7 @@
 import sys
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Dict, Iterable, List, NamedTuple, Tuple, TypeVar
+from typing import Dict, List, NamedTuple, Iterable, Tuple, TypeVar
 
 
 class ParameterMode(IntEnum):
diff --git a/2019/d13/ex2/ex2.py b/2019/d13/ex2/ex2.py
index 9fb669f..bee602b 100755
--- a/2019/d13/ex2/ex2.py
+++ b/2019/d13/ex2/ex2.py
@@ -3,7 +3,7 @@
 import sys
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import Dict, Iterable, List, NamedTuple, Tuple, TypeVar
+from typing import Dict, List, NamedTuple, Iterable, Tuple, TypeVar
 
 
 class ParameterMode(IntEnum):
diff --git a/flake.lock b/flake.lock
deleted file mode 100644
index b743e83..0000000
--- a/flake.lock
+++ /dev/null
@@ -1,69 +0,0 @@
-{
-  "nodes": {
-    "futils": {
-      "locked": {
-        "lastModified": 1638122382,
-        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "ref": "master",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1638286143,
-        "narHash": "sha256-A+rgjbIpz3uPRKHPXwdmouVcVn5pZqLnaZHymjkraG4=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "29d1f6e1f625d246dcf84a78ef97b4da3cafc6ea",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "pre-commit-hooks": {
-      "inputs": {
-        "flake-utils": [
-          "futils"
-        ],
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1637745948,
-        "narHash": "sha256-DmQG1bZk24eS+BAHwnHPyYIadMLKbq0d1b//iapYIPU=",
-        "owner": "cachix",
-        "repo": "pre-commit-hooks.nix",
-        "rev": "c3b4f94350b0e59c2546fa85890cc70d03616b9c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "cachix",
-        "ref": "master",
-        "repo": "pre-commit-hooks.nix",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "futils": "futils",
-        "nixpkgs": "nixpkgs",
-        "pre-commit-hooks": "pre-commit-hooks"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index 59cf9db..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,65 +0,0 @@
-{
-  description = "Advent of Code answers";
-
-  inputs = {
-    futils = {
-      type = "github";
-      owner = "numtide";
-      repo = "flake-utils";
-      ref = "master";
-    };
-
-    nixpkgs = {
-      type = "github";
-      owner = "NixOS";
-      repo = "nixpkgs";
-      ref = "nixos-unstable";
-    };
-
-    pre-commit-hooks = {
-      type = "github";
-      owner = "cachix";
-      repo = "pre-commit-hooks.nix";
-      ref = "master";
-      inputs = {
-        flake-utils.follows = "futils";
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-  };
-
-  outputs = { self, futils, nixpkgs, pre-commit-hooks }:
-    futils.lib.eachDefaultSystem (system:
-      let
-        pkgs = import nixpkgs { inherit system; };
-      in
-      {
-        checks = {
-          pre-commit = pre-commit-hooks.lib.${system}.run {
-            src = self;
-
-            hooks = {
-              black = {
-                enable = true;
-              };
-
-              isort = {
-                enable = true;
-              };
-
-              nixpkgs-fmt = {
-                enable = true;
-              };
-            };
-          };
-        };
-
-        devShell = pkgs.mkShell {
-          buildInputs = with pkgs; [
-            python310 # Latest version at the moment
-          ];
-
-          inherit (self.checks.${system}.pre-commit) shellHook;
-        };
-      });
-}