diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..979c745
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.vscode/launch.json
+**/.DS_Store
+.zed/
+**/.venv/
\ No newline at end of file
diff --git a/slides/flake.lock b/slides/flake.lock
new file mode 100644
index 0000000..10c64f8
--- /dev/null
+++ b/slides/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1753749649,
+        "narHash": "sha256-+jkEZxs7bfOKfBIk430K+tK9IvXlwzqQQnppC2ZKFj4=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "1f08a4df998e21f4e8be8fb6fbf61d11a1a5076a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/slides/flake.nix b/slides/flake.nix
index 2867f0a..562c6c2 100644
--- a/slides/flake.nix
+++ b/slides/flake.nix
@@ -1,24 +1,3 @@
-# { ... }:
-
-# let
-#   pkgs =
-#     import
-#       (fetchTarball "https://github.com/NixOS/nixpkgs/archive/10e687235226880ed5e9f33f1ffa71fe60f2638a.tar.gz")
-#       { };
-# in
-# pkgs.mkShell {
-#   packages = [
-#     (with pkgs; [
-#       locale
-#     ])
-#     (pkgs.python312Full.withPackages (
-#       python-pkgs: with python-pkgs; [
-#         pip
-#       ]
-#     ))
-#   ];
-# }
-
 {
   description = "Python environment";
 
@@ -29,6 +8,7 @@
 
   outputs =
     {
+      self,
       nixpkgs,
       flake-utils,
     }:
@@ -50,6 +30,14 @@
               ]
             ))
           ];
+          shellHook = ''
+              export PS1='[python][\u@\h:\w]\$ '
+              python -m venv .venv
+              source .venv/bin/activate
+              pip install mkslides --upgrade
+              deactivate
+              alias mkslides='.venv/bin/mkslides'
+          '';
         };
       }
     );