diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/LispBM cheatsheet.pdf b/LispBM cheatsheet.pdf
new file mode 100644
index 0000000..79c58b0
Binary files /dev/null and b/LispBM cheatsheet.pdf differ
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..edd5c3b
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,146 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1759362264,
+        "narHash": "sha256-wfG0S7pltlYyZTM+qqlhJ7GMw2fTF4mLKCIVhLii/4M=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "758cf7296bee11f1706a574c77d072b8a7baa881",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "lispbm": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nix-filter": "nix-filter",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1760289916,
+        "narHash": "sha256-AtvVSTzhAyzAiycRWYE8pF9wrSx0w/B8i/TcQiD1vTU=",
+        "owner": "svenssonjoel",
+        "repo": "lispbm",
+        "rev": "5237bc1de9443765fa4f917c6d09746ac14761dc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "svenssonjoel",
+        "repo": "lispbm",
+        "type": "github"
+      }
+    },
+    "nix-filter": {
+      "locked": {
+        "lastModified": 1710156097,
+        "narHash": "sha256-1Wvk8UP7PXdf8bCCaEoMnOT1qe5/Duqgj+rL8sRQsSM=",
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "rev": "3342559a24e85fc164b295c3444e8a139924675b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1735563628,
+        "narHash": "sha256-OnSAY7XDSx7CtDoqNh8jwVwh4xNL/2HaJxGjryLWzX8=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b134951a4c9f3c995fd7be05f3243f8ecd65d798",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1754788789,
+        "narHash": "sha256-x2rJ+Ovzq0sCMpgfgGaaqgBSwY+LST+WbZ6TytnT9Rk=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "a73b9c743612e4244d865a2fdee11865283c04e6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1760038930,
+        "narHash": "sha256-Oncbh0UmHjSlxO7ErQDM3KM0A5/Znfofj2BSzlHLeVw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "0b4defa2584313f3b781240b29d61f6f9f7e0df3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "lispbm": "lispbm",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "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/flake.nix b/flake.nix
new file mode 100644
index 0000000..d1453c3
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,49 @@
+{
+  description = "Tataruuuuuuuu";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    lispbm.url = "github:svenssonjoel/lispbm";
+  };
+
+  outputs = inputs@{ nixpkgs, flake-parts, lispbm, ... }:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = [
+        "x86_64-linux"
+      ];
+
+      perSystem = {self', pkgs, system, ...}: {
+        _module.args.pkgs = import inputs.nixpkgs {
+          inherit system;
+          overlays = [
+            lispbm.overlays.default
+            # # Above doesn't work due to segfault
+            (final: prev: {
+              lispbm-repl = lispbm.outputs.packages.${system}.repl;
+              lispbm-repl64 = lispbm.outputs.packages.${system}.repl64;
+              lispbm-c-doc = lispbm.outputs.packages.${system}.c-doc;
+              lispbm-doc = lispbm.outputs.packages.${system}.doc;
+            })
+          ];
+        };
+
+        # packages.default = self'.packages.tataru;
+        # packages.tataru = pkgs.stdenv.mkDerivation {
+        #   pname = "Tataru";
+        #   version = "0.0.1";
+
+        #   src = ./.;
+
+        #   nativeBuildInputs = with pkgs; [ ];
+        #   buildInputs = [ ];
+
+        # };
+
+        devShells.default = pkgs.mkShell {
+          packages = with pkgs; [ lispbm-repl ];
+        };
+
+      };
+    };
+}
diff --git a/test.lispbm b/test.lispbm
new file mode 100644
index 0000000..607e397
--- /dev/null
+++ b/test.lispbm
@@ -0,0 +1,10 @@
+(defun fac (x)
+  (match x
+    (0 1)
+    (1 1)
+    (_ (* x (fac (- x 1))))))
+
+(defun mymap (f m)
+  (if (eq m nil)
+      nil
+      (cons (f (car m)) (mymap m f))))