Use ergogen and keymap-drawer from nixpkgs now that they are packaged

draw/default.nix

@@ -1,47 +0,0 @@
-{
-  lib,
-  buildPythonApplication,
-  callPackage,
-  fetchFromGitHub,
-  poetry-core,
-  pydantic,
-  pcpp,
-  pyyaml,
-  platformdirs,
-  pydantic-settings,
-  tree-sitter,
-}: let
-  tree-sitter-devicetree = callPackage ./tree-sitter-devicetree.nix {};
-in
-  buildPythonApplication rec {
-    pname = "keymap-drawer";
-    version = "0.20.0";
-    pyproject = true;
-
-    src = fetchFromGitHub {
-      owner = "caksoylar";
-      repo = pname;
-      rev = "ea00f44ac5a2ebe97b8b31f9166791bedf9136e5";
-      hash = "sha256-F9lDUuqHKl2FOUsUszJrRK7/a/a1UJLw+RUg9Bv2zN0=";
-    };
-
-    build-system = [poetry-core];
-
-    propagatedBuildInputs = [
-      pydantic
-      pcpp
-      pyyaml
-      platformdirs
-      pydantic-settings
-      tree-sitter
-      tree-sitter-devicetree
-    ];
-
-    doCheck = false;
-
-    meta = {
-      homepage = "https://github.com/caksoylar/keymap-drawer";
-      description = "Parse QMK & ZMK keymaps and draw them as vector graphics";
-      license = lib.licenses.mit;
-    };
-  }

draw/tree-sitter-devicetree.nix

@@ -1,39 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  setuptools,
-  tree-sitter,
-}:
-buildPythonPackage {
-  pname = "tree-sitter-devicetree";
-  version = "0.12.1";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "joelspadin";
-    repo = "tree-sitter-devicetree";
-    rev = "16c9cb959675bc9bc4f4e5bebe473d511a12a06d";
-    hash = "sha256-UVxLF4IKRXexz+PbSlypS/1QsWXkS/iYVbgmFCgjvZM=";
-  };
-
-  build-system = [
-    setuptools
-  ];
-
-  optional-dependencies = {
-    core = [
-      tree-sitter
-    ];
-  };
-
-  # There are no tests
-  doCheck = false;
-  pythonImportsCheck = ["tree_sitter_devicetree"];
-
-  meta = {
-    description = "Devicetree grammar for tree-sitter";
-    homepage = "https://github.com/joelspadin/tree-sitter-devicetree";
-    license = lib.licenses.mit;
-  };
-}

shell.nix

@@ -1,12 +1,9 @@
-{pkgs ? import <nixpkgs> {}}: let
+{pkgs ? import <nixpkgs> {}}:
-  keymap-drawer =
-    pkgs.python3Packages.callPackage ./draw {};
-in
 pkgs.mkShell {
   packages = with pkgs; [
     kicad
-      nodejs
     freecad
+    ergogen
     # keymap-drawer
   ];