diff --git a/cmake/modules/envtoh.cmake b/cmake/modules/envtoh.cmake
deleted file mode 100644
index d6b0d86..0000000
--- a/cmake/modules/envtoh.cmake
+++ /dev/null
@@ -1,69 +0,0 @@
-# Copyright (c) 2026 Dominic Masters
-# 
-# This software is released under the MIT License.
-# https://opensource.org/licenses/MIT
-
-if(NOT DEFINED ENV_FILE)
-    message(FATAL_ERROR "ENV_FILE is not set")
-endif()
-
-if(NOT DEFINED OUT_HEADER)
-    message(FATAL_ERROR "OUT_HEADER is not set")
-endif()
-
-if(NOT EXISTS "${ENV_FILE}")
-    message(FATAL_ERROR ".env file not found: ${ENV_FILE}")
-endif()
-
-file(STRINGS "${ENV_FILE}" ENV_LINES)
-
-set(HEADER_CONTENT "#pragma once\n#include \"dusk.h\"\n\n")
-
-foreach(line IN LISTS ENV_LINES)
-  # Skip comments and empty lines (allow whitespace before # or ;)
-  if(line STREQUAL "" OR line MATCHES "^[ \t]*[#;]")
-    continue()
-  endif()
-
-  # Expect KEY=VALUE (allow spaces around '=')
-  if(NOT line MATCHES "^[A-Za-z_][A-Za-z0-9_]*[ \t]*=[ \t]*")
-    message(WARNING "Skipping invalid line in ${ENV_FILE}: '${line}'")
-    continue()
-  endif()
-
-  # Extract key
-  string(REGEX MATCH "^[A-Za-z_][A-Za-z0-9_]*" KEY "${line}")
-  string(LENGTH "${KEY}" key_len)
-
-  # Extract value (allow spaces around '=')
-  string(REGEX REPLACE "^[A-Za-z_][A-Za-z0-9_]*[ \t]*=[ \t]*" "" RAW_VALUE "${line}")
-
-  # Lowercase copy for boolean detection
-  string(TOLOWER "${RAW_VALUE}" VALUE_LC)
-  set(VALUE "${RAW_VALUE}")
-
-  # Determine type and format accordingly
-  if(VALUE_LC STREQUAL "true")
-    set(HEADER_CONTENT "${HEADER_CONTENT}#define ${KEY} true\n")
-
-  elseif(VALUE_LC STREQUAL "false")
-    set(HEADER_CONTENT "${HEADER_CONTENT}#define ${KEY} false\n")
-
-  elseif(VALUE MATCHES "^[+-]?[0-9]+$")
-    # Integer
-    set(HEADER_CONTENT "${HEADER_CONTENT}#define ${KEY} ${VALUE}\n")
-
-  elseif(VALUE MATCHES "^[+-]?[0-9]*\\.[0-9]+$")
-    # Float → append "f"
-    set(HEADER_CONTENT "${HEADER_CONTENT}#define ${KEY} ${VALUE}f\n")
-
-  else()
-    # String → escape for C literal
-    string(REPLACE "\\" "\\\\" VALUE_ESC "${VALUE}")
-    string(REPLACE "\"" "\\\"" VALUE_ESC "${VALUE_ESC}")
-    set(HEADER_CONTENT "${HEADER_CONTENT}#define ${KEY} \"${VALUE_ESC}\"\n")
-  endif()
-endforeach()
-
-file(WRITE "${OUT_HEADER}" "${HEADER_CONTENT}")
-message(STATUS "Generated header: ${OUT_HEADER}")
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 7986058..828a4ed 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -16,18 +16,12 @@ function(add_asset ASSET_TYPE ASSET_PATH)
 endfunction()
 
 function(add_defs INPUT_PATH OUTPUT_NAME_RELATIVE)
-  set(INPUT_FULL_PATH "${CMAKE_CURRENT_LIST_DIR}/${INPUT_PATH}")
-  set(OUTPUT_FULL_PATH "${DUSK_GENERATED_HEADERS_DIR}/${OUTPUT_NAME_RELATIVE}")
-
-  add_custom_command(
-    OUTPUT ${OUTPUT_FULL_PATH}
-    COMMAND ${CMAKE_COMMAND}
-      -DENV_FILE=${INPUT_FULL_PATH}
-      -DOUT_HEADER=${OUTPUT_FULL_PATH}
-      -P ${CMAKE_SOURCE_DIR}/cmake/modules/envtoh.cmake
-    DEPENDS ${INPUT_FULL_PATH} ${CMAKE_SOURCE_DIR}/cmake/modules/envtoh.cmake
-    COMMENT "Generating ${OUTPUT_NAME_RELATIVE}"
+  set(DUSK_DEFS_TARGET_NAME "DUSK_DEFS_${OUTPUT_NAME_RELATIVE}")
+  dusk_run_python(
+    ${DUSK_DEFS_TARGET_NAME}
+    tools.envtoh
+      --env ${INPUT_PATH}
+      --output ${DUSK_BUILT_ASSETS_DIR}/${OUTPUT_NAME_RELATIVE}
   )
-  add_custom_target(${OUTPUT_NAME_RELATIVE}_header DEPENDS ${OUTPUT_FULL_PATH})
-  add_dependencies(${DUSK_LIBRARY_TARGET_NAME} ${OUTPUT_NAME_RELATIVE}_header)
+  add_dependencies(${DUSK_LIBRARY_TARGET_NAME} ${DUSK_DEFS_TARGET_NAME})
 endfunction()
\ No newline at end of file
diff --git a/tools/envtoh/__main__.py b/tools/envtoh/__main__.py
new file mode 100644
index 0000000..96c399d
--- /dev/null
+++ b/tools/envtoh/__main__.py
@@ -0,0 +1,46 @@
+import argparse
+import os
+from dotenv import load_dotenv, dotenv_values
+
+parser = argparse.ArgumentParser(description="Convert .env to .h defines")
+parser.add_argument("--env", required=True, help="Path to .env file")
+parser.add_argument("--output", required=True, help="Path to output .h file")
+args = parser.parse_args()
+
+# Load .env file
+load_dotenv(dotenv_path=args.env)
+fileDefs = dotenv_values(dotenv_path=args.env)
+
+
+outHeader = ""
+outHeader += "#include \"dusk.h\"\n\n"
+for key, value in fileDefs.items():
+  # Determine type and print out appropriate C type define.
+
+  # Float
+  try:
+    asFloat = float(value)
+    outHeader += f"#define {key} {asFloat}f\n"
+    continue
+  except:
+    pass
+
+  # Integer
+  try:
+    asInt = int(value)
+    outHeader += f"#define {key} {asInt}\n"
+  except:
+    pass
+
+  # Boolean
+  if value.lower() in ['true', 'false']:
+    asBool = '1' if value.lower() == 'true' else '0'
+    outHeader += f"#define {key} {asBool}\n"
+    continue
+
+  # String
+  outHeader += f'#define {key} "{value}"\n'
+
+# Write to output file
+with open(args.output, 'w') as outFile:
+  outFile.write(outHeader)
\ No newline at end of file