diff --git a/nix/build-all.py b/nix/build-all.py
index 1fbfab9349..ac1d789ebb 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -269,9 +269,11 @@ if platform.system() == "Darwin":
 
 IFCOS_NUM_BUILD_PROCS = os.getenv("IFCOS_NUM_BUILD_PROCS", multiprocessing.cpu_count() + 1)
 
-CMAKE_DIR = os.path.realpath(os.path.join(os.path.dirname(__file__), "..", "cmake"))
+SCRIPT_PATH = Path(__file__).parent
+REPO_PATH = SCRIPT_PATH.parent
+CMAKE_DIR = (REPO_PATH / "cmake").resolve().__str__()
 
-build_dir = os.environ.get("BUILD_DIR", os.path.join(os.path.dirname(__file__), "..", "build"))
+build_dir = os.environ.get("BUILD_DIR", (REPO_PATH / "build").__str__())
 
 
 if WASM:
@@ -716,7 +718,7 @@ def build_dependency(
         if isinstance(patch, str):
             patch = [patch]
         for p in patch:
-            patch_abs = os.path.abspath(os.path.join(os.path.dirname(__file__), p))
+            patch_abs = (SCRIPT_PATH / p).absolute().__str__()
             if os.path.exists(patch_abs):
                 try:
                     run(["patch", "-p1", "--batch", "--forward", "-i", patch_abs], cwd=extract_dir)
@@ -1504,15 +1506,8 @@ if "IfcOpenShell-Python" in targets:
             + get_cmake_args_prefix_path(prefix_paths)
             + [
                 *([f"-DPYTHON_EXECUTABLE={python_executable}"] if python_executable else []),
-                # *([f"-DPYTHON_MODULE_INSTALL_DIR={os.environ['PYTHONPATH']}/ifcopenshell"] if "wasm" in flags else []),
-                *(
-                    [
-                        "-DPYTHON_MODULE_INSTALL_DIR="
-                        + os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "package"))
-                    ]
-                    if "wasm" in flags
-                    else []
-                ),
+                # Needed because pyodide is expecting setup.py to be in the root.
+                *([f"-DPYTHON_MODULE_INSTALL_DIR={REPO_PATH}"] * WASM),
                 f"-DPYTHON_LIBRARY={python_library}",
                 f"-DPYTHON_INCLUDE_DIR={python_include}",
                 f"-DCMAKE_INSTALL_PREFIX={DEPS_DIR}/install/ifcopenshell/tmp",
@@ -1557,6 +1552,8 @@ if "IfcOpenShell-Python" in targets:
             os.environ["PYTHONINCLUDE"],
             None,
         )
+        # Copy setup.py where pyodide build system expects it.
+        shutil.copy(REPO_PATH / "pyodide" / "setup.py", REPO_PATH)
 
     elif USE_CURRENT_PYTHON_VERSION:
         python_info = sysconfig.get_paths()
diff --git a/pyodide/README.md b/pyodide/README.md
index 68853df8ab..4d9de6f408 100644
--- a/pyodide/README.md
+++ b/pyodide/README.md
@@ -13,7 +13,7 @@ There are two ways to build pyodide ifcopenshell Python wrapper wheel.
         - build ifcopenshell and its dependencies
         - note that rerunning `pyodide build-recipes` will remove previous build folder and rebuild all dependencies.  
         The way to avoid it, if build fails, is to use `pyodide build-recipes-no-deps ifcopenshell --continue` instead.
-    - run `pyodide/setup.py` in `IfcOpenShell` root, producing a wheel in `IfcOpenShell/dist`
+    - run `setup.py` in `IfcOpenShell` root, producing a wheel in `IfcOpenShell/dist`
     - copy that wheel to `packages/ifcopenshell/dist`
     - `--install` it to current build envrionment
         - copy the wheel next to `dist` folder (in root directory, next to `packages`)
@@ -29,6 +29,5 @@ since it's pure cmake without any additional moving parts.
 - setup debug build environment using `source pyodide/debug_build_env.sh /path/to/pyodide_root`
 - run `python nix/build-all.py -wasm -py-313` in `IfcOpenShell`
     - it will produce Python package in `IfcOpenShell/ifcopenshell`
-- move `IfcOpenShell/pyodide/setup.py` to `IfcOpenShell` root
 - run `pyodide build`
     - it will produce a wheel in `IfcOpenShell/dist`
diff --git a/pyodide/meta.yaml b/pyodide/meta.yaml
index 595db2689f..7c6580d801 100644
--- a/pyodide/meta.yaml
+++ b/pyodide/meta.yaml
@@ -9,8 +9,6 @@ source:
 build:
   script: |
     BUILD_CFG=Release python nix/build-all.py -v --wasm --py313
-    mv package/ifcopenshell .
-    cp pyodide/setup.py .
 
 about:
   home: http://ifcopenshell.org