Add support for pyinstaller (#8)

.github/workflows/ci.yml

@@ -108,7 +108,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -U .
-        pip install pytest pyinstaller
+        pip install pytest pyinstaller psutil glfw
     - name: Unit tests
       run: |
         pushd $HOME

pyproject.toml

@@ -27,7 +27,7 @@ glfw = ["glfw>=1.9"]
 lint = ["ruff", "pre-commit"]
 examples = ["numpy", "wgpu", "glfw", "pyside6"]
 docs = ["sphinx>7.2", "sphinx_rtd_theme", "sphinx-gallery"]
-tests = ["pytest", "numpy", "psutil", "wgpu", "glfw"]
+tests = ["pytest", "numpy", "wgpu", "glfw"]
 dev = ["rendercanvas[lint,tests,examples,docs]"]
 
 [project.entry-points."pyinstaller40"]

rendercanvas/__pyinstaller/__init__.py

@@ -0,0 +1,12 @@
+from os.path import dirname
+
+
+HERE = dirname(__file__)
+
+
+def get_hook_dirs():
+    return [HERE]
+
+
+def get_test_dirs():
+    return [HERE]

rendercanvas/__pyinstaller/conftest.py

@@ -0,0 +1 @@
+from PyInstaller.utils.conftest import *  # noqa: F403

rendercanvas/__pyinstaller/hook-rendercanvas.py

@@ -0,0 +1,22 @@
+# ruff: noqa: N999
+
+from PyInstaller.utils.hooks import collect_dynamic_libs
+
+# Init variables that PyInstaller will pick up.
+hiddenimports = []
+datas = []
+binaries = []
+
+# Add modules that are safe to add, i.e. don't pull in dependencies that we don't want.
+hiddenimports += ["rendercanvas.offscreen"]
+
+# Since glfw does not have a hook like this, it does not include the glfw binary
+# when freezing. We can solve this with the code below. Makes the binary a bit
+# larger, but only marginally (less than 300kb).
+try:
+    import glfw  # noqa: F401
+except ImportError:
+    pass
+else:
+    hiddenimports += ["rendercanvas.glfw"]
+    binaries += collect_dynamic_libs("glfw")

rendercanvas/__pyinstaller/test_rendercanvas.py

@@ -0,0 +1,47 @@
+script = """
+# The script part
+import sys
+import importlib
+
+from rendercanvas.auto import RenderCanvas
+
+if "glfw" not in RenderCanvas.__name__.lower():
+    raise RuntimeError(f"Expected a glfw canvas, got {RenderCanvas.__name__}")
+
+# The test part
+if "is_test" in sys.argv:
+    included_modules = [
+        "rendercanvas.glfw",
+        "rendercanvas.offscreen",
+        "glfw",
+    ]
+    excluded_modules = [
+        "PySide6.QtGui",
+        "PyQt6.QtGui",
+    ]
+    for module_name in included_modules:
+        importlib.import_module(module_name)
+    for module_name in excluded_modules:
+        try:
+            importlib.import_module(module_name)
+        except ModuleNotFoundError:
+            continue
+        raise RuntimeError(module_name + " is not supposed to be importable.")
+"""
+
+
+def test_pyi_rendercanvas(pyi_builder):
+    pyi_builder.test_source(script, app_args=["is_test"])
+
+
+# We could also test the script below, but it's not that interesting since it uses direct imports.
+# To safe CI-time we don't actively test it.
+script_qt = """
+import sys
+import importlib
+
+import PySide6
+from rendercanvas.qt import RenderCanvas
+
+assert "qt" in RenderCanvas.__name__.lower()
+"""