Enable Nuitka builds on M1 Mac

Nuitka crashes on my Catalina Intel Mac, and I doubt that it will
ever get fixed.  So continue using Pyinstaller

src/Makefile

@@ -192,7 +192,32 @@ nuitka-appimage:
 		scripts/stargate
 
 nuitka-appbundle:
-	exit 1
+	python3 -m nuitka \
+		--standalone \
+		--include-module=sgui \
+		--include-module=sglib \
+		--include-qt-plugins=platform,sensible \
+		--enable-plugin=pyqt6 \
+		--include-data-dir=files=files \
+		--include-data-files=engine/stargate-engine=engine/ \
+		--include-data-files=engine/*.dylib=engine/ \
+		--include-data-files=engine/sbsms=engine/ \
+		--include-data-files=meta.json=meta.json \
+		--include-data-files=COMMIT=COMMIT \
+		--include-data-files=engine/sbsms=engine/ \
+		--include-data-files=engine/rubberband=engine/ \
+		--include-data-files=engine/stargate-soundstretch=engine/ \
+		--macos-target-arch=arm64 \
+		--macos-create-app-bundle \
+		--macos-app-icon=macos/stargate.icns \
+		--macos-app-name='Stargate DAW' \
+		--macos-signed-app-name=com.github.stargatedaw.stargate \
+		--macos-app-mode=gui \
+		--macos-app-version=$(MINOR) \
+		scripts/stargate
+	mkdir -p dist
+	rm -rf dist/stargate.app/
+	mv stargate.app 'dist/Stargate DAW.app'
 
 py_vendor:
 	# Vendor Python dependencies not commonly available in distro repos

src/macos/release.py

@@ -54,11 +54,19 @@ def parse_args():
 if os.path.isdir(BUNDLE_PATH):
     shutil.rmtree(BUNDLE_PATH)
 
-retcode = subprocess.check_call([
-    'pyinstaller',
-    '--noconfirm',
-    'pyinstaller-mac-onedir.spec',
-])
+if ARCH == 'x86_64':
+    retcode = subprocess.check_call([
+        'pyinstaller',
+        '--noconfirm',
+        'pyinstaller-mac-onedir.spec',
+    ])
+elif ARCH == 'arm64':
+    retcode = subprocess.check_call([
+        'make',
+        'nuitka-appbundle',
+    ])
+else:
+    assert False, f"Unknown arch. {ARCH}"
 assert retcode == 0, retcode
 
 os.chdir('dist')

src/macos/requirements-m1.txt

@@ -3,6 +3,8 @@
 PyQt6==6.5.0
 PyQt6-Qt6==6.5.1
 
+Nuitka
+
 jinja2
 mido
 mutagen

src/sg_py_vendor/wavefile/libsndfile.py

@@ -30,6 +30,9 @@
 else:
     dllName = 'libsndfile'
 
+print(sys.platform)
+print(dllName)
+
 _lib=None
 try:
     from ctypes.util import find_library
@@ -51,14 +54,31 @@
         dllPath = dllName
     print(dllPath)
     _lib = ct.CDLL(dllPath)
-except:
+except Exception as ex:
+    print(f'Could not load {dllPath}: {ex}')
+
+if not _lib:
     try:
         #if not, get the dll installed with the wrapper
-        import os
         dllPath = os.path.dirname(os.path.abspath(__file__))
         _lib = ct.CDLL(os.path.join(dllPath, dllName))
-    except:
-        raise Exception("could not import libsndfile dll, make sure the dll '%s' is in the path"%(dllName))
+    except Exception as ex:
+        print(f'Could not load {dllPath}: {ex}')
+
+if not _lib:
+    try:
+        dllPath = os.path.dirname(os.path.abspath(sys.executable))
+        dllPath = os.path.join(dllPath, 'engine', dllName)
+        print(dllPath)
+        _lib = ct.CDLL(dllPath)
+    except Exception as ex:
+        print(f'Could not load {dllPath}: {ex}')
+
+if not _lib:
+    raise Exception(
+        f"could not import libsndfile dll, make sure the dll '{dllName}' "
+        "is in the path"
+    )
 
 _lib.sf_version_string.restype = ct.c_char_p
 _lib.sf_version_string.argtypes = None