move to new vendoring fallback logic

archivebox/vendor/__init__.py

@@ -0,0 +1,34 @@
+import sys
+import inspect
+import importlib
+from pathlib import Path
+
+VENDOR_DIR = Path(__file__).parent
+
+VENDORED_LIBS = {
+    # sys.path dir:         library name
+    'python-atomicwrites':  'atomicwrites',
+    'django-taggit':        'taggit',
+    'pydantic-pkgr':        'pydantic_pkgr',
+    'pocket':               'pocket',
+    'base32-crockford':     'base32_crockford',
+}
+
+def load_vendored_libs():
+    for lib_subdir, lib_name in VENDORED_LIBS.items():
+        lib_dir = VENDOR_DIR / lib_subdir
+        assert lib_dir.is_dir(), 'Expected vendor libary {lib_name} could not be found in {lib_dir}'
+
+        try:
+            lib = importlib.import_module(lib_name)
+            # print(f"Successfully imported lib from environment {lib_name}: {inspect.getfile(lib)}")
+        except ImportError:
+            sys.path.append(str(lib_dir))
+            try:
+                lib = importlib.import_module(lib_name)
+                # print(f"Successfully imported lib from vendored fallback {lib_name}: {inspect.getfile(lib)}")
+            except ImportError as e:
+                print(f"Failed to import lib from environment or vendored fallback {lib_name}: {e}", file=sys.stderr)
+                sys.exit(1)
+        
+