Revert "Remove pkg_resources special casing for PyInstaller"

This reverts commit 6bb2b082c9.

I guess storing package data in qutebrowser/ would be the proper way,
but this doesn't actually work on macOS - there, the executable name is
already "qutebrowser"...

misc/qutebrowser.spec

@@ -13,17 +13,16 @@ block_cipher = None
 
 def get_data_files():
     data_files = [
-        ('../qutebrowser/html', 'qutebrowser/html'),
-        ('../qutebrowser/img', 'qutebrowser/img'),
-        ('../qutebrowser/javascript', 'qutebrowser/javascript'),
-        ('../qutebrowser/html/doc', 'qutebrowser/html/doc'),
-        ('../qutebrowser/git-commit-id', 'qutebrowser/'),
-        ('../qutebrowser/config/configdata.yml', 'qutebrowser/config'),
+        ('../qutebrowser/html', 'html'),
+        ('../qutebrowser/img', 'img'),
+        ('../qutebrowser/javascript', 'javascript'),
+        ('../qutebrowser/html/doc', 'html/doc'),
+        ('../qutebrowser/git-commit-id', '.'),
+        ('../qutebrowser/config/configdata.yml', 'config'),
     ]
 
     if os.path.exists(os.path.join('qutebrowser', '3rdparty', 'pdfjs')):
-        data_files.append(
-            ('../qutebrowser/3rdparty/pdfjs', 'qutebrowser/3rdparty/pdfjs'))
+        data_files.append(('../qutebrowser/3rdparty/pdfjs', '3rdparty/pdfjs'))
     else:
         print("Warning: excluding pdfjs as it's not present!")
 

qutebrowser/utils/utils.py

@@ -208,12 +208,24 @@ def read_file(filename: str, binary: bool = False) -> Any:
     if not binary and filename in _resource_cache:
         return _resource_cache[filename]
 
-    p = importlib_resources.files(qutebrowser) / filename
+    if hasattr(sys, 'frozen'):
+        # PyInstaller doesn't support pkg_resources :(
+        # https://github.com/pyinstaller/pyinstaller/wiki/FAQ#misc
+        fn = os.path.join(os.path.dirname(sys.executable), filename)
+        if binary:
+            f: IO
+            with open(fn, 'rb') as f:
+                return f.read()
+        else:
+            with open(fn, 'r', encoding='utf-8') as f:
+                return f.read()
+    else:
+        p = importlib_resources.files(qutebrowser) / filename
 
-    if binary:
-        return p.read_bytes()
+        if binary:
+            return p.read_bytes()
 
-    return p.read_text()
+        return p.read_text()
 
 
 def resource_filename(filename: str) -> str: