flake8: fix various whitespace errors with badly aligned code

mesonbuild/compilers/detect.py

@@ -255,8 +255,7 @@ def _get_compilers(env: 'Environment', lang: str, for_machine: MachineChoice) ->
 def _handle_exceptions(
         exceptions: T.Mapping[str, T.Union[Exception, str]],
         binaries: T.List[T.List[str]],
-        bintype: str = 'compiler'
-    ) -> T.NoReturn:
+        bintype: str = 'compiler') -> T.NoReturn:
     errmsg = f'Unknown {bintype}(s): {binaries}'
     if exceptions:
         errmsg += '\nThe following exception(s) were encountered:'

mesonbuild/compilers/mixins/pgi.py

@@ -49,11 +49,12 @@ class PGICompiler(Compiler):
         self.base_options = {OptionKey('b_pch')}
 
         default_warn_args = ['-Minform=inform']
-        self.warn_args = {'0': [],
+        self.warn_args: T.Dict[str, T.List[str]] = {
+            '0': [],
             '1': default_warn_args,
             '2': default_warn_args,
             '3': default_warn_args
-        }  # type: T.Dict[str, T.List[str]]
+        }
 
     def get_module_incdir_args(self) -> T.Tuple[str]:
         return ('-module', )

mesonbuild/modules/gnome.py

@@ -339,7 +339,8 @@ class GnomeModule(ExtensionModule):
         # Normal program lookup
         return state.find_program(name, required=required)
 
-    @typed_kwargs('gnome.post_install',
+    @typed_kwargs(
+        'gnome.post_install',
         KwargInfo('glib_compile_schemas', bool, default=False),
         KwargInfo('gio_querymodules', ContainerTypeInfo(list, str), default=[], listify=True),
         KwargInfo('gtk_update_icon_cache', bool, default=False),