refactor: add "flake8-simplify" plugin and simplify code

.flake8

@@ -1,4 +1,4 @@
 [flake8]
-extend-ignore = W503,E203,E501,D100,D101,D102,D103,D104,D105,D107
+extend-ignore = W503,E203,E501,D100,D101,D102,D103,D104,D105,D107,SIM117
 max-complexity = 20
 max-line-length = 88

copier/main.py

@@ -275,9 +275,8 @@ def _render_allowed(
         assert not dst_relpath.is_absolute()
         assert not expected_contents or not is_dir, "Dirs cannot have expected content"
         dst_abspath = Path(self.subproject.local_abspath, dst_relpath)
-        if dst_relpath != Path("."):
-            if self.match_exclude(dst_relpath):
-                return False
+        if dst_relpath != Path(".") and self.match_exclude(dst_relpath):
+            return False
         try:
             previous_content = dst_abspath.read_bytes()
         except FileNotFoundError:
@@ -291,9 +290,10 @@ def _render_allowed(
             return True
         except (IsADirectoryError, PermissionError) as error:
             # HACK https://bugs.python.org/issue43095
-            if isinstance(error, PermissionError):
-                if not (error.errno == 13 and platform.system() == "Windows"):
-                    raise
+            if isinstance(error, PermissionError) and not (
+                error.errno == 13 and platform.system() == "Windows"
+            ):
+                raise
             if is_dir:
                 printf(
                     "identical",

copier/vcs.py

@@ -30,7 +30,7 @@ def is_git_repo_root(path: StrOrPath) -> bool:
     """Indicate if a given path is a git repo root directory."""
     try:
         with local.cwd(Path(path, ".git")):
-            return bool(git("rev-parse", "--is-inside-git-dir").strip() == "true")
+            return git("rev-parse", "--is-inside-git-dir").strip() == "true"
     except OSError:
         return False
 

pyproject.toml

@@ -59,6 +59,7 @@ flake8 = ">=4.0.1"
 flake8-bugbear = ">=22.1.11"
 flake8-comprehensions = ">=3.8.0"
 flake8-debugger = ">=4.0.0"
+flake8-simplify = ">=0.19.3"
 isort = ">=5.10.1"
 mypy = ">=0.931"
 pexpect = ">=4.8.0"