Fix setup for new uv init layouts; use backend/ package dir for new projects

Store the two-digit WS id (colored when stderr supports color, plain
otherwise) in the ASGI scope state so user code can include it in its
own log lines via websocket.state.logid.

Move terminal helpers (use_color, strip_ansi, display width) into a new
dependency-free fastapi_vue.tty module, absorbing termwidth.py, to keep
imports one-directional and avoid the logging/accesslog cycle.

fastapi-vue/fastapi_vue/accesslog.py

@@ -9,7 +9,7 @@ import time
 from ipaddress import IPv6Address
 from typing import TYPE_CHECKING, cast
 
-from .termwidth import pad_display
+from .tty import pad_display, use_color
 
 if TYPE_CHECKING:
     from uvicorn._types import (
@@ -388,6 +388,7 @@ class AccessLogMiddleware:
             if message["type"] == "websocket.accept" and not accepted:
                 accepted = True
                 ws_id = _next_ws_id()
+                www_scope["state"]["logid"] = f"{_WS_OPEN}{ws_id}{_RESET}" if use_color() else ws_id
                 fields = _ws_open_extra(www_scope, ws_id, origin, _extra())
                 logger.info(_assemble_access_log(fields), extra=fields)
             elif message["type"] == "websocket.http.response.start" and not closed:

fastapi-vue/fastapi_vue/logging.py

@@ -10,9 +10,6 @@ from __future__ import annotations
 
 import io
 import logging
-import os
-import re
-import sys
 from contextlib import suppress
 from copy import deepcopy
 from typing import TYPE_CHECKING, Literal
@@ -32,8 +29,7 @@ if TYPE_CHECKING:
 
 from .accesslog import AccessLogMiddleware
 from .environ import env
-
+from .tty import strip_ansi, use_color
-ANSI_ESCAPE_RE = re.compile(r"\x1b\[[0-9;]*m")
 
 RESET = "\033[0m"
 
@@ -42,26 +38,6 @@ ACCESS_LOG_FMT = "%(client)s %(status)s %(method)s %(host)s%(path)s %(extra)s%(t
 ACCESS_LOGGER = "fastapi_vue.access"
 
 
-def strip_ansi(text: str) -> str:
-    """Remove ANSI escape codes from text."""
-    return ANSI_ESCAPE_RE.sub("", text)
-
-
-def use_color(stream: io.TextIOBase = sys.stderr) -> bool:
-    """Test if the stream supports color codes."""
-    if os.environ.get("NO_COLOR"):  # Non empty means no (no-color.org)
-        return False
-    if os.environ.get("FORCE_COLOR", "") not in {"", "0"}:  # force-color.org, node
-        return True
-    if hasattr(stream, "isatty") and stream.isatty():
-        return True
-    with suppress(KeyError, ValueError, OSError):  # Journald does color (-ocat)
-        dev, ino = map(int, os.environ["JOURNAL_STREAM"].split(":", 1))
-        st = os.fstat(stream.fileno())
-        return st.st_dev == dev and st.st_ino == ino
-    return False
-
-
 _LEVEL_EMOJI = {
     logging.DEBUG: "🐛",
     logging.INFO: "🔷",
@@ -115,7 +91,7 @@ class Formatter(logging.Formatter):
         if use_colors in (True, False):
             self.use_colors = use_colors
         else:
-            self.use_colors = use_color(sys.stdout)
+            self.use_colors = use_color()
         super().__init__(fmt=fmt, datefmt=datefmt, style=style)
 
     def formatMessage(self, record: logging.LogRecord) -> str:  # noqa: N802

fastapi-vue/fastapi_vue/server.py

@@ -22,9 +22,9 @@ from .logging import (
     patch_lifespan_logging,
     patch_log_config,
     patch_server_error_middleware,
-    use_color,
 )
 from .startupbox import print_box
+from .tty import use_color
 
 tracerite.load()  # Early load on CLI load (import server); uvicorn workers reload via log config
 

fastapi-vue/fastapi_vue/startupbox.py

@@ -2,14 +2,14 @@
 
 import sys
 
-from .termwidth import display_width, pad_display
+from .tty import display_width, pad_display
 
 
 def print_box(text: str) -> None:
     """Print text in a rounded unicode box sized to its longest line.
 
     The text is split on newlines as-is (not trimmed). Padding accounts
-    for ANSI colors and unicode display width (see termwidth.display_width).
+    for ANSI colors and unicode display width (see tty.display_width).
     """
     lines = text.split("\n")
     width = max(map(display_width, lines))

fastapi-vue/fastapi_vue/tty.py

@@ -1,11 +1,37 @@
-"""Terminal display width calculation for unicode and ANSI-colored text."""
+"""Terminal color detection, ANSI helpers, and display width calculation."""
 
+from __future__ import annotations
+
+import io
+import os
 import re
+import sys
 import unicodedata
+from contextlib import suppress
 
 ANSI_ESCAPE_RE = re.compile(r"\x1b\[[0-9;:]*[A-Za-z]")
 
 
+def strip_ansi(text: str) -> str:
+    """Remove ANSI escape codes from text."""
+    return ANSI_ESCAPE_RE.sub("", text)
+
+
+def use_color(stream: io.TextIOBase = sys.stderr) -> bool:
+    """Test if the stream supports color codes."""
+    if os.environ.get("NO_COLOR"):  # Non empty means no (no-color.org)
+        return False
+    if os.environ.get("FORCE_COLOR", "") not in {"", "0"}:  # force-color.org, node
+        return True
+    if hasattr(stream, "isatty") and stream.isatty():
+        return True
+    with suppress(KeyError, ValueError, OSError):  # Journald does color (-ocat)
+        dev, ino = map(int, os.environ["JOURNAL_STREAM"].split(":", 1))
+        st = os.fstat(stream.fileno())
+        return st.st_dev == dev and st.st_ino == ino
+    return False
+
+
 def _is_wide(char: str) -> bool:
     """Return True for characters rendered as two terminal columns."""
     if unicodedata.east_asian_width(char) in {"F", "W"}:

fastapi_vue_setup.py

@@ -138,18 +138,23 @@ DEFAULT_HEALTH = "/api/health?from=devserver.py"
 UPGRADE_MARKER = "auto-upgrade@fastapi-vue-setup"
 
 # pyproject.toml additions for patched projects
+# packages/only-include use the package path relative to the project root
+# (MODULE_NAME placeholder), so both flat and nested layouts work; the wheel
+# target strips the leading directories, mapping e.g. backend/my_app -> my_app
 PYPROJECT_ADDITIONS = {
     "tool": {
         "hatch": {
             "build": {
-                "packages": ["MODULE_NAME"],
                 "artifacts": ["MODULE_NAME/frontend-build"],
                 "targets": {
+                    "wheel": {
+                        "packages": ["MODULE_NAME"],
+                    },
                     "sdist": {
+                        "only-include": ["MODULE_NAME", "scripts/fastapi-vue"],
                         "hooks": {"custom": {"path": "scripts/fastapi-vue/buildhook.py"}},
-                    }
+                    },
                 },
-                "only-packages": True,
             }
         }
     },
@@ -368,6 +373,19 @@ def find_module_name(project_dir: Path) -> str | None:
     return None
 
 
+def find_module_dir(project_dir: Path, module_name: str) -> Path:
+    """Locate the Python package directory.
+
+    Supports flat (<module>), src/<module>, and backend/<module> layouts.
+    For new projects (no package yet), defaults to the backend/ layout.
+    """
+    for sub in (module_name, f"src/{module_name}", f"backend/{module_name}"):
+        candidate = project_dir / sub
+        if candidate.is_dir():
+            return candidate
+    return project_dir / "backend" / module_name
+
+
 def find_fastapi_app(module_dir: Path, project_dir: Path | None = None) -> tuple[Path, str] | None:
     """Find the FastAPI app in a module directory.
 
@@ -1180,13 +1198,26 @@ def _write_fallback_file(
 
 
 def merge_pyproject(
-    data: tomlkit.TOMLDocument, additions: dict, module_name: str
+    data: tomlkit.TOMLDocument, additions: dict, module_rel: str
 ) -> tomlkit.TOMLDocument:
-    """Merge additions into pyproject.toml data, preserving comments and existing values."""
+    """Merge additions into pyproject.toml data, preserving comments and existing values.
+
+    module_rel is the package path relative to the project root (e.g. "backend/my_app").
+    """
     # Ensure hatchling build system is configured
     if "build-system" not in data:
         data["build-system"] = tomlkit.table()
 
+    # Replace uv_build with hatchling: the frontend build hook and artifacts
+    # handling require hatch, which uv_build does not support
+    if data["build-system"].get("build-backend") == "uv_build":
+        data["build-system"]["requires"] = ["hatchling"]
+        data["build-system"]["build-backend"] = "hatchling.build"
+        uv_tool = data.get("tool", {}).get("uv", {}) if "tool" in data else {}
+        if "build-backend" in uv_tool:
+            del data["tool"]["uv"]["build-backend"]
+        print("ℹ️  Replaced uv_build with hatchling (required for the frontend build hook)")
+
     # Add hatchling to requires if not present, preserving existing requires
     if "requires" not in data["build-system"]:
         data["build-system"]["requires"] = ["hatchling"]
@@ -1226,38 +1257,45 @@ def merge_pyproject(
     hatch_build = data["tool"]["hatch"]["build"]
     hatch_additions = additions["tool"]["hatch"]["build"]
 
-    # Set packages if not already set
-    if "packages" not in hatch_build:
-        hatch_build["packages"] = [
-            p.replace("MODULE_NAME", module_name) for p in hatch_additions["packages"]
-        ]
-
     # Set artifacts if not already set
     if "artifacts" not in hatch_build:
         hatch_build["artifacts"] = [
-            a.replace("MODULE_NAME", module_name) for a in hatch_additions["artifacts"]
+            a.replace("MODULE_NAME", module_rel) for a in hatch_additions["artifacts"]
         ]
 
-    # Set only-packages if not already set
+    # Add wheel/sdist targets
-    if "only-packages" not in hatch_build:
-        hatch_build["only-packages"] = hatch_additions["only-packages"]
-
-    # Add sdist target with custom hook
     if "targets" not in hatch_build:
         hatch_build["targets"] = tomlkit.table()
-    if "sdist" not in hatch_build["targets"]:
+    targets = hatch_build["targets"]
-        hatch_build["targets"]["sdist"] = tomlkit.table()
+    target_additions = hatch_additions["targets"]
-    if "hooks" not in hatch_build["targets"]["sdist"]:
+
-        hatch_build["targets"]["sdist"]["hooks"] = tomlkit.table()
+    # Wheel: set packages if neither the wheel target nor the top-level
-    if "custom" not in hatch_build["targets"]["sdist"]["hooks"]:
+    # hatch build config (older setups) defines them
-        hatch_build["targets"]["sdist"]["hooks"]["custom"] = tomlkit.table()
+    if "wheel" not in targets:
-    if "path" not in hatch_build["targets"]["sdist"]["hooks"]["custom"]:
+        targets["wheel"] = tomlkit.table()
-        hatch_build["targets"]["sdist"]["hooks"]["custom"]["path"] = hatch_additions["targets"][
+    if "packages" not in targets["wheel"] and "packages" not in hatch_build:
-            "sdist"
+        targets["wheel"]["packages"] = [
-        ]["hooks"]["custom"]["path"]
+            p.replace("MODULE_NAME", module_rel) for p in target_additions["wheel"]["packages"]
-    elif hatch_build["targets"]["sdist"]["hooks"]["custom"]["path"] == OLD_BUILD_HOOK_PATH:
+        ]
+
+    # Sdist: only-include (keeps the package directory prefix so wheels built
+    # from the sdist find the same layout) plus the frontend build hook
+    if "sdist" not in targets:
+        targets["sdist"] = tomlkit.table()
+    sdist = targets["sdist"]
+    if "only-include" not in sdist:
+        sdist["only-include"] = [
+            p.replace("MODULE_NAME", module_rel) for p in target_additions["sdist"]["only-include"]
+        ]
+    if "hooks" not in sdist:
+        sdist["hooks"] = tomlkit.table()
+    if "custom" not in sdist["hooks"]:
+        sdist["hooks"]["custom"] = tomlkit.table()
+    if "path" not in sdist["hooks"]["custom"]:
+        sdist["hooks"]["custom"]["path"] = target_additions["sdist"]["hooks"]["custom"]["path"]
+    elif sdist["hooks"]["custom"]["path"] == OLD_BUILD_HOOK_PATH:
         # Migrate old build hook path to new name
-        hatch_build["targets"]["sdist"]["hooks"]["custom"]["path"] = NEW_BUILD_HOOK_PATH
+        sdist["hooks"]["custom"]["path"] = NEW_BUILD_HOOK_PATH
 
     return data
 
@@ -1308,17 +1346,20 @@ def ensure_python_project(project_dir: Path, *, dry: bool = False) -> bool:
         return True
 
     if dry:
-        print(f"📦 Would run: uv init {project_dir}")
+        print(f"📦 Would run: uv init --bare --build-backend hatchling {project_dir}")
         return True
 
     print("📦 No pyproject.toml found, initializing Python project...")
-    print(">>> uv init")
+    print(">>> uv init --bare --build-backend hatchling")
-    result = subprocess.run(["uv", "init", str(project_dir)], check=False)  # noqa: S603, S607
+    result = subprocess.run(  # noqa: S603
+        ["uv", "init", "--bare", "--vcs", "git", "--build-backend", "hatchling", str(project_dir)],  # noqa: S607
+        check=False,
+    )
     if result.returncode != 0:
         print("❌ uv init failed")
         return False
 
-    # Remove files created by uv init that we don't need
+    # Remove boilerplate files created by older uv init versions
     for filename in ["hello.py", "main.py", ".python-version"]:
         filepath = project_dir / filename
         if filepath.exists():
@@ -1412,6 +1453,7 @@ def cmd_setup(args: argparse.Namespace) -> int:
         return 1
 
     # Step 2: Ensure Python project exists
+    fresh_project = not (project_dir / "pyproject.toml").exists()
     if not ensure_python_project(project_dir, dry=dry):
         return 1
 
@@ -1424,7 +1466,10 @@ def cmd_setup(args: argparse.Namespace) -> int:
     else:
         print(f"📦 Module: {module_name}")
 
-    module_dir = project_dir / module_name
+    module_dir = find_module_dir(project_dir, module_name)
+    module_rel = module_dir.relative_to(project_dir).as_posix()
+    if module_rel != module_name:
+        print(f"📂 Package layout: {module_rel}/")
     scripts_dir = project_dir / "scripts"
     fastapi_vue_scripts = scripts_dir / "fastapi-vue"
 
@@ -1436,8 +1481,9 @@ def cmd_setup(args: argparse.Namespace) -> int:
     if existing_cli_module:
         print(f"ℹ️  Using existing CLI: {existing_cli_module}")
 
-    # Resolve the CLI main module to a file path
+    # Resolve the CLI main module to a file path (relative to the import root,
-    main = project_dir / Path(*main_module_path.split(".")).with_suffix(".py")
+    # i.e. the parent of the package directory)
+    main = module_dir.parent / Path(*main_module_path.split(".")).with_suffix(".py")
 
     # Determine port configuration
     # Priority: --ports argument > existing project values > defaults
@@ -1485,6 +1531,7 @@ def cmd_setup(args: argparse.Namespace) -> int:
     # Template variables
     tpl_vars = {
         "MODULE_NAME": module_name,
+        "MODULE_DIR": module_rel,
         "PROJECT_TITLE": project_title,
         "TEMPLATE_DEFAULT_PORT": str(default_port),
         "TEMPLATE_VITE_PORT": str(vite_port),
@@ -1499,8 +1546,8 @@ def cmd_setup(args: argparse.Namespace) -> int:
         app_file, app_var = app_info
         print(f"📍 Found FastAPI app: {app_var} in {app_file.name}")
         tpl_vars["APP_VAR"] = app_var
-        # Dotted module path relative to project dir (e.g. "{module_name}.api.main")
+        # Dotted module path (e.g. "{module_name}.api.main")
-        app_module = ".".join(app_file.relative_to(project_dir).with_suffix("").parts)
+        app_module = ".".join(app_file.relative_to(module_dir.parent).with_suffix("").parts)
         tpl_vars["APP_MODULE"] = app_module
     else:
         print("📍 No existing FastAPI app found, will create new one")
@@ -1583,12 +1630,15 @@ def cmd_setup(args: argparse.Namespace) -> int:
         )
     else:
         # No app: create full app.py
-        # Create __init__.py if missing
+        # Create __init__.py if missing (overwrite uv init hello-world boilerplate)
         init_file = module_dir / "__init__.py"
-        if not init_file.exists():
+        boilerplate = init_file.exists() and re.search(
+            r'^def main\(\) -> None:\s*\n\s*print\("Hello from', init_file.read_text("UTF-8")
+        )
+        if not init_file.exists() or boilerplate:
             template = load_template("backend/__init__.py")
             content = render_template(template, **tpl_vars)
-            write_file(init_file, content, overwrite=False, dry=dry)
+            write_file(init_file, content, overwrite=False, dry=dry, force=boilerplate)
 
         # Create app.py
         app_file_path = module_dir / "app.py"
@@ -1669,9 +1719,10 @@ def cmd_setup(args: argparse.Namespace) -> int:
         plugin_file = frontend_dir / "vite-plugin-fastapi.js"
         # Upgrade old plugin versions that lack the auto-upgrade marker
         _upgrade_old_vite_plugin(plugin_file, module_name, dry=dry)
-        template = load_template("frontend/vite-plugin-fastapi.js")
+        for plugin_template in ("vite-plugin-fastapi.js", "vite-plugin-fastapi.d.ts"):
-        content = render_template(template, **tpl_vars)
+            template = load_template(f"frontend/{plugin_template}")
-        write_file(plugin_file, content, overwrite=True, dry=dry)
+            content = render_template(template, **tpl_vars)
+            write_file(frontend_dir / plugin_template, content, overwrite=True, dry=dry)
 
         # Find existing vite config (prefer .ts, fall back to .js)
         vite_config_ts = frontend_dir / "vite.config.ts"
@@ -1694,13 +1745,29 @@ def cmd_setup(args: argparse.Namespace) -> int:
         old_content = pyproject_path.read_text("UTF-8")
         data = tomlkit.parse(old_content)
 
-        updated = merge_pyproject(data, PYPROJECT_ADDITIONS, module_name)
+        updated = merge_pyproject(data, PYPROJECT_ADDITIONS, module_rel)
 
-        # Only add script entry if project doesn't already have scripts
+        # Ensure a script entry pointing at our __main__:main
-        if "scripts" not in updated["project"] or not updated["project"]["scripts"]:
+        scripts = updated["project"].get("scripts")
+        main_entry = f"{module_name}.__main__:main"
+        if not scripts:
             updated["project"]["scripts"] = tomlkit.table()
-            script_name = module_name.replace("_", "-")
+            updated["project"]["scripts"][module_name.replace("_", "-")] = main_entry
-            updated["project"]["scripts"][script_name] = f"{module_name}.__main__:main"
+        else:
+            has_our_entry = any(
+                isinstance(entry, str) and entry.startswith(f"{module_name}.")
+                for entry in scripts.values()
+            )
+            if not has_our_entry:
+                # Rewrite uv init boilerplate ("my-app = \"my_app:main\"") if present
+                boilerplate = next(
+                    (name for name, entry in scripts.items() if entry == f"{module_name}:main"),
+                    None,
+                )
+                if boilerplate:
+                    scripts[boilerplate] = main_entry
+                else:
+                    scripts[module_name.replace("_", "-")] = main_entry
 
         # Check if content actually changed
         new_content = tomlkit.dumps(updated)
@@ -1715,8 +1782,16 @@ def cmd_setup(args: argparse.Namespace) -> int:
 
     # === Update .gitignore ===
     gitignore_path = project_dir / ".gitignore"
-    gitignore_entry = f"/{module_name}/frontend-build"
+    gitignore_entry = f"/{module_rel}/frontend-build"
-    if gitignore_path.exists():
+    if fresh_project:
+        # New project: opinionated .gitignore (ignore dotfiles and lockfiles)
+        content = f"{gitignore_entry}\n.*\n!.gitignore\n*.lock\n"
+        if dry:
+            print(f"✅ Would create opinionated .gitignore in {project_dir}")
+        else:
+            gitignore_path.write_text(content, "UTF-8", newline="\n")
+            print("✅ Created .gitignore")
+    elif gitignore_path.exists():
         gitignore_content = gitignore_path.read_bytes()
         if b"frontend-build" in gitignore_content:
             print("✔️  .gitignore (frontend-build already ignored)")

template/frontend/vite-plugin-fastapi.d.ts

@@ -0,0 +1,6 @@
+// auto-upgrade@fastapi-vue-setup -- remove this if you edit the plugin
+import type { Plugin } from 'vite'
+
+declare function fastapiVue(options?: { paths?: string[] }): Plugin
+
+export default fastapiVue

template/frontend/vite-plugin-fastapi.js

@@ -30,7 +30,7 @@ export default function fastapiVue({ paths = ['/api'] } = {}) {
       clearScreen: false,
       server: { proxy },
       build: {
-        outDir: '../MODULE_NAME/frontend-build',
+        outDir: '../MODULE_DIR/frontend-build',
         emptyOutDir: true,
       },
     }),