ci: avoid tomllib dependency

Author: johnhuang316

.github/workflows/publish-to-pypi.yml

@@ -67,11 +67,44 @@ jobs:
             exit 1
           fi
 
-          PYPROJECT_VERSION=$(python -c 'import pathlib, tomllib; data = tomllib.loads(pathlib.Path("pyproject.toml").read_text()); print(data["project"]["version"])')
-
-          INIT_VERSION=$(python -c 'import pathlib, re, sys; text = pathlib.Path("src/code_index_mcp/__init__.py").read_text(); match = re.search(r"__version__\s*=\s*\"([^\"]+)\"", text); sys.exit("Could not read __version__ from src/code_index_mcp/__init__.py") if not match else print(match.group(1))')
-
-          LOCK_VERSION=$(python -c 'import pathlib, tomllib, sys; data = tomllib.loads(pathlib.Path("uv.lock").read_text()); print(next((pkg["version"] for pkg in data["package"] if pkg["name"] == "code-index-mcp"), None) or sys.exit("Could not find code-index-mcp in uv.lock"))')
+          PYPROJECT_VERSION=$(python - <<'PY'
+            import pathlib, re
+
+            text = pathlib.Path("pyproject.toml").read_text()
+            match = re.search(r'^version\s*=\s*"([^"]+)"', text, re.MULTILINE)
+            if not match:
+                raise SystemExit("Could not read version from pyproject.toml")
+            print(match.group(1))
+            PY
+          )
+
+          INIT_VERSION=$(python - <<'PY'
+            import pathlib, re
+
+            text = pathlib.Path("src/code_index_mcp/__init__.py").read_text()
+            match = re.search(r'__version__\s*=\s*"([^"]+)"', text)
+            if not match:
+                raise SystemExit("Could not read __version__ from src/code_index_mcp/__init__.py")
+            print(match.group(1))
+            PY
+          )
+
+          LOCK_VERSION=$(python - <<'PY'
+            version = None
+            with open("uv.lock", "r", encoding="utf-8") as fh:
+                lines = fh.readlines()
+            for idx, line in enumerate(lines):
+                if line.strip() == 'name = "code-index-mcp"':
+                    for follower in lines[idx:idx+6]:
+                        if follower.strip().startswith("version ="):
+                            version = follower.split("=", 1)[1].strip().strip('"')
+                            break
+                    break
+            if version is None:
+                raise SystemExit("Could not find code-index-mcp in uv.lock")
+            print(version)
+            PY
+          )
 
           for entry in "pyproject.toml:$PYPROJECT_VERSION" "src/code_index_mcp/__init__.py:$INIT_VERSION" "uv.lock:$LOCK_VERSION"; do
             FILE=${entry%%:*}