chore(lsprotocol): migrate to 2025.0.0 and cleanup artifacts

The changes align the project with the 2025.0.0 lsprotocol
release, removing the old backport and updating type hints
in the protocol hooks to use Sequence where appropriate. The
dist-info and packaging metadata for older lsprotocol
versions are replaced with the new 2025.0.0 artifacts.

- Remove exceptiongroup backport used on Python <3.11
- Use Sequence instead of List in LS protocol hooks
- Replace old dist-info with 2025.0.0 metadata

server/libs/packaging/direct_url.py

@@ -9,6 +9,7 @@ from typing import TYPE_CHECKING, Any, Protocol, TypeVar
 if TYPE_CHECKING:  # pragma: no cover
     import sys
     from collections.abc import Collection
+    from urllib.parse import SplitResult
 
     if sys.version_info >= (3, 11):
         from typing import Self
@@ -83,7 +84,7 @@ _PEP610_USER_PASS_ENV_VARS_REGEX = re.compile(
 def _strip_auth_from_netloc(netloc: str, safe_user_passwords: Collection[str]) -> str:
     if "@" not in netloc:
         return netloc
-    user_pass, netloc_no_user_pass = netloc.split("@", 1)
+    user_pass, netloc_no_user_pass = netloc.rsplit("@", 1)
     if user_pass in safe_user_passwords:
         return netloc
     if _PEP610_USER_PASS_ENV_VARS_REGEX.match(user_pass):
@@ -109,8 +110,15 @@ def _strip_url(url: str, safe_user_passwords: Collection[str]) -> str:
     )
 
 
+def _file_url_has_absolute_path(parsed_url: SplitResult) -> bool:
+    return parsed_url.path.startswith("/")
+
+
 class DirectUrlValidationError(Exception):
-    """Raised when when input data is not spec-compliant."""
+    """Raised when when input data is not spec-compliant.
+
+    .. versionadded:: 26.1
+    """
 
     context: str | None = None
     message: str
@@ -146,6 +154,8 @@ class _DirectUrlRequiredKeyError(DirectUrlValidationError):
 
 @dataclasses.dataclass(frozen=True, init=False)
 class VcsInfo:
+    """The version control information of a :class:`DirectUrl`."""
+
     vcs: str
     commit_id: str
     requested_revision: str | None = None
@@ -173,6 +183,8 @@ class VcsInfo:
 
 @dataclasses.dataclass(frozen=True, init=False)
 class ArchiveInfo:
+    """The archive information of a :class:`DirectUrl`."""
+
     hashes: Mapping[str, str] | None = None
 
     def __init__(
@@ -219,6 +231,8 @@ class ArchiveInfo:
 
 @dataclasses.dataclass(frozen=True, init=False)
 class DirInfo:
+    """The local directory information of a :class:`DirectUrl`."""
+
     editable: bool | None = None
 
     def __init__(
@@ -237,7 +251,10 @@ class DirInfo:
 
 @dataclasses.dataclass(frozen=True, init=False)
 class DirectUrl:
-    """A class representing a direct URL."""
+    """A class representing a direct URL.
+
+    .. versionadded:: 26.1
+    """
 
     url: str
     archive_info: ArchiveInfo | None = None
@@ -277,11 +294,18 @@ class DirectUrl:
             raise DirectUrlValidationError(
                 "Exactly one of vcs_info, archive_info, dir_info must be present"
             )
-        if direct_url.dir_info is not None and not direct_url.url.startswith("file://"):
-            raise DirectUrlValidationError(
-                "URL scheme must be file:// when dir_info is present",
-                context="url",
-            )
+        if direct_url.dir_info is not None:
+            parsed_url = urllib.parse.urlsplit(direct_url.url)
+            if parsed_url.scheme != "file":
+                raise DirectUrlValidationError(
+                    "URL scheme must be file:// when dir_info is present",
+                    context="url",
+                )
+            if not _file_url_has_absolute_path(parsed_url):
+                raise DirectUrlValidationError(
+                    "File URL must be absolute when dir_info is present",
+                    context="url",
+                )
         # XXX subdirectory must be relative, can we, should we validate that here?
         return direct_url