Remove vendored pip and add Metadata class (#87)

Author: ryanking13

.gitignore

@@ -4,6 +4,7 @@ micropip/_version.py
 dist/
 build/
 .venv*
+.hypothesis/
 
 .vscode
 pyodide/

micropip/_compat.py

@@ -13,7 +13,6 @@
         loadedPackages,
         loadPackage,
         to_js,
-        wheel_dist_info_dir,
     )
 else:
     from ._compat_not_in_pyodide import (
@@ -26,7 +25,6 @@
         loadedPackages,
         loadPackage,
         to_js,
-        wheel_dist_info_dir,
     )
 
 __all__ = [
@@ -38,6 +36,5 @@
     "loadDynlib",
     "loadPackage",
     "get_dynlibs",
-    "wheel_dist_info_dir",
     "to_js",
 ]

micropip/_compat_in_pyodide.py

@@ -2,7 +2,7 @@
 from typing import IO
 from urllib.parse import urlparse
 
-from pyodide._package_loader import get_dynlibs, wheel_dist_info_dir
+from pyodide._package_loader import get_dynlibs
 from pyodide.ffi import IN_BROWSER, to_js
 from pyodide.http import pyfetch
 
@@ -54,6 +54,5 @@ async def fetch_string_and_headers(
     "loadDynlib",
     "loadPackage",
     "get_dynlibs",
-    "wheel_dist_info_dir",
     "to_js",
 ]

micropip/_compat_not_in_pyodide.py

@@ -2,7 +2,6 @@
 from io import BytesIO
 from pathlib import Path
 from typing import IO, Any
-from zipfile import ZipFile
 
 REPODATA_PACKAGES: dict[str, dict[str, Any]] = {}
 
@@ -64,43 +63,6 @@ def canonicalize_name(name: str) -> str:
     return _canonicalize_regex.sub("-", name).lower()
 
 
-# Vendored from pip
-class UnsupportedWheel(Exception):
-    """Unsupported wheel."""
-
-
-def wheel_dist_info_dir(source: ZipFile, name: str) -> str:
-    """Returns the name of the contained .dist-info directory.
-    Raises UnsupportedWheel if not found, >1 found, or it doesn't match the
-    provided name.
-    """
-    # Zip file path separators must be /
-    subdirs = {p.split("/", 1)[0] for p in source.namelist()}
-
-    info_dirs = [s for s in subdirs if s.endswith(".dist-info")]
-
-    if not info_dirs:
-        raise UnsupportedWheel(f".dist-info directory not found in wheel {name!r}")
-
-    if len(info_dirs) > 1:
-        raise UnsupportedWheel(
-            "multiple .dist-info directories found in wheel {!r}: {}".format(
-                name, ", ".join(info_dirs)
-            )
-        )
-
-    info_dir = info_dirs[0]
-
-    info_dir_name = canonicalize_name(info_dir)
-    canonical_name = canonicalize_name(name)
-    if not info_dir_name.startswith(canonical_name):
-        raise UnsupportedWheel(
-            f".dist-info directory {info_dir!r} does not start with {canonical_name!r}"
-        )
-
-    return info_dir
-
-
 class pyodide_js_:
     def __get__(self, attr):
         raise RuntimeError(f"Attempted to access property '{attr}' on pyodide_js dummy")
@@ -122,6 +84,5 @@ def loadPackage(packages: str | list[str]) -> None:
     "loadedPackages",
     "loadPackage",
     "get_dynlibs",
-    "wheel_dist_info_dir",
     "to_js",
 ]