feat: indie status page MVP -- FastAPI + SQLite

- 8 DB models (services, incidents, monitors, subscribers, etc.)
- Full CRUD API for services, incidents, monitors
- Public status page with live data
- Incident detail page with timeline
- API key authentication
- Uptime monitoring scheduler
- 13 tests passing
- TECHNICAL_DESIGN.md with full spec

venv/lib/python3.11/site-packages/packaging/requirements.py

@@ -0,0 +1,129 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+from __future__ import annotations
+
+from typing import Iterator
+
+from ._parser import parse_requirement as _parse_requirement
+from ._tokenizer import ParserSyntaxError
+from .markers import Marker, _normalize_extra_values
+from .specifiers import SpecifierSet
+from .utils import canonicalize_name
+
+__all__ = [
+    "InvalidRequirement",
+    "Requirement",
+]
+
+
+def __dir__() -> list[str]:
+    return __all__
+
+
+class InvalidRequirement(ValueError):
+    """
+    An invalid requirement was found, users should refer to PEP 508.
+    """
+
+
+class Requirement:
+    """Parse a requirement.
+
+    Parse a given requirement string into its parts, such as name, specifier,
+    URL, and extras. Raises InvalidRequirement on a badly-formed requirement
+    string.
+
+    Instances are safe to serialize with :mod:`pickle`. They use a stable
+    format so the same pickle can be loaded in future packaging releases.
+
+    .. versionchanged:: 26.2
+
+        Added a stable pickle format. Pickles created with packaging 26.2+ can
+        be unpickled with future releases.  Backward compatibility with pickles
+        from packaging < 26.2 is supported but may be removed in a future
+        release.
+    """
+
+    # TODO: Can we test whether something is contained within a requirement?
+    #       If so how do we do that? Do we need to test against the _name_ of
+    #       the thing as well as the version? What about the markers?
+    # TODO: Can we normalize the name and extra name?
+
+    def __init__(self, requirement_string: str) -> None:
+        try:
+            parsed = _parse_requirement(requirement_string)
+        except ParserSyntaxError as e:
+            raise InvalidRequirement(str(e)) from e
+
+        self.name: str = parsed.name
+        self.url: str | None = parsed.url or None
+        self.extras: set[str] = set(parsed.extras or [])
+        self.specifier: SpecifierSet = SpecifierSet(parsed.specifier)
+        self.marker: Marker | None = None
+        if parsed.marker is not None:
+            self.marker = Marker.__new__(Marker)
+            self.marker._markers = _normalize_extra_values(parsed.marker)
+
+    def _iter_parts(self, name: str) -> Iterator[str]:
+        yield name
+
+        if self.extras:
+            formatted_extras = ",".join(sorted(self.extras))
+            yield f"[{formatted_extras}]"
+
+        if self.specifier:
+            yield str(self.specifier)
+
+        if self.url:
+            yield f" @ {self.url}"
+            if self.marker:
+                yield " "
+
+        if self.marker:
+            yield f"; {self.marker}"
+
+    def __getstate__(self) -> str:
+        # Return the requirement string for compactness and stability.
+        # Re-parsed on load to reconstruct all fields.
+        return str(self)
+
+    def __setstate__(self, state: object) -> None:
+        if isinstance(state, str):
+            # New format (26.2+): just the requirement string.
+            try:
+                tmp = Requirement(state)
+            except InvalidRequirement as exc:
+                raise TypeError(f"Cannot restore Requirement from {state!r}") from exc
+            self.name = tmp.name
+            self.url = tmp.url
+            self.extras = tmp.extras
+            self.specifier = tmp.specifier
+            self.marker = tmp.marker
+            return
+        if isinstance(state, dict):
+            # Old format (packaging <= 26.1, no __slots__): plain __dict__.
+            self.__dict__.update(state)
+            return
+        raise TypeError(f"Cannot restore Requirement from {state!r}")
+
+    def __str__(self) -> str:
+        return "".join(self._iter_parts(self.name))
+
+    def __repr__(self) -> str:
+        return f"<{self.__class__.__name__}({str(self)!r})>"
+
+    def __hash__(self) -> int:
+        return hash(tuple(self._iter_parts(canonicalize_name(self.name))))
+
+    def __eq__(self, other: object) -> bool:
+        if not isinstance(other, Requirement):
+            return NotImplemented
+
+        return (
+            canonicalize_name(self.name) == canonicalize_name(other.name)
+            and self.extras == other.extras
+            and self.specifier == other.specifier
+            and self.url == other.url
+            and self.marker == other.marker
+        )