locker: port base implementation from poetry

poetry/core/lock/__init__.py

@@ -0,0 +1,8 @@
+from poetry.core.lock.categories import LockCategory
+from poetry.core.lock.locker import Locker
+
+
+__all__ = [
+ LockCategory.__name__,
+ Locker.__name__,
+]

poetry/core/lock/categories.py

@@ -0,0 +1,11 @@
+from enum import Enum
+
+
+class LockCategory(Enum):
+ MAIN = "main"
+ DEV = "dev"
+
+ def __eq__(self, other):
+ if not isinstance(other, Enum):
+ return self.value == other
+ super(LockCategory, self).__eq__(other)