Box pyproject that wont build with poetry-core

pyproject.toml

[tool.black]
line-length = 120
target-version = ['py37', 'py38', 'py39', 'py310', 'py311']
exclude = '''
/(
    \.eggs
  | \.git
  | \.idea
  | \.pytest_cache
  | _build
  | build
  | dist
  | venv
)/
'''

[tool.poetry]
name = "python-box"
version = "7.0.0"
description = "Advanced Python dictionaries with dot notation access"
license = "MIT"
authors = ["Chris Griffith <chris@cdgriffith.com>", ]
include = [
        "box/box_logo.png",
        "box/AUTHORS.rst",
        "box/CHANGES.rst",
        "box/LICENSE",
        "box/*"
]
readme = "README.rst"
repository = "https://github.com/cdgriffith/Box"
packages = [ { include = "box" }]
classifiers = [
        "Programming Language :: Python",
        "Programming Language :: Python :: 3",
        "Programming Language :: Python :: 3.7",
        "Programming Language :: Python :: 3.8",
        "Programming Language :: Python :: 3.9",
        "Programming Language :: Python :: 3.10",
        "Programming Language :: Python :: 3.11",
        "Programming Language :: Python :: Implementation :: CPython",
        "Development Status :: 5 - Production/Stable",
        "Natural Language :: English",
        "Intended Audience :: Developers",
        "License :: OSI Approved :: MIT License",
        "Operating System :: OS Independent",
        "Topic :: Utilities",
        "Topic :: Software Development",
        "Topic :: Software Development :: Libraries :: Python Modules"
]

[tool.poetry.dependencies]
python = ">=3.7"
msgpack = {version = ">=1.0.0", optional = true}
"ruamel.yaml" = {version = ">=0.17", optional = true}
tomli = {version = ">=1.2.3", python = '<3.11', optional = true}
tomli-w = {version = ">=1.0.0", optional = true}
PyYAML = {version = ">=6.0", optional = true}
toml = {version = ">=0.10.2", optional = true}

[tool.poetry.group.dev]
optional = true

[tool.poetry.group.dev.dependencies]
black = ">=22.10.0"
Cython = ">=0.29"
pre-commit = ">=2.20"
coveralls = ">=3.3.1"
flake8 = ">=5.0.4"
flake8-print = ">=5.0.0"
mypy = ">=0.991"
setuptools = ">=67.0.0"
wheel = ">=0.38.4"
twine = ">=4.0.2"

[tool.poetry.group.test]
optional = true

[tool.poetry.group.test.dependencies]
coverage = ">=5.0.4"
pytest = ">=7.1.3"
pytest-cov = ">=2.8.1"
msgpack = ">=1.0.0"
"ruamel.yaml" =">=0.17"
tomli = {version = ">=1.2.3", python = '<3.11'}
tomli-w = ">=1.0.0"
types-PyYAML = ">=6.0.3"
wheel = ">=0.34.2"


[tool.poetry.extras]
all = ["ruamel.yaml", "tomli", "tomli-w", "msgpack"]
yaml = ["ruamel.yaml"]
"ruamel.yaml" = ["ruamel.yaml"]
PyYAML = ["PyYAML"]
tomli = ["tomli", "tomli-w"]
toml = ["toml"]
msgpack=  ["msgpack"]

[tool.poetry.build]
script = "build.py"

[build-system]
requires = ["poetry-core>=1.5.0", "Cython", "setuptools", "wheel"]
build-backend = "poetry.core.masonry.api"