poetry: TypeError unhashable type: 'Integer' installing dependencies using Poetry 1.5.1

• Poetry version: 1.5.1
• Python version: 3.11
• OS version and name: python:3.11-slim-bullseye Docker image
• pyproject.toml:

[tool.poetry.dependencies]
python = "^3.10, <3.12"

typing_extensions = "*"
fastapi = "*"
uvicorn = { version = "*", extras = ["standard"] }
uvloop = { version = "*", markers = "sys_platform != 'win32'" }
psutil = "*"
httpx = ">=0.15.4, <0.24.0"
attrs = ">=21.3.0"
python-dateutil = "^2.8.0"
imageio = "*"
numpy = "*"
opencv-python-headless = ">4.5, <4.6"
Pillow = "*"
scipy = "*"
scikit-image = "*"
pydantic = "*"
pandas = "*"
tflite-runtime-nightly = { version = "*", markers = "sys_platform == 'linux'" }
tensorflow-macos = { version = "2.12.0", markers = "sys_platform == 'darwin'" }
tensorflow-cpu = { version = "*", markers = "sys_platform != 'linux' and sys_platform != 'darwin'" }

• I am on the latest stable Poetry version, installed using a recommended method.
• I have searched the issues of this repo and believe that this is not a duplicate.
• I have consulted the FAQ and blog for any relevant entries or release notes.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

As of today, installing Poetry 1.5.1 and running poetry install in an python:3.11-slim-bullseye Docker image build started throwing an exception.

FROM python:3.11-slim-bullseye

ENV POETRY_VERSION 1.5.1

ENV WORKDIR /src

WORKDIR ${WORKDIR}

RUN apt-get update && apt-get install -y \
    python3-dev \
    gcc \
 && rm -rf /var/lib/apt/lists/*

RUN pip install "poetry==${POETRY_VERSION}"

ENV VIRTUAL_ENV /opt/venv
RUN python -m venv ${VIRTUAL_ENV}
ENV PATH "${VIRTUAL_ENV}/bin:${PATH}"

COPY pyproject.toml poetry.lock ./
RUN poetry config installer.max-workers 4 && \
    poetry install --only main --no-root

Error output:

#16 [processing_server python_builder  7/12] RUN poetry config installer.max-workers 4 &&     poetry install --only main --no-root
#16 1.038 Installing dependencies from lock file
#16 2.158 
#16 2.158 Package operations: 39 installs, 0 updates, 0 removals
#16 2.158 
#16 2.159   • Installing idna (3.4)
#16 2.159   • Installing sniffio (1.3.0)
#16 2.415 
#16 2.415   TypeError
#16 2.415 
#16 2.415   unhashable type: 'Integer'
#16 2.415 
#16 2.415   at /usr/local/lib/python3.11/site-packages/urllib3/_collections.py:57 in __getitem__
#16 2.429        53│ 
#16 2.429        54│     def __getitem__(self, key):
#16 2.429        55│         # Re-insert the item, moving it to the end of the eviction line.
#16 2.429        56│         with self.lock:
#16 2.429     →  57│             item = self._container.pop(key)
#16 2.429        58│             self._container[key] = item
#16 2.429        59│             return item
#16 2.429        60│ 
#16 2.429        61│     def __setitem__(self, key, value):
#16 2.429 
#16 2.432 
#16 2.432   TypeError
#16 2.432 
#16 2.432   unhashable type: 'Integer'
#16 2.432 
#16 2.432   at /usr/local/lib/python3.11/site-packages/urllib3/_collections.py:57 in __getitem__
#16 2.441        53│ 
#16 2.441        54│     def __getitem__(self, key):
#16 2.441        55│         # Re-insert the item, moving it to the end of the eviction line.
#16 2.441        56│         with self.lock:
#16 2.441     →  57│             item = self._container.pop(key)
#16 2.441        58│             self._container[key] = item
#16 2.441        59│             return item
#16 2.441        60│ 
#16 2.441        61│     def __setitem__(self, key, value):
#16 2.441 
#16 ERROR: process "/bin/sh -c poetry config installer.max-workers 4 &&     poetry install --only main --no-root" did not complete successfully: exit code: 1
------
 > [processing_server python_builder  7/12] RUN poetry config installer.max-workers 4 &&     poetry install --only main --no-root:
2.441        53│ 
2.441        54│     def __getitem__(self, key):
2.441        55│         # Re-insert the item, moving it to the end of the eviction line.
2.441        56│         with self.lock:
2.441     →  57│             item = self._container.pop(key)
2.441        58│             self._container[key] = item
2.441        59│             return item
2.441        60│ 
2.441        61│     def __setitem__(self, key, value):
2.441 
------

This same Dockerfile worked yesterday, so I suspect that one of Poetry 1.5.1 sub-dependencies released a new version that might have broken something? Those aren’t locked for us (other than Poetry’s version itself).

I will try to see if I can track down what changed transitively recently if possible, a full output of the venv that Poetry is installed into:

#9 [python_builder  5/13] RUN pip list
#9 0.562 Package                   Version
#9 0.563 ------------------------- -----------
#9 0.563 attrs                     23.1.0
#9 0.563 build                     0.10.0
#9 0.564 CacheControl              0.12.14
#9 0.564 certifi                   2023.7.22
#9 0.565 cffi                      1.15.1
#9 0.565 charset-normalizer        3.2.0
#9 0.566 cleo                      2.0.1
#9 0.567 crashtest                 0.4.1
#9 0.567 cryptography              41.0.2
#9 0.567 distlib                   0.3.7
#9 0.568 dulwich                   0.21.5
#9 0.568 filelock                  3.12.2
#9 0.569 html5lib                  1.1
#9 0.570 idna                      3.4
#9 0.570 importlib-metadata        6.8.0
#9 0.570 installer                 0.7.0
#9 0.571 jaraco.classes            3.3.0
#9 0.571 jeepney                   0.8.0
#9 0.572 jsonschema                4.18.4
#9 0.572 jsonschema-specifications 2023.7.1
#9 0.572 keyring                   23.13.1
#9 0.573 lockfile                  0.12.2
#9 0.573 more-itertools            10.0.0
#9 0.574 msgpack                   1.0.5
#9 0.574 packaging                 23.1
#9 0.575 pexpect                   4.8.0
#9 0.576 pip                       23.1.2
#9 0.576 pkginfo                   1.9.6
#9 0.577 platformdirs              3.9.1
#9 0.577 poetry                    1.5.1
#9 0.578 poetry-core               1.6.1
#9 0.578 poetry-plugin-export      1.4.0
#9 0.579 ptyprocess                0.7.0
#9 0.579 pycparser                 2.21
#9 0.579 pyproject_hooks           1.0.0
#9 0.580 rapidfuzz                 2.15.1
#9 0.580 referencing               0.30.0
#9 0.581 requests                  2.31.0
#9 0.581 requests-toolbelt         1.0.0
#9 0.581 rpds-py                   0.9.2
#9 0.582 SecretStorage             3.3.3
#9 0.582 setuptools                65.5.1
#9 0.582 shellingham               1.5.0.post1
#9 0.583 six                       1.16.0
#9 0.583 tomlkit                   0.12.0
#9 0.583 trove-classifiers         2023.7.6
#9 0.583 urllib3                   1.26.16
#9 0.584 virtualenv                20.24.2
#9 0.584 webencodings              0.5.1
#9 0.584 wheel                     0.40.0
#9 0.585 zipp                      3.16.2