Unable to install on Python 3.13

[132ikl]

Hi, I think the latest commit f00ed96 might have broken compatibility for Python 3.13 (cc @Coben-3d). I haven't looked to much into it, but I get this output when trying to install:

$ sudo -u octoprint /opt/octoprint/bin/pip3 install git+https://github.com/FormerLurker/Octolapse
Collecting git+https://github.com/FormerLurker/Octolapse
  Cloning https://github.com/FormerLurker/Octolapse to /tmp/pip-req-build-xl1nmkbl
  Running command git clone --filter=blob:none --quiet https://github.com/FormerLurker/Octolapse /tmp/pip-req-build-xl1nmkbl
  Resolved https://github.com/FormerLurker/Octolapse to commit f00ed96ae0494376fd8d81f571cc9083c5470955
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [5 lines of output]
      /tmp/pip-req-build-xl1nmkbl/versioneer.py:564: SyntaxWarning: invalid escape sequence '\s'
        mo = re.search(r'=\s*"(.*)"', line)
      error in Octolapse setup command: 'install_requires' must be a string or iterable of strings containing valid project/version requirement specifiers; Expected package name at the start of dependency specifier
          .
          ^
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.

[notice] A new release of pip is available: 25.2 -> 25.3
[notice] To update, run: /opt/octoprint/bin/python -m pip install --upgrade pip
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

I am able to install the previous commit (e174a5c) without issue.

Log from successful install

sudo -u octoprint /opt/octoprint/bin/pip3 install git+https://github.com/FormerLurker/Octolapse@e174a5c08d72ea213f7e7052dfe2e9ca9089e424
Collecting git+https://github.com/FormerLurker/Octolapse@e174a5c08d72ea213f7e7052dfe2e9ca9089e424
  Cloning https://github.com/FormerLurker/Octolapse (to revision e174a5c08d72ea213f7e7052dfe2e9ca9089e424) to /tmp/pip-req-build-qylc_swz
  Running command git clone --filter=blob:none --quiet https://github.com/FormerLurker/Octolapse /tmp/pip-req-build-qylc_swz
  Running command git rev-parse -q --verify 'sha^e174a5c08d72ea213f7e7052dfe2e9ca9089e424'
  Running command git fetch -q https://github.com/FormerLurker/Octolapse e174a5c08d72ea213f7e7052dfe2e9ca9089e424
  Running command git checkout -q e174a5c08d72ea213f7e7052dfe2e9ca9089e424
  Resolved https://github.com/FormerLurker/Octolapse to commit e174a5c08d72ea213f7e7052dfe2e9ca9089e424
  Preparing metadata (setup.py) ... done
Collecting pillow<11,>=9.3 (from Octolapse==0.4.5+1.ge174a5c)
  Downloading pillow-10.4.0-cp313-cp313-manylinux_2_28_aarch64.whl.metadata (9.2 kB)
Requirement already satisfied: sarge in /opt/octoprint/lib/python3.13/site-packages (from Octolapse==0.4.5+1.ge174a5c) (0.1.7.post1)
Collecting six (from Octolapse==0.4.5+1.ge174a5c)
  Downloading six-1.17.0-py2.py3-none-any.whl.metadata (1.7 kB)
Requirement already satisfied: OctoPrint>=1.4.0 in /opt/octoprint/lib/python3.13/site-packages (from Octolapse==0.4.5+1.ge174a5c) (1.11.4)
Requirement already satisfied: psutil in /opt/octoprint/lib/python3.13/site-packages (from Octolapse==0.4.5+1.ge174a5c) (6.1.1)
Collecting file_read_backwards (from Octolapse==0.4.5+1.ge174a5c)
  Downloading file_read_backwards-3.2.0-py2.py3-none-any.whl.metadata (4.3 kB)
Requirement already satisfied: setuptools>=6.0 in /opt/octoprint/lib/python3.13/site-packages (from Octolapse==0.4.5+1.ge174a5c) (80.9.0)
Collecting awesome-slugify<1.7,>=1.6.5 (from Octolapse==0.4.5+1.ge174a5c)
  Downloading awesome-slugify-1.6.5.tar.gz (8.4 kB)
  Preparing metadata (setup.py) ... done
Requirement already satisfied: regex in /opt/octoprint/lib/python3.13/site-packages (from awesome-slugify<1.7,>=1.6.5->Octolapse==0.4.5+1.ge174a5c) (2025.11.3)
Collecting Unidecode<0.05,>=0.04.14 (from awesome-slugify<1.7,>=1.6.5->Octolapse==0.4.5+1.ge174a5c)
  Downloading Unidecode-0.04.21-py2.py3-none-any.whl.metadata (7.0 kB)
Requirement already satisfied: OctoPrint-FileCheck>=2024.11.12 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2025.7.23)
Requirement already satisfied: OctoPrint-FirmwareCheck>=2025.5.14 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2025.7.23)
Requirement already satisfied: OctoPrint-PiSupport>=2023.10.10 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2025.7.23)
Requirement already satisfied: argon2-cffi>=23.1.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (25.1.0)
Requirement already satisfied: Babel<2.17,>=2.16 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.16.0)
Requirement already satisfied: cachelib<0.14,>=0.13.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.13.0)
Requirement already satisfied: Click!=8.2.0,<8.3,>=8.1.8 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (8.2.1)
Requirement already satisfied: colorlog<7,>=6.9.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (6.10.1)
Requirement already satisfied: emoji<3,>=2.14.1 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.15.0)
Requirement already satisfied: feedparser<7,>=6.0.11 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (6.0.12)
Requirement already satisfied: filetype<2,>=1.2.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.2.0)
Requirement already satisfied: Flask-Assets<3,>=2.1.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.1.0)
Requirement already satisfied: Flask-Babel<5,>=4.0.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.0.0)
Requirement already satisfied: Flask-Login<0.7,>=0.6.3 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.6.3)
Requirement already satisfied: Flask-Limiter<3.9,>=3.8 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.8.0)
Requirement already satisfied: flask<3.1,>=3.0.3 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.0.3)
Requirement already satisfied: frozendict<3,>=2.4.6 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.4.6)
Requirement already satisfied: limits<5 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.8.0)
Requirement already satisfied: markdown<3.8,>=3.7 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.7)
Requirement already satisfied: netaddr<1.4,>=1.3.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.3.0)
Requirement already satisfied: netifaces<0.12,>=0.11.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.11.0)
Requirement already satisfied: packaging in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (24.2)
Requirement already satisfied: libpass<2,>=1.8.1 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.9.3)
Requirement already satisfied: pathvalidate<4,>=3.2.1 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.3.1)
Requirement already satisfied: pydantic<3,>=2.10.6 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.12.4)
Requirement already satisfied: pylru<2,>=1.2.1 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.2.1)
Requirement already satisfied: pyserial<4,>=3.5 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.5)
Requirement already satisfied: pytz in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2025.2)
Requirement already satisfied: PyYAML<7,>=6.0.2 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (6.0.3)
Requirement already satisfied: requests<3,>=2.32.3 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.32.5)
Requirement already satisfied: semantic_version<3,>=2.10.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.10.0)
Requirement already satisfied: sentry-sdk<3,>=2.20.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.44.0)
Requirement already satisfied: tornado<6.6,>=6.5 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (6.5.2)
Requirement already satisfied: watchdog<5,>=4.0.2 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.0.2)
Requirement already satisfied: websocket-client<1.9,>=1.8.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.8.0)
Requirement already satisfied: werkzeug<3.1,>=3.0.6 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.0.6)
Requirement already satisfied: wrapt<1.18,>=1.17.2 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.17.3)
Requirement already satisfied: zeroconf<0.137,>=0.136.2 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.136.2)
Requirement already satisfied: zipstream-ng<2.0.0,>=1.8.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.9.0)
Requirement already satisfied: blinker<1.9.0,>=1.8.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.8.2)
Requirement already satisfied: more-itertools>=10.5.0 in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (10.8.0)
Requirement already satisfied: future in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.0.0)
Requirement already satisfied: wheel in /opt/octoprint/lib/python3.13/site-packages (from OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.45.1)
Requirement already satisfied: sgmllib3k in /opt/octoprint/lib/python3.13/site-packages (from feedparser<7,>=6.0.11->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.0.0)
Requirement already satisfied: Jinja2>=3.1.2 in /opt/octoprint/lib/python3.13/site-packages (from flask<3.1,>=3.0.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.1.6)
Requirement already satisfied: itsdangerous>=2.1.2 in /opt/octoprint/lib/python3.13/site-packages (from flask<3.1,>=3.0.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.2.0)
Requirement already satisfied: webassets>=2.0 in /opt/octoprint/lib/python3.13/site-packages (from Flask-Assets<3,>=2.1.0->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.0.0)
Requirement already satisfied: ordered-set<5,>4 in /opt/octoprint/lib/python3.13/site-packages (from Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.1.0)
Requirement already satisfied: rich<14,>=12 in /opt/octoprint/lib/python3.13/site-packages (from Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (13.9.4)
Requirement already satisfied: typing-extensions>=4 in /opt/octoprint/lib/python3.13/site-packages (from Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.15.0)
Requirement already satisfied: deprecated>=1.2 in /opt/octoprint/lib/python3.13/site-packages (from limits<5->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (1.3.1)
Requirement already satisfied: annotated-types>=0.6.0 in /opt/octoprint/lib/python3.13/site-packages (from pydantic<3,>=2.10.6->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.7.0)
Requirement already satisfied: pydantic-core==2.41.5 in /opt/octoprint/lib/python3.13/site-packages (from pydantic<3,>=2.10.6->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.41.5)
Requirement already satisfied: typing-inspection>=0.4.2 in /opt/octoprint/lib/python3.13/site-packages (from pydantic<3,>=2.10.6->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.4.2)
Requirement already satisfied: charset_normalizer<4,>=2 in /opt/octoprint/lib/python3.13/site-packages (from requests<3,>=2.32.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.4.4)
Requirement already satisfied: idna<4,>=2.5 in /opt/octoprint/lib/python3.13/site-packages (from requests<3,>=2.32.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.11)
Requirement already satisfied: urllib3<3,>=1.21.1 in /opt/octoprint/lib/python3.13/site-packages (from requests<3,>=2.32.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.5.0)
Requirement already satisfied: certifi>=2017.4.17 in /opt/octoprint/lib/python3.13/site-packages (from requests<3,>=2.32.3->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2025.10.5)
Requirement already satisfied: markdown-it-py>=2.2.0 in /opt/octoprint/lib/python3.13/site-packages (from rich<14,>=12->Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (4.0.0)
Requirement already satisfied: pygments<3.0.0,>=2.13.0 in /opt/octoprint/lib/python3.13/site-packages (from rich<14,>=12->Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.19.2)
Requirement already satisfied: MarkupSafe>=2.1.1 in /opt/octoprint/lib/python3.13/site-packages (from werkzeug<3.1,>=3.0.6->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (3.0.3)
Requirement already satisfied: ifaddr>=0.1.7 in /opt/octoprint/lib/python3.13/site-packages (from zeroconf<0.137,>=0.136.2->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.2.0)
Requirement already satisfied: argon2-cffi-bindings in /opt/octoprint/lib/python3.13/site-packages (from argon2-cffi>=23.1.0->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (25.1.0)
Requirement already satisfied: mdurl~=0.1 in /opt/octoprint/lib/python3.13/site-packages (from markdown-it-py>=2.2.0->rich<14,>=12->Flask-Limiter<3.9,>=3.8->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (0.1.2)
Requirement already satisfied: zope-dottedname>=6.0 in /opt/octoprint/lib/python3.13/site-packages (from webassets>=2.0->Flask-Assets<3,>=2.1.0->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (7.0)
Requirement already satisfied: cffi>=1.0.1 in /opt/octoprint/lib/python3.13/site-packages (from argon2-cffi-bindings->argon2-cffi>=23.1.0->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.0.0)
Requirement already satisfied: pycparser in /opt/octoprint/lib/python3.13/site-packages (from cffi>=1.0.1->argon2-cffi-bindings->argon2-cffi>=23.1.0->OctoPrint>=1.4.0->Octolapse==0.4.5+1.ge174a5c) (2.23)
Downloading pillow-10.4.0-cp313-cp313-manylinux_2_28_aarch64.whl (4.4 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 4.4/4.4 MB 2.9 MB/s  0:00:01
Downloading Unidecode-0.04.21-py2.py3-none-any.whl (228 kB)
Downloading file_read_backwards-3.2.0-py2.py3-none-any.whl (7.9 kB)
Downloading six-1.17.0-py2.py3-none-any.whl (11 kB)
Building wheels for collected packages: Octolapse, awesome-slugify
  DEPRECATION: Building 'Octolapse' using the legacy setup.py bdist_wheel mechanism, which will be removed in a future version. pip 25.3 will enforce this behaviour change. A possible replacement is to use the standardized build interface by setting the `--use-pep517` option, (possibly combined with `--no-build-isolation`), or adding a `pyproject.toml` file to the source tree of 'Octolapse'. Discussion can be found at https://github.com/pypa/pip/issues/6334
  Building wheel for Octolapse (setup.py) ... done
  Created wheel for Octolapse: filename=octolapse-0.4.5+1.ge174a5c-cp313-cp313-linux_aarch64.whl size=3088450 sha256=df8bdc25d9486b66cc32b6f27b4ae2a0f7145a2fa4502fe90c3ab299ac7a113a
  Stored in directory: /var/lib/octoprint/.cache/pip/wheels/82/23/da/89e8205ce5688eccda8cd654e4265e3e02e4e757a0658a8420
  DEPRECATION: Building 'awesome-slugify' using the legacy setup.py bdist_wheel mechanism, which will be removed in a future version. pip 25.3 will enforce this behaviour change. A possible replacement is to use the standardized build interface by setting the `--use-pep517` option, (possibly combined with `--no-build-isolation`), or adding a `pyproject.toml` file to the source tree of 'awesome-slugify'. Discussion can be found at https://github.com/pypa/pip/issues/6334
  Building wheel for awesome-slugify (setup.py) ... done
  Created wheel for awesome-slugify: filename=awesome_slugify-1.6.5-py3-none-any.whl size=8380 sha256=122feb9b6a53c3352fa5d88499e30f78540261ad43ec3ad5726e5b36087830f6
  Stored in directory: /var/lib/octoprint/.cache/pip/wheels/f6/8d/90/0b26ee7a2a7b6e3bc44fc33dd6a9be2bf9ddc0530969e8460c
Successfully built Octolapse awesome-slugify
Installing collected packages: Unidecode, file_read_backwards, six, pillow, awesome-slugify, Octolapse
  Attempting uninstall: Unidecode
    Found existing installation: Unidecode 1.4.0
    Uninstalling Unidecode-1.4.0:
      Successfully uninstalled Unidecode-1.4.0
Successfully installed Octolapse-0.4.5+1.ge174a5c Unidecode-0.4.21 awesome-slugify-1.6.5 file_read_backwards-3.2.0 pillow-10.4.0 six-1.17.0

[notice] A new release of pip is available: 25.2 -> 25.3
[notice] To update, run: /opt/octoprint/bin/python -m pip install --upgrade pip

Python version: 3.13.7
OS: Arch Linux ARM (aarch64)

/opt/octoprint/bin/python --version
Python 3.13.7

[vlacsap]

Same thing on raspbery Pi 2w

OctoPrint 1.11.4 Python 3.11.2 OctoPi* 1.1.0 (build 2025.11.04.125341)

Installation de l'extension "Octolapse" depuis https://github.com/FormerLurker/Octolapse/archive/master.zip...
/opt/octopi/oprint/bin/python -m pip --disable-pip-version-check install file:///tmp/tmp7dq8qwxi/Octolapse-master.zip --no-cache-dir
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Processing /tmp/tmp7dq8qwxi/Octolapse-master.zip
Preparing metadata (setup.py): started
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [1 lines of output]
error in Octolapse setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers; Parse error at "'.'": Expected W:(0-9A-Za-z)
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
Preparing metadata (setup.py): finished with status 'error'
Erreur!
Could not parse output from pip, see plugin_pluginmanager_console.log for generated output

[ajscam]

/opt/octopi/oprint/bin/python --version
Python 3.11.2

Same. Problem is with requirements.txt file

[systemsNinja]

+1 on this issue

[jradwan]

Running into this as well, Octoprint 1.11.5 with Python 3.13.5 on Debian trixie (using the OctoPi nightly build from back in October). It actually shows up as "incompatible" in the Plugin Manager (due to Python 3.13 I guess?) so maybe it's not supposed to work but seems like the problem is due to the deprecation of disutils?

2026-01-20 13:36:10,830   /opt/octopi/oprint/bin/python -m pip --disable-pip-version-check install file:///tmp/tmpu8gixwfh/Octolapse-0.4.5.zip --no-cache-dir --use-pep517 --no-build-isolation
2026-01-20 13:36:13,077 > Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
2026-01-20 13:36:13,077 > Processing /tmp/tmpu8gixwfh/Octolapse-0.4.5.zip
2026-01-20 13:36:13,078 > Preparing metadata (pyproject.toml): started
2026-01-20 13:36:13,623 ! error: subprocess-exited-with-error
2026-01-20 13:36:13,624 !
2026-01-20 13:36:13,624 ! × Preparing metadata (pyproject.toml) did not run successfully.                                           
2026-01-20 13:36:13,624 ! ¦ exit code: 1
2026-01-20 13:36:13,624 ! ?-> [20 lines of output]
2026-01-20 13:36:13,625 ! Traceback (most recent call last):
2026-01-20 13:36:13,625 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
2026-01-20 13:36:13,625 ! main()
2026-01-20 13:36:13,625 ! ~~~~^^
2026-01-20 13:36:13,625 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
2026-01-20 13:36:13,625 ! json_out["return_val"] = hook(**hook_input["kwargs"])
2026-01-20 13:36:13,625 ! ~~~~^^^^^^^^^^^^^^^^^^^^^^^^                                                                              
2026-01-20 13:36:13,625 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 175, in prepare_metadata_for_build_wheel
2026-01-20 13:36:13,625 ! return hook(metadata_directory, config_settings)
2026-01-20 13:36:13,626 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/setuptools/build_meta.py", line 374, in prepare_metadata_for_build_wheel
2026-01-20 13:36:13,626 ! self.run_setup()
2026-01-20 13:36:13,626 ! ~~~~~~~~~~~~~~^^
2026-01-20 13:36:13,626 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/setuptools/build_meta.py", line 512, in run_setup   
2026-01-20 13:36:13,626 ! super().run_setup(setup_script=setup_script)
2026-01-20 13:36:13,626 ! ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-01-20 13:36:13,626 ! File "/opt/octopi/oprint/lib/python3.13/site-packages/setuptools/build_meta.py", line 317, in run_setup   
2026-01-20 13:36:13,626 ! exec(code, locals())
2026-01-20 13:36:13,626 ! ~~~~^^^^^^^^^^^^^^^^
2026-01-20 13:36:13,626 ! File "<string>", line 6, in <module>
2026-01-20 13:36:13,626 ! ModuleNotFoundError: No module named 'distutils.msvccompiler'
2026-01-20 13:36:13,626 ! [end of output]
2026-01-20 13:36:13,626 !
2026-01-20 13:36:13,626 ! note: This error originates from a subprocess, and is likely not a problem with pip.
2026-01-20 13:36:13,626 ! error: metadata-generation-failed
2026-01-20 13:36:13,627 !
2026-01-20 13:36:13,627 ! × Encountered error while generating package metadata.
2026-01-20 13:36:13,627 ! ?-> See above for output.
2026-01-20 13:36:13,627 !
2026-01-20 13:36:13,627 ! note: This is an issue with the package mentioned above, not pip.
2026-01-20 13:36:13,627 ! hint: See above for details.
2026-01-20 13:36:13,628 > Preparing metadata (pyproject.toml): finished with status 'error'

[sebastiendarocha]

I had the same ModuleNotFoundError: No module named 'distutils.msvccompiler' error.

It seems being a problem with setuptools using the deprecated distutils package.

Launching octoprint this way helped to install octolapse using the plugin manager :

SETUPTOOLS_USE_DISTUTILS=stdlib octoprint serve

[jradwan]

Where did you make that change?

[sebastiendarocha]

I'm not using OctoPi, but I guess you should change this file : /etc/systemd/system/octoprint.service

Find the line :

ExecStart=/opt/octopi/oprint/bin/octoprint serve --host=${HOST} --port=${PORT}

Add after it :

Environment="SETUPTOOLS_USE_DISTUTILS=stdlib"

[jradwan]

I was in the right area, thanks for the nudge.

But I guess that won't work for OctoPi, maybe due to the virtual Python environment? I have these lines in the octoprint.service file now:

ExecStart=/opt/octopi/oprint/bin/octoprint serve --host=${HOST} --port=${PORT}
Environment="SETUPTOOLS_USE_DISTUTILS=stdlib"

But then when I go into Octoprint Plugin Manager I see this message:

The pip command could not be found or does not work correctly for this installation of OctoPrint - please consult the log file for details and if necessary configure it manually. No installation and uninstallation of plugin packages is possible while pip is unavailable.

[killermonk]

This worked for my Octopi setup. I added the Environment a few lines up under the other Environment entries in the [Service] section.

You then need to restart the service. I don't know if restarting from the UI will work. You can either restart the whole rpi, or use the following two commands to restart it manually:

sudo systemctl daemon-reload
sudo service octoprint restart

[jradwan]

Yeah that's what I did. I also tried moving the new Environment line above the ExecStart line but whenever I have that line in the file, I get the 'pip not found';

[Unit]
Description=The snappy web interface for your 3D printer
After=network-online.target
Wants=network-online.target

[Service]
Environment="HOST=127.0.0.1"
Environment="PORT=5000"
Environment="REQUESTS_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt"
Environment="LG_WD=/tmp"
Environment="SETUPTOOLS_USE_DISTUTILS=stdlib"
Type=simple
User=1000
ExecStart=/opt/octopi/oprint/bin/octoprint serve --host=${HOST} --port=${PORT}

[Install]
WantedBy=multi-user.target

OctoPrint 1.11.6
Python 3.13.5
OctoPi 1.2.0
on trixie using a nightly octopi build from October 2025

[killermonk]

Yeah, I think this might be your python version. I'm using python 3.11, so distutils is deprecated but not removed. However, it looks like it was removed completely starting in 3.12: https://docs.python.org/3.12/library/distutils.html

You might be able to manually pip install setuptools to get the compatibility to work.

[jradwan]

I had tried that in the virtual environment already ... says it's already installed.

21:06:54 /opt/octopi/oprint:$ source bin/activate
(oprint) 21:06:57 /opt/octopi/oprint:$ pip install setuptools
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Requirement already satisfied: setuptools in ./lib/python3.13/site-packages (80.9.0)

[notice] A new release of pip is available: 25.2 -> 26.0
[notice] To update, run: pip install --upgrade pip