I'm trying to install the web UI for mailman3. I am getting the following failure. Can someone help? TIA.

(venv) mailman :~$ pip install mailman-web mailman-hyperkitty
Collecting mailman-web
  Downloading mailman_web-0.0.9-py3-none-any.whl.metadata (3.2 kB)
Collecting mailman-hyperkitty
  Downloading mailman-hyperkitty-1.2.1.tar.gz (22 kB)
  Preparing metadata (setup.py) ... done
Collecting django<4.3,>=4.0 (from mailman-web)
  Downloading django-4.2.25-py3-none-any.whl.metadata (4.2 kB)
Collecting hyperkitty (from mailman-web)
  Downloading hyperkitty-1.3.12-py3-none-any.whl.metadata (3.6 kB)
Collecting postorius (from mailman-web)
  Downloading postorius-1.3.13-py3-none-any.whl.metadata (2.9 kB)
Collecting whoosh (from mailman-web)
  Downloading Whoosh-2.7.4-py2.py3-none-any.whl.metadata (3.1 kB)
Requirement already satisfied: mailman in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (3.3.10) Requirement already satisfied: requests in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (2.32.5) Requirement already satisfied: zope.interface in ./venv/lib/python3.12/site-packages (from mailman-hyperkitty) (8.0.1) Requirement already satisfied: asgiref<4,>=3.6.0 in ./venv/lib/python3.12/site-packages (from django<4.3,>=4.0->mailman-
web) (3.10.0)
Requirement already satisfied: sqlparse>=0.3.1 in ./venv/lib/python3.12/site-packages (from django<4.3,>=4.0->mailman-we
b) (0.5.3)
Collecting django-compressor>=1.3 (from hyperkitty->mailman-web)
  Downloading django_compressor-4.5.1-py2.py3-none-any.whl.metadata (5.0 kB)
Collecting django-extensions>=1.3.7 (from hyperkitty->mailman-web)
  Downloading django_extensions-4.1-py3-none-any.whl.metadata (6.1 kB)
Collecting django-gravatar2>=1.0.6 (from hyperkitty->mailman-web)
  Downloading django_gravatar2-1.4.5-py2.py3-none-any.whl.metadata (4.3 kB)
Collecting django-haystack>=2.8.0 (from hyperkitty->mailman-web)
  Downloading django_haystack-3.3.0.tar.gz (467 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 467.3/467.3 kB 3.8 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting django-q2>=1.0.0 (from hyperkitty->mailman-web)
  Downloading django_q2-1.8.0-py3-none-any.whl.metadata (9.5 kB)
Collecting django_mailman3>=1.3.13 (from hyperkitty->mailman-web)
  Downloading django_mailman3-1.3.15-py3-none-any.whl.metadata (5.4 kB)
Collecting djangorestframework>=3.0.0 (from hyperkitty->mailman-web)
  Downloading djangorestframework-3.16.1-py3-none-any.whl.metadata (11 kB)
Requirement already satisfied: flufl.lock>=4.0 in ./venv/lib/python3.12/site-packages (from hyperkitty->mailman-web) (8.
2.0)
Collecting mailmanclient>=3.3.3 (from hyperkitty->mailman-web)
  Downloading mailmanclient-3.3.5.tar.gz (89 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 89.6/89.6 kB 1.2 MB/s eta 0:00:00
  Preparing metadata (setup.py) ... done
Collecting mistune>=3.0 (from hyperkitty->mailman-web)
  Downloading mistune-3.1.4-py3-none-any.whl.metadata (1.8 kB)
Collecting networkx>=2.0 (from hyperkitty->mailman-web)
  Downloading networkx-3.5-py3-none-any.whl.metadata (6.3 kB)
Requirement already satisfied: python-dateutil>=2.0 in ./venv/lib/python3.12/site-packages (from hyperkitty->mailman-web
) (2.9.0.post0)
Collecting robot-detection>=0.3 (from hyperkitty->mailman-web)
  Downloading robot-detection-0.4.tar.gz (6.4 kB)
  Preparing metadata (setup.py) ... done
Requirement already satisfied: aiosmtpd>=1.4.3 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty)
 (1.4.6)
Requirement already satisfied: alembic!=1.7.0,>=1.6.2 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hype
rkitty) (1.17.0)
Requirement already satisfied: atpublic in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (6.0.2
)
Requirement already satisfied: authheaders>=0.16 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt
y) (0.16.3)
Requirement already satisfied: authres>=1.0.1 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty)
(1.2.0)
Requirement already satisfied: click>=8.0.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (8
.3.0)
Requirement already satisfied: dnspython>=1.14.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt
y) (2.8.0)
Requirement already satisfied: falcon>=3.1.3 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (
4.1.0)
Requirement already satisfied: flufl.bounce>=4.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt
y) (4.0)
Requirement already satisfied: flufl.i18n>=3.2 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty)
 (5.2.0)
Requirement already satisfied: gunicorn in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (23.0.
0)
Requirement already satisfied: lazr.config in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (3.
1)
Requirement already satisfied: passlib in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (1.7.4) Requirement already satisfied: sqlalchemy>=1.4.0 in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitt
y) (2.0.44)
Requirement already satisfied: zope.component in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty)
(7.0)
Requirement already satisfied: zope.configuration in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkit
ty) (7.0)
Requirement already satisfied: zope.event in ./venv/lib/python3.12/site-packages (from mailman->mailman-hyperkitty) (6.0
)
Collecting readme_renderer[md] (from postorius->mailman-web)
  Downloading readme_renderer-44.0-py3-none-any.whl.metadata (2.8 kB)
Requirement already satisfied: charset_normalizer<4,>=2 in ./venv/lib/python3.12/site-packages (from requests->mailman-h
yperkitty) (3.4.4)
Requirement already satisfied: idna<4,>=2.5 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperkitty) (
3.11)
Requirement already satisfied: urllib3<3,>=1.21.1 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperki
tty) (2.5.0)
Requirement already satisfied: certifi>=2017.4.17 in ./venv/lib/python3.12/site-packages (from requests->mailman-hyperki
tty) (2025.10.5)
Requirement already satisfied: attrs in ./venv/lib/python3.12/site-packages (from aiosmtpd>=1.4.3->mailman->mailman-hype
rkitty) (25.4.0)
Requirement already satisfied: Mako in ./venv/lib/python3.12/site-packages (from alembic!=1.7.0,>=1.6.2->mailman->mailma
n-hyperkitty) (1.3.10)
Requirement already satisfied: typing-extensions>=4.12 in ./venv/lib/python3.12/site-packages (from alembic!=1.7.0,>=1.6
.2->mailman->mailman-hyperkitty) (4.15.0)
Requirement already satisfied: dkimpy>=0.7.1 in ./venv/lib/python3.12/site-packages (from authheaders>=0.16->mailman->ma
ilman-hyperkitty) (1.1.8)
Requirement already satisfied: publicsuffix2 in ./venv/lib/python3.12/site-packages (from authheaders>=0.16->mailman->ma
ilman-hyperkitty) (2.20191221)
Collecting django-appconf>=1.0.3 (from django-compressor>=1.3->hyperkitty->mailman-web)
  Downloading django_appconf-1.1.0-py3-none-any.whl.metadata (5.2 kB)
Collecting rcssmin==1.1.2 (from django-compressor>=1.3->hyperkitty->mailman-web)   Downloading rcssmin-1.1.2-cp312-cp312-manylinux1_x86_64.whl.metadata (4.5 kB) Collecting rjsmin==1.2.2 (from django-compressor>=1.3->hyperkitty->mailman-web)   Downloading rjsmin-1.2.2-cp312-cp312-manylinux1_x86_64.whl.metadata (4.4 kB) Requirement already satisfied: packaging in ./venv/lib/python3.12/site-packages (from django-haystack>=2.8.0->hyperkitty
->mailman-web) (25.0)
Collecting django-allauth>=0.63 (from django-allauth[openid,socialaccount]>=0.63->django_mailman3>=1.3.13->hyperkitty->m
ailman-web)
  Downloading django_allauth-65.12.1.tar.gz (2.0 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.0/2.0 MB 7.1 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Collecting django-picklefield<4.0,>=3.1 (from django-q2>=1.0.0->hyperkitty->mailman-web)
  Downloading django_picklefield-3.3-py3-none-any.whl.metadata (12 kB)
Requirement already satisfied: psutil in ./venv/lib/python3.12/site-packages (from flufl.lock>=4.0->hyperkitty->mailman-
web) (7.1.0)
Requirement already satisfied: six>=1.5 in ./venv/lib/python3.12/site-packages (from python-dateutil>=2.0->hyperkitty->m
ailman-web) (1.17.0)
Requirement already satisfied: greenlet>=1 in ./venv/lib/python3.12/site-packages (from sqlalchemy>=1.4.0->mailman->mail
man-hyperkitty) (3.2.4)
Requirement already satisfied: setuptools in ./venv/lib/python3.12/site-packages (from lazr.config->mailman->mailman-hyp
erkitty) (80.9.0)
Requirement already satisfied: lazr.delegates in ./venv/lib/python3.12/site-packages (from lazr.config->mailman->mailman
-hyperkitty) (2.1.1)
Collecting nh3>=0.2.14 (from readme_renderer[md]->postorius->mailman-web)
  Downloading nh3-0.3.1-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (466 bytes) Collecting docutils>=0.21.2 (from readme_renderer[md]->postorius->mailman-web)
  Downloading docutils-0.22.2-py3-none-any.whl.metadata (15 kB)
Collecting Pygments>=2.5.1 (from readme_renderer[md]->postorius->mailman-web)
  Downloading pygments-2.19.2-py3-none-any.whl.metadata (2.5 kB)
Collecting cmarkgfm>=0.8.0 (from readme_renderer[md]->postorius->mailman-web)
  Downloading cmarkgfm-2025.10.20.tar.gz (145 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 145.8/145.8 kB 2.2 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error

  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [41 lines of output]
      Traceback (most recent call last):
        File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li
ne 353, in <module>
          main()
        File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li
ne 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/mailman/venv/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", li
ne 118, in get_requires_for_build_wheel
          return hook(config_settings)
                 ^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 331, in g
et_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=[])
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 301, in _
get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/build_meta.py", line 317, in r
un_setup
          exec(code, locals())
        File "<string>", line 5, in <module>
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/__init__.py", line 115, in set
up
          return distutils.core.setup(**attrs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/_distutils/core.py", line 148,
 in setup
          _setup_distribution = dist = klass(attrs)
                                       ^^^^^^^^^^^^
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 321, in __init_
_
          _Distribution.__init__(self, dist_attrs)
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/_distutils/dist.py", line 309,
 in __init__
          self.finalize_options()
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 784, in finaliz
e_options
          ep(self)
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/setuptools/dist.py", line 804, in _finali
ze_setup_keywords
          ep.load()(self, ep.name, value)
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 229, in cff
i_modules
          add_cffi_module(dist, cffi_module)
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 50, in add_
cffi_module
          execfile(build_file_name, mod_vars)
        File "/tmp/pip-build-env-uf_5f2aq/overlay/lib/python3.12/site-packages/cffi/setuptools_ext.py", line 26, in exec
file
          exec(code, glob, glob)
        File "src/cmarkgfm/build_cmark.py", line 21, in <module>
          with open(CMARK_DEF_H_PATH, encoding='utf-8') as fh:
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-y364_cvm/cmarkgfm_9fcba25730114ac4a08d1e
7733112a45/src/cmarkgfm/cmark.cffi.h'
      [end of output]

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

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

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

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