Unable to install: Issues in installing cairo dependency

[xobs]

The documentation says that to install, one must run pip install sphinxcontrib-wavedrom. However, that is causing errors:

[6:19:58 pm] ~/Documents/Code/doctest> pip install sphinxcontrib-wavedrom
Collecting sphinxcontrib-wavedrom
  Using cached https://files.pythonhosted.org/packages/5b/ee/7f8a4cf6a590fcf060ca4bde188cb5afaade80e1155e93d9a32545272127/sphinxcontrib_wavedrom-2.0.0-py3-none-any.whl

Requirement already satisfied: Sphinx>=1.8 in c:\python37\lib\site-packages (from sphinxcontrib-wavedrom) (2.2.0)
Requirement already satisfied: xcffib; python_version >= "3.3" in c:\python37\lib\site-packages (from sphinxcontrib-wavedrom) (0.8.1)
Collecting wavedrom>=0.1 (from sphinxcontrib-wavedrom)
  Using cached https://files.pythonhosted.org/packages/07/e2/7e71626b60e5549d0dd2d07dd15569d71dbda4d648fc77293aa528dc6c49/wavedrom-2.0.3.post2.tar.gz
Collecting cairosvg>=2; python_version >= "3.3" (from sphinxcontrib-wavedrom)
  Using cached https://files.pythonhosted.org/packages/8e/3a/762f9272c20db092f4d537aaf364dd0770ecf8f7101b58c4e933e99ee2f6/CairoSVG-2.4.2-py3-none-any.whl
Requirement already satisfied: sphinxcontrib-htmlhelp in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.0.2)
Requirement already satisfied: setuptools in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (40.8.0)
Requirement already satisfied: sphinxcontrib-jsmath in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.0.1)
Requirement already satisfied: packaging in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (19.1)
Requirement already satisfied: imagesize in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.1.0)
Requirement already satisfied: sphinxcontrib-devhelp in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.0.1)
Requirement already satisfied: Pygments>=2.0 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (2.4.2)
Requirement already satisfied: sphinxcontrib-applehelp in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.0.1)
Requirement already satisfied: alabaster<0.8,>=0.7 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (0.7.12)
Requirement already satisfied: babel!=2.0,>=1.3 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (2.7.0)
Requirement already satisfied: requests>=2.5.0 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (2.22.0)
Requirement already satisfied: Jinja2>=2.3 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (2.10.1)
Requirement already satisfied: snowballstemmer>=1.1 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.9.1)
Requirement already satisfied: sphinxcontrib-qthelp in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.0.2)
Requirement already satisfied: docutils>=0.12 in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (0.15.2)
Requirement already satisfied: colorama>=0.3.5; sys_platform == "win32" in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (0.3.9)
Requirement already satisfied: sphinxcontrib-serializinghtml in c:\python37\lib\site-packages (from Sphinx>=1.8->sphinxcontrib-wavedrom) (1.1.3)
Requirement already satisfied: six in c:\python37\lib\site-packages (from xcffib; python_version >= "3.3"->sphinxcontrib-wavedrom) (1.11.0)
Requirement already satisfied: cffi>=1.1.0 in c:\python37\lib\site-packages (from xcffib; python_version >= "3.3"->sphinxcontrib-wavedrom) (1.12.3)
Collecting svgwrite (from wavedrom>=0.1->sphinxcontrib-wavedrom)
  Using cached https://files.pythonhosted.org/packages/4f/2e/f36cfec1da6162055b884e6366074cff18475a9538559ceae0c0bc58e186/svgwrite-1.3.1-py2.py3-none-any.whl
Collecting attrdict (from wavedrom>=0.1->sphinxcontrib-wavedrom)
  Using cached https://files.pythonhosted.org/packages/ef/97/28fe7e68bc7adfce67d4339756e85e9fcf3c6fd7f0c0781695352b70472c/attrdict-2.0.1-py2.py3-none-any.whl
Requirement already satisfied: pillow in c:\python37\lib\site-packages (from cairosvg>=2; python_version >= "3.3"->sphinxcontrib-wavedrom) (6.1.0)
Requirement already satisfied: defusedxml in c:\python37\lib\site-packages (from cairosvg>=2; python_version >= "3.3"->sphinxcontrib-wavedrom) (0.6.0)
Requirement already satisfied: tinycss2 in c:\python37\lib\site-packages (from cairosvg>=2; python_version >= "3.3"->sphinxcontrib-wavedrom) (1.0.2)
Collecting cairocffi (from cairosvg>=2; python_version >= "3.3"->sphinxcontrib-wavedrom)
  Using cached https://files.pythonhosted.org/packages/f7/99/b3a2c6393563ccbe081ffcceb359ec27a6227792c5169604c1bd8128031a/cairocffi-1.1.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\smcro\AppData\Local\Temp\pip-install-7h7b4601\cairocffi\setup.py", line 13, in <module>
        'cairocffi/ffi_build.py:ffi_pixbuf']
      File "c:\python37\lib\site-packages\setuptools\__init__.py", line 145, in setup
        return distutils.core.setup(**attrs)
      File "c:\python37\lib\distutils\core.py", line 108, in setup
        _setup_distribution = dist = klass(attrs)
      File "c:\python37\lib\site-packages\setuptools\dist.py", line 447, in __init__
        k: v for k, v in attrs.items()
      File "c:\python37\lib\distutils\dist.py", line 292, in __init__
        self.finalize_options()
      File "c:\python37\lib\site-packages\setuptools\dist.py", line 739, in finalize_options
        ep.load()(self, ep.name, value)
      File "c:\python37\lib\site-packages\cffi\setuptools_ext.py", line 217, in cffi_modules
        add_cffi_module(dist, cffi_module)
      File "c:\python37\lib\site-packages\cffi\setuptools_ext.py", line 49, in add_cffi_module
        execfile(build_file_name, mod_vars)
      File "c:\python37\lib\site-packages\cffi\setuptools_ext.py", line 25, in execfile
        exec(code, glob, glob)
      File "cairocffi/ffi_build.py", line 32, in <module>
        from xcffib.ffi_build import ffi as xcb_ffi
      File "c:\python37\lib\site-packages\xcffib\__init__.py", line 38, in <module>
        lib = ffi.dlopen(soname)
    OSError: cannot load library 'libxcb.dll': error 0x7e

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\smcro\AppData\Local\Temp\pip-install-7h7b4601\cairocffi\
You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
[6:20:07 pm] ~/Documents/Code/doctest>

Wavedrom seems to have additional requirements that are not mentioned here, and their installation method is not documented.

[bavovanachte]

Did you manage to resolve the issue? If so, how? Cairosvg seems to be in the dependencies, is there an issue with a specific version of it?

[xobs]

I just removed it from the dependency list, and it installs just fine.

I think it's an optional dependency used only when generating pdf files.

[ghost]

It seems that I have the same issue :(
After try to install the sphinx-wavedrom with this command:
py -3.7 -m pip install sphinxcontrib-wavedrom -U

I obtain this error:

    Running setup.py install for cairocffi ... error
    ERROR: Command errored out with exit status 1:
     command: 'C:\Python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\lienv\\AppData\\Local\\Temp\\pip-install-w3icn51h\\cairocffi\\setup.py'"'"'; __file__='"'"'C:\\Users\\lienv\\AppData\\Local\\Temp\\pip-install-w3icn51h\\cairocffi\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\lienv\AppData\Local\Temp\pip-record-3str3rtn\install-record.txt' --single-version-externally-managed --compile
         cwd: C:\Users\lienv\AppData\Local\Temp\pip-install-w3icn51h\cairocffi\
    Complete output (25 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\lienv\AppData\Local\Temp\pip-install-w3icn51h\cairocffi\setup.py", line 13, in <module>
        'cairocffi/ffi_build.py:ffi_pixbuf']
      File "C:\Python37\lib\site-packages\setuptools\__init__.py", line 143, in setup
        return distutils.core.setup(**attrs)
      File "C:\Python37\lib\distutils\core.py", line 108, in setup
        _setup_distribution = dist = klass(attrs)
      File "C:\Python37\lib\site-packages\setuptools\dist.py", line 442, in __init__
        k: v for k, v in attrs.items()
      File "C:\Python37\lib\distutils\dist.py", line 292, in __init__
        self.finalize_options()
      File "C:\Python37\lib\site-packages\setuptools\dist.py", line 601, in finalize_options
        ep.load()(self, ep.name, value)
      File "C:\Python37\lib\site-packages\cffi\setuptools_ext.py", line 217, in cffi_modules
        add_cffi_module(dist, cffi_module)
      File "C:\Python37\lib\site-packages\cffi\setuptools_ext.py", line 49, in add_cffi_module
        execfile(build_file_name, mod_vars)
      File "C:\Python37\lib\site-packages\cffi\setuptools_ext.py", line 25, in execfile
        exec(code, glob, glob)
      File "cairocffi/ffi_build.py", line 32, in <module>
        from xcffib.ffi_build import ffi as xcb_ffi
      File "C:\Python37\lib\site-packages\xcffib\__init__.py", line 38, in <module>
        lib = ffi.dlopen(soname)
    OSError: cannot load library 'libxcb.dll': error 0x7e
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\lienv\\AppData\\Local\\Temp\\pip-install-w3icn51h\\cairocffi\\setup.py'"'"'; __file__='"'"'C:\\Users\\lienv\\AppData\\Local\\Temp\\pip-install-w3icn51h\\cairocffi\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\lienv\AppData\Local\Temp\pip-record-3str3rtn\install-record.txt' --single-version-externally-managed --compile Check the logs for full command output.

[bavovanachte]

I could be misinterpreting, but this seems like an issue with cairo or the fact that this specific xcb library is not installed locally, not this plugin. I cannot remove it from the dependencies, as pdf generation requires it.

If the issue persists, I would suggest opening an issue in the cairo project instead. I'll close this issue for now to keep the issue list clean. Feel free to reopen if I missed something.