Error while installing Python-saml package in windows

Question

I would like to use python-saml for sso integration with flask web app. while I am trying to install python-saml package using pip install python-saml, I am getting the below error message.

(myvenv) C:\Users\sekar>pip install python3-saml==1.9.0
Collecting python3-saml==1.9.0
  Using cached python3_saml-1.9.0-py3-none-any.whl (72 kB)
Collecting xmlsec>=0.6.0
  Using cached xmlsec-1.3.3.tar.gz (29 kB)
Building wheels for collected packages: xmlsec
  Building wheel for xmlsec (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Users\sekar\AppData\Local\conda\conda\envs\myvenv\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\setup.py'"'"'; __file__='"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\sekar\AppData\Local\Temp\16\pip-wheel-39e4ydgb'
       cwd: C:\Users\sekar\AppData\Local\Temp\16\pip-install-9x0le85b\xmlsec\
  Complete output (5 lines):
  running bdist_wheel
  running build
  running build_ext
  error: HTTP Error 404: The specified blob does not exist.
  Retrieving "https://ci.appveyor.com/api/buildjobs/hij3a6776pdv2007/artifacts/libxml2-2.9.4.win64.zip" to "build/extra\libxml2-2.9.4.win64.zip"
  ----------------------------------------
  ERROR: Failed building wheel for xmlsec
  Running setup.py clean for xmlsec
Failed to build xmlsec
Installing collected packages: xmlsec, python3-saml
    Running setup.py install for xmlsec ... error
    ERROR: Command errored out with exit status 1:
     command: 'C:\Users\sekar\AppData\Local\conda\conda\envs\myvenv\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\setup.py'"'"'; __file__='"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\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\sekar\AppData\Local\Temp\16\pip-record-l_q25m6k\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\sekar\AppData\Local\conda\conda\envs\myvenv\Include\xmlsec'
         cwd: C:\Users\sekar\AppData\Local\Temp\16\pip-install-9x0le85b\xmlsec\
    Complete output (5 lines):
    running install
    running build
    running build_ext
    error: HTTP Error 404: The specified blob does not exist.
    Retrieving "https://ci.appveyor.com/api/buildjobs/hij3a6776pdv2007/artifacts/libxml2-2.9.4.win64.zip" to "build/extra\libxml2-2.9.4.win64.zip"
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\sekar\AppData\Local\conda\conda\envs\myvenv\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\setup.py'"'"'; __file__='"'"'C:\\Users\\sekar\\AppData\\Local\\Temp\\16\\pip-install-9x0le85b\\xmlsec\\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\sekar\AppData\Local\Temp\16\pip-record-l_q25m6k\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\sekar\AppData\Local\conda\conda\envs\myvenv\Include\xmlsec' Check the logs for full command output.

I tried with conda install python-saml, same error also they stopped this package 2 years before. even I tried python3-saml

the core issue is in xmlsec package..

is there any conda channels or PYPI provide this package?

Answer 1

Update

Since version 1.3.7, prebuilt wheels of xmlsec for Windows are published on PyPI, so you shouldn't experience this issue anymore.

Original answer

I have rebuilt xmlsec windows wheels and uploaded them to the releases page of my fork. To install, first install xmlsec passing the additional PyPI index:

$ pip install xmlsec --extra-index-url=https://hoefling.io/pypi

The added index just proxies install request to Github releases.

Now install python3-saml:

$ pip install python3-saml

(Alternative) Selecting the dist manually

You can manually find the wheel matching your Python installation from the releases page and install it using a direct link, e.g.

$ python -c "from pip._internal.pep425tags import get_supported; print(*get_supported()[0], sep='-')"
cp37-cp37m-win_amd64
# the matching wheel is thus xmlsec-1.3.6.post1-cp37-cp37m-win_amd64.whl
$ pip install https://github.com/hoefling/xmlsec/releases/download/1.3.6.post1/xmlsec-1.3.6.post1-cp37-cp37m-win_amd64.whl

(Optional) Verify xmlsec works by invoking the tests

I have executed tests against all built wheels (check out this job log on Appveyor), but you can also run the tests locally to verify xmlsec installation is working:

$ git clone https://github.com/mehcode/python-xmlsec.git && cd python-xmlsec
$ pip install pytest
$ pytest tests/

Answer 2

Never used python-saml here... However, while searching this error, I found these GitHub issues: Issue 1 and Issue 2

Both of them talk about a problem with dm.xmlsec.binding.

Best,
Felipe