Dear All,

I've try to install rdkit using conda (anaconda2) with proxy settings.

I hack a little the conda python files to have some extra prints to see what is 
not working:

Unfortunately there is an issue:

MacBook-Pro:Github GVALMTGG$ conda install -c rdkit rdkit

ArgumentParser(prog='conda', usage=None, description=u'conda is a tool for 
managing and deploying applications, environments and packages.\n\nOptions:\n', 
version=None, formatter_class=<class 'argparse.RawDescriptionHelpFormatter'>, 
conflict_handler='error', add_help=False)

Namespace(alt_hint=False, channel=[u'rdkit'], 
channel_priority=<conda.common.constants._Null object at 0x100df6350>, 
clobber=<conda.common.constants._Null object at 0x100df6350>, cmd=u'install', 
copy=<conda.common.constants._Null object at 0x100df6350>, 
debug=<conda.common.constants._Null object at 0x100df6350>, dry_run=False, 
file=[], force=<conda.common.constants._Null object at 0x100df6350>, 
force_pscheck=False, func=<function execute at 0x1010b77d0>, 
insecure=<conda.common.constants._Null object at 0x100df6350>, 
json=<conda.common.constants._Null object at 0x100df6350>, mkdir=False, 
name=None, no_deps=False, offline=<conda.common.constants._Null object at 
0x100df6350>, override_channels=False, packages=[u'rdkit'], pinned=True, 
prefix=None, quiet=<conda.common.constants._Null object at 0x100df6350>, 
revision=None, show_channel_urls=<conda.common.constants._Null object at 
0x100df6350>, unknown=False, update_deps=<conda.common.constants._Null object 
at 0x100df6350>, use_index_cache=False, use_local=False, 
verbosity=<conda.common.constants._Null object at 0x100df6350>, 
yes=<conda.common.constants._Null object at 0x100df6350>)

install execution now

Fetching package metadata ...{'http': None, 'https': None}


Solving package specifications: .

Package plan for installation in environment /Users/GVALMTGG/anaconda2:

The following NEW packages will be INSTALLED:

    boost:      1.63.0-py27_1         rdkit

    cairo:      1.14.10-h913ea44_6

    fontconfig: 2.12.4-hffb9db1_2

    pixman:     0.34.0-hca0a616_3

    rdkit:      2017.09.3.0-py27_1    rdkit

The following packages will be UPDATED:

    conda:      4.3.30-py27h407ed3a_0       --> 4.4.8-py27_0

    pycosat:    0.6.2-py27h085d4cc_0        --> 0.6.3-py27h6c51c7e_0

Proceed ([y]/n)? y

{'http': None, 'https': None}

{'http': None, 'https': None}

{'http': None, 'https': None}

An unexpected error has occurred.

Please consider posting the following information to the

conda GitHub issue tracker at:

Current conda install:

               platform : osx-64

          conda version : 4.3.30

       conda is private : False

      conda-env version : 4.3.30

    conda-build version : 3.0.27

         python version :

       requests version : 2.18.4

       root environment : /Users/GVALMTGG/anaconda2  (writable)

    default environment : /Users/GVALMTGG/anaconda2

       envs directories : /Users/GVALMTGG/anaconda2/envs


          package cache : /Users/GVALMTGG/anaconda2/pkgs


           channel URLs :










            config file : /Users/GVALMTGG/.condarc

             netrc file : None

           offline mode : False

             user-agent : conda/4.3.30 requests/2.18.4 CPython/2.7.14 
Darwin/16.7.0 OSX/10.12.6

                UID:GID : 503:20

`$ /Users/GVALMTGG/anaconda2/bin/conda install -c rdkit rdkit`

    Traceback (most recent call last):

line 640, in conda_exception_handler

        return_value = func(*args, **kwargs)

"/Users/GVALMTGG/anaconda2/lib/python2.7/site-packages/conda/cli/", line 
140, in _main

        exit_code = args.func(args, p)

 line 81, in execute

        install(args, parser, 'install')

line 326, in install

        execute_actions(actions, index, verbose=not context.quiet)

"/Users/GVALMTGG/anaconda2/lib/python2.7/site-packages/conda/", line 
828, in execute_actions

        execute_instructions(plan, index, verbose)

line 247, in execute_instructions

        cmd(state, arg)



 line 492, in execute


 line 513, in _execute_action

        raise CondaMultiError(exceptions)

    CondaMultiError: ProxySchemeUnknown('Not supported proxy scheme',)

    ProxySchemeUnknown('Not supported proxy scheme',)

    ProxySchemeUnknown('Not supported proxy scheme',)

Any idea where it can find the proxy setting I try to remove all of them but 
it’s persist somewhere on my configuration ?

Thanks in advance,

Best regards,


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