Install anaconda library from a local source

I have been trying to install pymc for some time on a Windows PC behind a very complicated proxy; effectively making this an installation on a computer not connected to the internet. I have tried - unsuccessfully - to set a proxy in the condarc file but I still get error messages

conda install -c https://conda.binstar.org/pymc pymc Fetching package metadata: SSL verification error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)

Answers


To solve this, you need to download the tar file (even if using Windows) that the installer is trying to fetch and then use offline mode:

Use this command which will error, to determine the file to be downloaded:

>conda install -c https://conda.binstar.org/pymc pymc
Fetching package metadata: SSL verification error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645)
....
Solving package specifications: ......................

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    pymc-2.3.5                 |      np110py35_0         402 KB  defaults

The following NEW packages will be INSTALLED:

    pymc: 2.3.5-np110py35_0 defaults

Proceed ([y]/n)? y

Fetching packages ...
Could not connect to https://repo.continuum.io/pkgs/free/win-64/pymc-2.3.5-np110py35_0.tar.bz2
... [error message continues]...

Now download the tar file mentioned in the error message:

https://repo.continuum.io/pkgs/free/win-64/pymc-2.3.5-np110py35_0.tar.bz2

And then run this command with the path to the tar file:

>conda install --offline C:\pymc-2.3.5-np110py35_0.tar.bz2

Just of notes: "-c conda-forge" might be handy for some other packages. For example:

conda install -c conda-forge python-levenshtein

Adding to the solution above. Anyone met "SSL verification error" can just turn the verification step off temporarily in ~/.condarc

channels:
  - defaults
ssl_verify: true

In this way, you could install from your local hub.


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