Cryptography: Can't install cryptography on alpine:3.8

[gliush]

Hi.

I'm following instructions from the installation page, and get an error with alpine:3.8 and python2

FROM alpine:3.8

RUN apk update && apk upgrade
RUN apk add gcc musl-dev python-dev libffi-dev openssl-dev py2-pip
RUN pip install cryptography

And the installation process fails with

/ # pip install cryptography
Collecting cryptography
  Downloading https://files.pythonhosted.org/packages/69/ed/5e97b7f54237a9e4e6291b6e52173372b7fa45ca730d36ea90b790c0059a/cryptography-2.5.tar.gz (487kB)
    100% |████████████████████████████████| 491kB 1.7MB/s
  Could not find a version that satisfies the requirement cffi!=1.11.3,>=1.8 (from versions: )
No matching distribution found for cffi!=1.11.3,>=1.8

Manual installation of cffi doesn't help.

It fails for versions 2.5, 2.4 and works well for 2.3:

pip install cryptography==2.3
...
Successfully installed asn1crypto-0.24.0 cffi-1.11.5 cryptography-2.3 enum34-1.1.6 idna-2.8 ipaddress-1.0.22 pycparser-2.19 six-1.12.0

[alex]

What version of pip are you using?

[gliush]

I use the default pip that is available on the newest alpine:3.8.

/ # pip --version
pip 10.0.1 from /usr/lib/python2.7/site-packages/pip (python 2.7)

Heh, I forgot that I can upgrade the pip with the help of the pip itself:

pip install --upgrade pip

And after that the cryptography is installed without problems.
Sorry for the disturbance! :)

I hope the ticket will help if anybody else will search for the solution.

[neilharia7]

Hi I'm getting the same error

    FROM alpine:3.8
    RUN apk update && apk upgrade
    RUN apk add gcc musl-dev python-dev libffi-dev openssl-dev py2-pip
    RUN pip install --upgrade pip
    RUN pip install cryptography==2.3

`error: command 'gcc' failed with exit status 4

ERROR: Command errored out with exit status 1: /usr/bin/python2 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-EgqQlO/cryptography/setup.py'"'"'; __file__='"'"'/tmp/pip-install-EgqQlO/cryptography/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-42ztgE/install-record.txt --single-version-externally-managed --compile Check the logs for full command output.`

Even if I don't mention the cryptography version, I get the same error.