Installation fails on Void Linux

[Vintodrimmer]

Good day,

I'm running:

• Python 3.6.5
• pip 9.0.3 (problem persists with v10.0.1)
• setuptools 39.1.0
• cffi 1.11.5
• gcc 7.3.0
• LibreSSL 2.7.2

I'm trying to install cryptography using pip install --user cryptography but get this log with following errors:

    Running setup.py install for cryptography: finished with status 'error'
    gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -mtune=generic -O2 -pipe -g -D_FORTIFY_SOURCE=2 -mtune=generic -O2 -pipe -g -fPIC -I/usr/include/python3.6m -c build/temp.linux-x86_64-3.6/_openssl.c -o build/temp.linux-x86_64-3.6/build/temp.linux-x86_64-3.6/_openssl.o -Wconversion -Wno-error=sign-conversion
    build/temp.linux-x86_64-3.6/_openssl.c:2334:6: error: conflicting types for 'X509_get0_signature'
    build/temp.linux-x86_64-3.6/_openssl.c:2472:7: error: 'X509_VERIFY_PARAM_set1_host' redeclared as different kind of symbol
    build/temp.linux-x86_64-3.6/_openssl.c:2474:7: error: 'X509_VERIFY_PARAM_set1_email' redeclared as different kind of symbol
    build/temp.linux-x86_64-3.6/_openssl.c:2476:7: error: 'X509_VERIFY_PARAM_set1_ip' redeclared as different kind of symbol
    build/temp.linux-x86_64-3.6/_openssl.c:2478:7: error: 'X509_VERIFY_PARAM_set1_ip_asc' redeclared as different
kind of symbol
    build/temp.linux-x86_64-3.6/_openssl.c:2479:8: error: 'X509_VERIFY_PARAM_set_hostflags' redeclared as different kind of symbol
    build/temp.linux-x86_64-3.6/_openssl.c:2518:7: error: conflicting types for 'X509_OBJECT_get0_X509'
    error: command 'gcc' failed with exit status 1

What may be the problem?

[reaperhulk]

libressl 2.7.x changed symbols and cryptography needs to be updated to support it. The work is being tracked in #4210 and #4211

[Vintodrimmer]

Thanks!

Will be waiting for the patch.