Thanks for your suggestions.
I tried the pip instructions, but in the 'install certbot' step, I ran into these error:
Using legacy 'setup.py install' for zope.hookable, since package 'wheel' is not installed.
Using legacy 'setup.py install' for cffi, since package 'wheel' is not installed.
Using legacy 'setup.py install' for configobj, since package 'wheel' is not installed.
Installing collected packages: pycparser, six, cffi, urllib3, idna, cryptography, chardet, certifi, requests, pytz, PyOpenSSL, zope.interface, zope.hookable, zope.event, requests-toolbelt, pyrfc3339, josepy, zope.component, parsedatetime, distro, configobj, ConfigArgParse, acme, pyparsing, certbot, certbot-nginx
Running setup.py install for cffi ... error
ERROR: Command errored out with exit status 1:
command: /opt/certbot/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-c3kzhn9_/cffi_692fca6285f442c3a8908a5da7e6bec0/setup.py'"'"'; __file__='"'"'/tmp/pip-install-c3kzhn9_/cffi_692fca6285f442c3a8908a5da7e6bec0/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-6rru8yco/install-record.txt --single-version-externally-managed --compile --install-headers /opt/certbot/include/site/python3.5/cffi
cwd: /tmp/pip-install-c3kzhn9_/cffi_692fca6285f442c3a8908a5da7e6bec0/
Complete output (56 lines):
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
running install
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.5
creating build/lib.linux-x86_64-3.5/cffi
copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/api.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/error.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/lock.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/model.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/cparser.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/recompiler.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/verifier.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/__init__.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/commontypes.py -> build/lib.linux-x86_64-3.5/cffi
copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.5/cffi
copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.5/cffi
copying cffi/_embedding.h -> build/lib.linux-x86_64-3.5/cffi
copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.5/cffi
running build_ext
building '_cffi_backend' extension
creating build/temp.linux-x86_64-3.5
creating build/temp.linux-x86_64-3.5/c
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.5-5Cvh2K/python3.5-3.5.3=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/opt/certbot/include -I/usr/include/python3.5m -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.5/c/_cffi_backend.o
c/_cffi_backend.c:2:20: fatal error: Python.h: No such file or directory
#include <Python.h>
^
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /opt/certbot/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-c3kzhn9_/cffi_692fca6285f442c3a8908a5da7e6bec0/setup.py'"'"'; __file__='"'"'/tmp/pip-install-c3kzhn9_/cffi_692fca6285f442c3a8908a5da7e6bec0/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-6rru8yco/install-record.txt --single-version-externally-managed --compile --install-headers /opt/certbot/include/site/python3.5/cffi Check the logs for full command output.
