[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2317: 'bin/pip install cryptography' in a virtualenv fails unless libssl-dev is installed

[Tahoe-LAFS]

#2317: 'bin/pip install cryptography' in a virtualenv fails unless libssl-dev is
installed
-------------------------------------------------+-------------------------
 Reporter:  daira                                |          Owner:
     Type:  defect                               |         Status:  new
 Priority:  normal                               |      Milestone:
Component:  packaging                            |  undecided
 Keywords:  pip install cryptography openssl     |        Version:  1.10.0
  virtualenv                                     |  Launchpad Bug:
-------------------------------------------------+-------------------------
 {{{
 $ bin/pip install cryptography
 [...]
     building '_Cryptography_cffi_4ed9e37dx4000d087' extension
     x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv
 -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c
 cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_4ed9e37dx4000d087.c
 -o /home/davidsarah/test-
 venv/build/cryptography/cryptography/hazmat/bindings/__pycache__/cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_4ed9e37dx4000d087.o
 cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_4ed9e37dx4000d087.c:194:25:
 fatal error: openssl/aes.h: No such file or directory
     compilation terminated.
     Traceback (most recent call last):
       File "<string>", line 1, in <module>
       File "/home/davidsarah/test-venv/build/cryptography/setup.py", line
 338, in <module>
         **keywords_with_side_effects(sys.argv)
       File "/usr/lib/python2.7/distutils/core.py", line 152, in setup
         dist.run_commands()
       File "/usr/lib/python2.7/distutils/dist.py", line 953, in
 run_commands
         self.run_command(cmd)
       File "/usr/lib/python2.7/distutils/dist.py", line 971, in
 run_command
         cmd_obj.ensure_finalized()
       File "/usr/lib/python2.7/distutils/cmd.py", line 109, in
 ensure_finalized
         self.finalize_options()
       File "/home/davidsarah/test-venv/build/cryptography/setup.py", line
 118, in finalize_options
         self.distribution.ext_modules = get_ext_modules()
       File "/home/davidsarah/test-venv/build/cryptography/setup.py", line
 86, in get_ext_modules
         OpenSSLBinding().ffi.verifier.get_extension(),
       File "cryptography/hazmat/bindings/openssl/binding.py", line 89, in
 __init__
         self._ensure_ffi_initialized()
       File "cryptography/hazmat/bindings/openssl/binding.py", line 113, in
 _ensure_ffi_initialized
         libraries=libraries,
       File "cryptography/hazmat/bindings/utils.py", line 80, in build_ffi
         extra_link_args=extra_link_args,
       File "/home/davidsarah/test-venv/build/cryptography/cffi-0.8.6-py2.7
 -linux-x86_64.egg/cffi/api.py", line 340, in verify
         lib = self.verifier.load_library()
       File "/home/davidsarah/test-venv/build/cryptography/cffi-0.8.6-py2.7
 -linux-x86_64.egg/cffi/verifier.py", line 74, in load_library
         self._compile_module()
       File "/home/davidsarah/test-venv/build/cryptography/cffi-0.8.6-py2.7
 -linux-x86_64.egg/cffi/verifier.py", line 139, in _compile_module
         outputfilename = ffiplatform.compile(tmpdir, self.get_extension())
       File "/home/davidsarah/test-venv/build/cryptography/cffi-0.8.6-py2.7
 -linux-x86_64.egg/cffi/ffiplatform.py", line 25, in compile
         outputfilename = _build(tmpdir, ext)
       File "/home/davidsarah/test-venv/build/cryptography/cffi-0.8.6-py2.7
 -linux-x86_64.egg/cffi/ffiplatform.py", line 51, in _build
         raise VerificationError('%s: %s' % (e.__class__.__name__, e))
     cffi.ffiplatform.VerificationError: CompileError: command 'x86_64
 -linux-gnu-gcc' failed with exit status 1
 }}}

 Works after ``sudo apt-get install libssl-dev``.

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2317>
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