アプリを Heroku にデプロイしようとしています。を使用してpyOpenSSLおり、 が必要cryptographyであり、 が必要libffiです。ここに含まれるカスタム ビルドパックを見つけましたlibffi: https://github.com/mfenniak/heroku-buildpack-python-libffi。ただし、オンになっているのcryptographyに見つからないようです：libffiLD_LIBRARY_PATH
$ heroku run bash
heroku> echo $LD_LIBRARY_PATH
/app/.heroku/vendor/lib:/app/vendor/libffi-3.0/lib
heroku> ls /app/vendor/libffi-3.0/lib
libffi-3.0.13 libffi.a libffi.la libffi.so libffi.so.6 libffi.so.6.0.1 pkgconfig
ただし、LD_LIBRARY_PATHインストールプロセス中に利用できるかどうかはわかりませんが、ビルドパックのコンパイルステップの一部です: https://github.com/mfenniak/heroku-buildpack-python-libffi/commit/6ce48d4fd6c55fc3dc462cf6300c17854732b6e2
一般に、このビルドパックは機能し、以前はbcrypt( https://pypi.python.org/pypi/bcrypt ) で使用していました。
失敗するheroku展開プロセスは次のとおりです。
$ git push staging master
Fetching repository, done.
Counting objects: 20, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (11/11), done.
Writing objects: 100% (11/11), 1.71 KiB | 0 bytes/s, done.
Total 11 (delta 9), reused 0 (delta 0)
-----> Fetching custom git buildpack... done
-----> Python app detected
-----> No runtime.txt provided; assuming python-2.7.4.
-----> Using Python runtime (python-2.7.4)
-----> Noticed cffi. Bootstrapping libffi.
PKG_CONFIG_PATH=:/app/vendor/libffi-3.0/lib/pkgconfig/
libffi.pc is in-place at /app/vendor/libffi-3.0/vendor/lib/pkgconfig/libffi.pc, libffi-based builds should work!
-----> Installing dependencies using Pip (1.3.1)
Obtaining file:///app (from -r requirements.txt (line 1))
Running setup.py egg_info for package from file:///app
Downloading/unpacking pyOpenSSL==0.14 (from -r requirements.txt (line 76))
Running setup.py egg_info for package pyOpenSSL
no previously-included directories found matching 'doc/_build'
Downloading/unpacking cryptography==0.2.2 (from -r requirements.txt (line 77))
Running setup.py egg_info for package cryptography
Traceback (most recent call last):
File "<string>", line 16, in <module>
File "/tmp/pip-build-u45370/cryptography/setup.py", line 113, in <module>
"build": cffi_build,
File "/app/.heroku/python/lib/python2.7/distutils/core.py", line 152, in setup
dist.run_commands()
File "/app/.heroku/python/lib/python2.7/distutils/dist.py", line 953, in run_commands
self.run_command(cmd)
File "/app/.heroku/python/lib/python2.7/distutils/dist.py", line 972, in run_command
cmd_obj.run()
File "<string>", line 14, in replacement_run
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 259, in find_sources
mm.run()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 325, in run
self.add_defaults()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 361, in add_defaults
sdist.add_defaults(self)
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/sdist.py", line 199, in add_defaults
build_py = self.get_finalized_command('build_py')
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 312, in get_finalized_command
cmd_obj.ensure_finalized()
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 109, in ensure_finalized
self.finalize_options()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/build_py.py", line 73, in finalize_options
_build_py.finalize_options(self)
File "/app/.heroku/python/lib/python2.7/distutils/command/build_py.py", line 46, in finalize_options
('force', 'force'))
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 298, in set_undefined_options
src_cmd_obj.ensure_finalized()
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 109, in ensure_finalized
self.finalize_options()
File "/tmp/pip-build-u45370/cryptography/setup.py", line 52, in finalize_options
from cryptography.hazmat.primitives import constant_time, padding
File "cryptography/hazmat/primitives/constant_time.py", line 21, in <module>
_ffi = cffi.FFI()
File "/app/.heroku/python/lib/python2.7/site-packages/cffi/api.py", line 56, in __init__
import _cffi_backend as backend
ImportError: libffi.so.6: cannot open shared object file: No such file or directory
Complete output from command python setup.py egg_info:
running egg_info
creating pip-egg-info/cryptography.egg-info
writing requirements to pip-egg-info/cryptography.egg-info/requires.txt
writing pip-egg-info/cryptography.egg-info/PKG-INFO
writing top-level names to pip-egg-info/cryptography.egg-info/top_level.txt
writing dependency_links to pip-egg-info/cryptography.egg-info/dependency_links.txt
writing manifest file 'pip-egg-info/cryptography.egg-info/SOURCES.txt'
warning: manifest_maker: standard file '-c' not found
Traceback (most recent call last):
File "<string>", line 16, in <module>
File "/tmp/pip-build-u45370/cryptography/setup.py", line 113, in <module>
"build": cffi_build,
File "/app/.heroku/python/lib/python2.7/distutils/core.py", line 152, in setup
dist.run_commands()
File "/app/.heroku/python/lib/python2.7/distutils/dist.py", line 953, in run_commands
self.run_command(cmd)
File "/app/.heroku/python/lib/python2.7/distutils/dist.py", line 972, in run_command
cmd_obj.run()
File "<string>", line 14, in replacement_run
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 259, in find_sources
mm.run()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 325, in run
self.add_defaults()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/egg_info.py", line 361, in add_defaults
sdist.add_defaults(self)
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/sdist.py", line 199, in add_defaults
build_py = self.get_finalized_command('build_py')
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 312, in get_finalized_command
cmd_obj.ensure_finalized()
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 109, in ensure_finalized
self.finalize_options()
File "/app/.heroku/python/lib/python2.7/site-packages/setuptools/command/build_py.py", line 73, in finalize_options
_build_py.finalize_options(self)
File "/app/.heroku/python/lib/python2.7/distutils/command/build_py.py", line 46, in finalize_options
('force', 'force'))
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 298, in set_undefined_options
src_cmd_obj.ensure_finalized()
File "/app/.heroku/python/lib/python2.7/distutils/cmd.py", line 109, in ensure_finalized
self.finalize_options()
File "/tmp/pip-build-u45370/cryptography/setup.py", line 52, in finalize_options
from cryptography.hazmat.primitives import constant_time, padding
File "cryptography/hazmat/primitives/constant_time.py", line 21, in <module>
_ffi = cffi.FFI()
File "/app/.heroku/python/lib/python2.7/site-packages/cffi/api.py", line 56, in __init__
import _cffi_backend as backend
ImportError: libffi.so.6: cannot open shared object file: No such file or directory
----------------------------------------
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-u45370/cryptography
Storing complete log in /app/.pip/pip.log
! Push rejected, failed to compile Python app
To git@heroku.com:my-app-staging.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:my-app-staging.git'
アップデート
不思議なことに、dyno に ssh してから を実行するheroku run bashと、pip install pyOpenSSL成功します。しかし、これは展開プロセスの何が問題なのかを理解するのに役立たないようです。