mysterious recipe bootstrap failure (fatal error: ffi.h: No such file or directory)

[Paweł Hajdan, Jr.]

I've noticed https://bugs.chromium.org/p/chromium/issues/detail?id=709260 was filed, and the root cause seems to be that the bootstrap failed.

Any ideas what went wrong? It's also worrying the command seemed to continue, as opposed to bailing out when the bootstrap failed.

Building wheels for collected packages: ndg-httpsclient, pyOpenSSL, cryptography, pycparser

  Running setup.py bdist_wheel for ndg-httpsclient: started

  Running setup.py bdist_wheel for ndg-httpsclient: finished with status 'done'

  Stored in directory: /usr/local/google/home/dgarrett/sand/crops/build/scripts/slave/.recipe_deps/recipe_engine/.bootstrap_cache/download_cache/wheels/b3/7f/2c/f167f769b93957ab784eba09ab089bf37195b955e52c1e574a

  Running setup.py bdist_wheel for pyOpenSSL: started

  Running setup.py bdist_wheel for pyOpenSSL: finished with status 'done'

  Stored in directory: /usr/local/google/home/dgarrett/sand/crops/build/scripts/slave/.recipe_deps/recipe_engine/.bootstrap_cache/download_cache/wheels/85/29/e2/e8bfda343f38e339b01c31422dc4e6e288bb1b1428b86fa22e

  Running setup.py bdist_wheel for cryptography: started

  Running setup.py bdist_wheel for cryptography: finished with status 'error'

  Complete output from command /usr/local/google/home/dgarrett/sand/crops/build/scripts/slave/.recipe_deps/recipe_engine/ENV/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-iacMlj/cryptography/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmp2Rl90apip-wheel- --python-tag cp27:

  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

  c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory

   #include <ffi.h>

                   ^

  compilation terminated.

Paweł