pip install ができない

Question

前提・実現したいこと

pipのインストールをしようと思っているのですが、以下のようにエラーが出ます。
一部すんなりインストールできるものもあり、何が原因なのかよくわかりません。
わかる方がいましたら、コメントお願いします。

発生している問題・エラーメッセージ

$ pip3 install scp
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting scp
  Using cached scp-0.13.3-py2.py3-none-any.whl (8.2 kB)
Collecting paramiko
  Using cached paramiko-2.7.2-py2.py3-none-any.whl (206 kB)
Collecting bcrypt>=3.1.3
  Using cached bcrypt-3.2.0.tar.gz (42 kB)
  Installing build dependencies ... error
  ERROR: Command errored out with exit status 1:
   command: /home/pi/berryconda3/bin/python /home/pi/berryconda3/lib/python3.6/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-kbmkx4zc/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- 'setuptools>=40.8.0' wheel 'cffi>=1.1; python_implementation != '"'"'PyPy'"'"''
       cwd: None
  Complete output (141 lines):
  Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple, https://www.piwheels.org/simple
  Collecting setuptools>=40.8.0
    Using cached setuptools-50.3.2-py3-none-any.whl (785 kB)
  Collecting wheel
    Using cached wheel-0.35.1-py2.py3-none-any.whl (33 kB)
  Collecting cffi>=1.1
    Using cached cffi-1.14.3.tar.gz (470 kB)
  Collecting pycparser
    Using cached pycparser-2.20-py2.py3-none-any.whl (112 kB)
  Building wheels for collected packages: cffi
    Building wheel for cffi (setup.py): started
    Building wheel for cffi (setup.py): finished with status 'error'
    ERROR: Command errored out with exit status 1:
     command: /home/pi/berryconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-8oiom2yx/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-8oiom2yx/cffi/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/pip-wheel-yvyxlita
         cwd: /tmp/pip-install-8oiom2yx/cffi/
    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
    
    gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/home/pi/berryconda3/include/python3.6m -c c/_cffi_backend.c -o build/temp.linux-armv7l-3.6/c/_cffi_backend.o
    c/_cffi_backend.c:15:10: fatal error: ffi.h: そのようなファイルやディレクトリはありません
     #include <ffi.h>
              ^~~~~~~
    compilation terminated.
    error: command 'gcc' failed with exit status 1
    ----------------------------------------
    ERROR: Failed building wheel for cffi
    Running setup.py clean for cffi
  Failed to build cffi
  Installing collected packages: setuptools, wheel, pycparser, cffi
      Running setup.py install for cffi: started
      Running setup.py install for cffi: finished with status 'error'
      ERROR: Command errored out with exit status 1:
       command: /home/pi/berryconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-8oiom2yx/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-8oiom2yx/cffi/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-v_8fcvd_/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-kbmkx4zc/overlay --compile --install-headers /tmp/pip-build-env-kbmkx4zc/overlay/include/python3.6m/cffi
           cwd: /tmp/pip-install-8oiom2yx/cffi/
      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
      
      gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/home/pi/berryconda3/include/python3.6m -c c/_cffi_backend.c -o build/temp.linux-armv7l-3.6/c/_cffi_backend.o
      c/_cffi_backend.c:15:10: fatal error: ffi.h: そのようなファイルやディレクトリはありません
       #include <ffi.h>
                ^~~~~~~
      compilation terminated.
      error: command 'gcc' failed with exit status 1
      ----------------------------------------
  ERROR: Command errored out with exit status 1: /home/pi/berryconda3/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-8oiom2yx/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-8oiom2yx/cffi/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-v_8fcvd_/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-kbmkx4zc/overlay --compile --install-headers /tmp/pip-build-env-kbmkx4zc/overlay/include/python3.6m/cffi Check the logs for full command output.
  ----------------------------------------
ERROR: Command errored out with exit status 1: /home/pi/berryconda3/bin/python /home/pi/berryconda3/lib/python3.6/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-kbmkx4zc/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- 'setuptools>=40.8.0' wheel 'cffi>=1.1; python_implementation != '"'"'PyPy'"'"'' Check the logs for full command output.

補足情報（FW/ツールのバージョンなど）

$ python -V
Python 3.6.1

$ pip3 -V
pip 20.2.4 from /home/pi/berryconda3/lib/python3.6/site-packages/pip (python 3.6)

OS:raspberry pi os
マシン：ラズパイ４

Answer 1

Package libffi was not found in the pkg-config search path.

libffiを入れましょう
ラズパイは持ってないのでパッケージ管理のコマンド知らないけど、例えばubuntuならapt install libffi-dev

Comments

[hentaiman]

まだ解決出来てないのこれ？これ解決してないならどうやって次のステップ進んでんの？