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Python3.9 で nagisa をインストールする on M1 Mac

Last updated at Posted at 2021-05-28

やりたいこと

nagisa をインストールしたい。nagisa については以下参照。

インストールの手順

必要なもののインストール

brew install cmake eigen

pkg-config で見つかるようにパスを通す。~/.zshrc に以下の行を追加

export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/homebrew/share/pkgconfig

エラー対策

pip install dynet に失敗

error: Could not download Eigen from 'https://github.com/clab/dynet/releases/download/2.1/eigen-b2e267dc99d4.zip': <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1129)>

これは、Certificate の設定が無いかららしい。そこで、

以下のコマンドを実行

/Applications/Python\ 3.9/Install\ Certificates.command 

import nagisa で失敗

以下のエラーで import できない

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/_dynet.cpython-39-darwin.so, 2): Library not loaded: /private/var/(中略)/dynet/libdynet.dylib
  Referenced from: /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/_dynet.cpython-39-darwin.so
  Reason: image not found

Path が無いかららしい

以下のパス設定で import に成功

export DYLD_LIBRARY_PATH=$(dirname $(which python3))/../lib:$DYLD_LIBRARY_PATH
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