pyenv and grunt-contrib-testem

when homebrew do not allow sudo command to be used for writing into directory.

sudo chown -R $(whoami) /usr/local/Frameworks
chmod u+w /usr/local/Frameworks

https://donatstudios.com/MojaveMissingHeaderFiles

$ sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /
If you get an error about that file not existing, you probably simply don't have the Xcode command line tools installed which can be remedied simply as follows:

$ xcode-select --install

https://blog.fazero.me/2015/09/15/让终端走代理的几种方法/
让终端走代理的几种方法
export ALL_PROXY=socks5://127.0.0.1:1080
export http_proxy="socks5://127.0.0.1:1080"
export https_proxy="socks5://127.0.0.1:1080"

https://blog.fazero.me/2015/07/11/用shadowsocks加速git-clone/
用shadowsocks加速git clone
git config --global http.proxy 'socks5://127.0.0.1:1080'
git config --global https.proxy 'socks5://127.0.0.1:1080'

readline is keg-only, which means it was not symlinked into /usr/local,
because macOS provides the BSD libedit library, which shadows libreadline.
In order to prevent conflicts when programs look for libreadline we are
defaulting this GNU Readline installation to keg-only.

For compilers to find readline you may need to set:
export LDFLAGS="-L/usr/local/opt/readline/lib"
export CPPFLAGS="-I/usr/local/opt/readline/include"

For pkg-config to find readline you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/readline/lib/pkgconfig"

---

A CA file has been bootstrapped using certificates from the system
keychain. To add additional certificates, place .pem files in
/usr/local/etc/openssl@1.1/certs

and run
/usr/local/opt/openssl@1.1/bin/c_rehash

openssl@1.1 is keg-only, which means it was not symlinked into /usr/local,
because openssl/libressl is provided by macOS so don't link an incompatible version.

If you need to have openssl@1.1 first in your PATH run:
echo 'export PATH="/usr/local/opt/openssl@1.1/bin:$PATH"' >> ~/.bash_profile

For compilers to find openssl@1.1 you may need to set:
export LDFLAGS="-L/usr/local/opt/openssl@1.1/lib"
export CPPFLAGS="-I/usr/local/opt/openssl@1.1/include"

For pkg-config to find openssl@1.1 you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/openssl@1.1/lib/pkgconfig"

zlib is keg-only, which means it was not symlinked into /usr/local,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.

For compilers to find zlib you may need to set:
export LDFLAGS="-L/usr/local/opt/zlib/lib"
export CPPFLAGS="-I/usr/local/opt/zlib/include"

For pkg-config to find zlib you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/zlib/lib/pkgconfig"

cd /usr/local/etc/openssl@1.1/certs
/usr/local/opt/openssl@1.1/bin/c_rehash
export LDFLAGS="-L/usr/local/opt/openssl@1.1/lib"
export CPPFLAGS="-I/usr/local/opt/openssl@1.1/include"
export PKG_CONFIG_PATH="/usr/local/opt/openssl@1.1/lib/pkgconfig"
export LDFLAGS="-L/usr/local/opt/readline/lib"
export CPPFLAGS="-I/usr/local/opt/readline/include"
export PKG_CONFIG_PATH="/usr/local/opt/readline/lib/pkgconfig"
echo 'export PATH="/usr/local/opt/sqlite/bin:$PATH"' >> ~/.bash_profile
export LDFLAGS="-L/usr/local/opt/sqlite/lib"
export CPPFLAGS="-I/usr/local/opt/sqlite/include"
export PKG_CONFIG_PATH="/usr/local/opt/sqlite/lib/pkgconfig"
export LDFLAGS="-L/usr/local/opt/zlib/lib"
export CPPFLAGS="-I/usr/local/opt/zlib/include"
export PKG_CONFIG_PATH="/usr/local/opt/zlib/lib/pkgconfig"

echo "export SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk" >> ~/.zshrc
SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk MACOSX_DEPLOYMENT_TARGET=10.14 pyenv install 2.7.8