Install MacPorts 2.5.3 without sudo / root privileges

install-mac-ports-no-root.bash

# install
mkdir ~/macports
cd ~/macports
curl -O https://distfiles.macports.org/MacPorts/MacPorts-2.5.3.tar.bz2
tar xf MacPorts-2.5.3.tar.bz2
cd MacPorts-2.5.3/

./configure --enable-readline --prefix=$HOME/macports --with-no-root-privileges
make && make install

# bash / zsh
echo "export MACPORTS_HOME=\\$HOME/macports" >> ~/.bash_profile
echo "export PATH=\\$MACPORTS_HOME/bin:\\$MACPORTS_HOME/sbin" >> ~/.bash_profile

# fish
echo "set -gx MACPORTS_HOME \\$HOME/macports" >> ~/.config/fish/config.fish
echo "set -gx PATH $MACPORTS_HOME/bin $MACPORTS_HOME/sbin" >> ~/.config/fish/config.fish

It might be helpful to update the version. Current one is 2.8.0.