How i setup macports for monterey (MacOSX SDK 12)

instructions.txt

# How i fixed the SDK 12 warning from macports.

# Set me up as a sudo user.
# add this to /etc/sudoers (visudo)
# jlinoff         ALL=(ALL) NOPASSWD: ALL
sudo dseditgroup -o edit -a jlinoff -t user admin
sudo dseditgroup -o edit -a jlinoff -t user wheel

# make sure xcode is installed and the license is accepted
xcode-select --install
xcodebuild -license accept
xcodebuild -version 
xcode-select -version

# Check for the correct SDK
# ERROR: this showed no entry for  MacOSX12.0.sdk
ls -l /Library/Developer/CommandLineTools/SDKs/

# Get the SDK 12 path.
xcodebuild -sdk -version | grep ^Path: | grep MacOSX
# Link to it in thbe developer path for macports
sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk \
           /Library/Developer/CommandLineTools/SDKs/MacOSX12.0.sdk
           
# verify - no warning should be reported.
sudo port install tree

recreate.txt

#!/usr/bin/env bash
#
# Re-create an existing macports instalaation from scratch.
#
##set -ex
set -e

# Change this for a new version of macports
PKGURL="https://github.com/macports/macports-base/releases/download/v2.7.1/MacPorts-2.7.1-10.15-Catalina.pkg"

# Make sure the paths are correct.
export PATH="/opt/local/bin:/opt/local/sbin:$PATH"
export MANPATH="/opt/local/share/man:$MANPATH"

# add in my packages
if [ ! -f /tmp/pkgs.txt ] ; then
    port installed >/tmp/pkgs.txt
fi

# download macports
if [ ! -f /tmp/macports.pkg ] ; then
    curl -X GET -L "$PKGURL" \
         --out /tmp/macports.pkg
    ls -l /tmp/macports.pkg
fi

# update sudo - not used here
#sudo dseditgroup -o edit -a $USER -t user admin
#sudo dseditgroup -o edit -a $USER -t user wheel

# remove macports
# URL: https://guide.macports.org/chunked/installing.macports.uninstalling.html
if [ -f /opt/local/bin/port ] ; then
    sudo port -fp uninstall installed || true
    sudo dscl . -delete /Users/macports || true
    sudo dscl . -delete /Groups/macports || true
    sudo rm -rf /opt/local
    sudo rm -rf /Applications/DarwinPorts
    sudo rm -rf /Applications/MacPorts
    sudo rm -rf /Library/LaunchDaemons/org.macports.*
    sudo rm -rf /Library/Receipts/DarwinPorts*.pkg
    sudo rm -rf /Library/Receipts/MacPorts*.pkg
    sudo rm -rf /Library/StartupItems/DarwinPortsStartup
    sudo rm -rf /Library/Tcl/darwinports1.0
    sudo rm -rf /Library/Tcl/macports1.0
    sudo rm -rf ~/.macports
fi

# make sure xcode is installed and the license is accepted
xcode-select --install || true
sudo xcodebuild -license accept
xcodebuild -version 
xcode-select -version

# Get the MacOSX.platform.sdk path.
SDKPATH=$(xcodebuild -sdk -version | grep ^Path: | grep -E 'MacOSX[0-9\.]*.sdk' | awk '{print $2}')
SDKFILE=$(basename "$SDKPATH")
DSTPATH="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/$SDKFILE"
# Link to it in the developer path for macports
if [ ! -e  "$DSTPATH" ] ; then
    sudo ln -s "$SDKPATH" "$DSTPATH"
fi
           
# install macports using the built-in installer
sudo installer -pkg /tmp/macports.pkg -target /

# re-add all the packages from the previous install
# https://ports.macports.org/search/?
# order is important here.
PKGS=($(grep '^ ' /tmp/pkgs.txt | awk '{print $1}' | uniq))
total=${#PKGS[@]}
for PKG in "${PKGS[@]}" ; do
    i=$(( i + 1))
    printf 'INFO:%d: installing pkg %d of %d - %s' "$LINENO" "$i" "$total" "$PKG"
    yes | sudo port install "$PKG"
done

# python-3.9 is my default version, to get pipenv to work i had to do this:
port select --set pip3 pip39
pip3 install pipenv