Macports + Mavericks + Xcode 5.0.1 GM. From http://www.ghostwheel.com/merlin/Personal/notes/2013/10/05/macports-on-mavericks/

gistfile1.txt

# Install Xcode 5.0.1 GM seed, open it, install Command Line Tools. 
# Uninstall macports, see https://www.macports.org/guide/chunked/installing.macports.uninstalling.html
# Run the following:

curl -O https://distfiles.macports.org/MacPorts/MacPorts-2.2.0.tar.bz2
tar jxvf MacPorts-2.2.0.tar.bz2
cd MacPorts-2.2.0
CC=/usr/bin/cc ./configure --prefix=/opt/local --with-install-user=root --with-install-group=admin --with-directory-mode=0755 --enable-readline \
--with-tclpackage=/Library/Tcl \
--with-tcl=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tcl.framework \
--with-tclinclude=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tcl.framework/Headers
sudo make
sudo make install
export PATH=/opt/local/bin:$PATH # add this to your ~/.profile if you still didn't
sudo port -dv selfupdate