brew install git-filter-repo

base_path=$(pwd)

if [ -d pymatgen-filtered ] ; then
    rm -rf pymatgen-filtered
fi

git clone https://github.com/materialsproject/pymatgen.git pymatgen-filtered

cd pymatgen-filtered
args=""
for p in alchemy command_line core electronic_structure optimization phonon symmetry transformations util ; do
    args="$args --path-rename pymatgen/$p":"src/pymatgen/$p"
    args="$args --path src/pymatgen/$p"
done
echo $args

git filter-repo $args

git remote add origin https://github.com/esoteric-ephemera/pymatgen-core.git
git fetch origin
git merge origin/history --allow-unrelated-histories
<resolve merge conflicts here>
git push origin HEAD:history