Pipenv utils to rewrite lockfiles to work around pipenv bugs

pipenv_utils.py

from pipenv.project import Project

# for working around bug mentioned in https://github.com/pypa/pipenv/issues/4263
def remove_package(package_name):
    project = Project()
    lockfile = project.get_or_create_lockfile()
    if package_name in lockfile.default:
        del lockfile.default[package_name]  # if in normal dependencies
    if package_name in lockfile.develop:
        del lockfile.develop[package_name]  # if in dev
    lockfile.write()