This function runs reticulate::conda_create() inside
callr::r_process_options(), to create the conda environment,
"greta-env-tf2". This is used within install_greta_deps() as part of
setting up python dependencies. It uses a version of python that is
compatible with the versions of tensorflow and tensorflow-probability,
which is established with greta_deps_spec(). We mostly recommend
users use install_greta_deps() to manage their python dependency
installation.
greta_create_conda_env(timeout = 5, deps = greta_deps_spec())nothing - creates a conda environment for a specific python version
time (minutes) until installation stops. Default is 5 minutes.
dependency specification, see greta_deps_spec() for
more details.