Client state
type t = {partial : bool;root : OpamPath.t;switch : OpamTypes.switch;compiler : OpamTypes.compiler;compiler_version : OpamTypes.compiler_version lazy_t;opams : OpamFile.OPAM.t OpamTypes.package_map;repositories : OpamFile.Repo_config.t OpamTypes.repository_name_map;packages : OpamTypes.package_set;available_packages : OpamTypes.package_set Lazy.t;aliases : OpamFile.Aliases.t;compilers : OpamTypes.compiler_set;pinned : OpamFile.Pinned.t;installed : OpamFile.Installed.t;installed_roots : OpamFile.Installed_roots.t;reinstall : OpamFile.Reinstall.t;config : OpamFile.Config.t;package_index : OpamFile.Package_index.t;compiler_index : OpamFile.Compiler_index.t;}