### Option `gc-keep-outputs' # # If `true', the garbage collector will keep the outputs of # non-garbage derivations. If `false' (default), outputs will be # deleted unless they are GC roots themselves (or reachable from other # roots). # # In general, outputs must be registered as roots separately. # However, even if the output of a derivation is registered as a root, # the collector will still delete store paths that are used only a # build time (e.g., the C compiler, or source tarballs downloaded from # the network). To prevent it from doing so, set this option to # `true'. gc-keep-outputs = false ### Option `gc-keep-derivations' # # If `true' (default), the garbage collector will keep the derivations # from which non-garbage store paths were built. If `false', they # will be deleted unless explicitly registered as a root (or reachable # from other roots). # # Keeping derivation around is useful for querying and traceability # (e.g., it allows you to ask with what dependencies or options a # store path was built), so by default this option is on. Turn it off # to safe a bit of disk space (or a lot if `gc-keep-outputs' is also # turned on). gc-keep-derivations = true