Source code for spack.cmd.gc

# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

import llnl.util.tty as tty

import spack.cmd.common.arguments
import spack.cmd.uninstall
import spack.environment as ev
import spack.store

description = "remove specs that are now no longer needed"
section = "build"
level = "short"


[docs]def setup_parser(subparser): spack.cmd.common.arguments.add_common_arguments(subparser, ['yes_to_all'])
[docs]def gc(parser, args): specs = spack.store.db.unused_specs # Restrict garbage collection to the active environment # speculating over roots that are yet to be installed env = ev.active_environment() if env: msg = 'Restricting the garbage collection to the "{0}" environment' tty.msg(msg.format(env.name)) env.concretize() roots = [s for s in env.roots()] all_hashes = set([s.dag_hash() for r in roots for s in r.traverse()]) lr_hashes = set([s.dag_hash() for r in roots for s in r.traverse(deptype=('link', 'run'))]) maybe_to_be_removed = all_hashes - lr_hashes specs = [s for s in specs if s.dag_hash() in maybe_to_be_removed] if not specs: msg = "There are no unused specs. Spack's store is clean." tty.msg(msg) return if not args.yes_to_all: spack.cmd.uninstall.confirm_removal(specs) spack.cmd.uninstall.do_uninstall(None, specs, force=False)