diff options
Diffstat (limited to 'lib/spack/spack/cmd/uninstall.py')
| -rw-r--r-- | lib/spack/spack/cmd/uninstall.py | 191 |
1 files changed, 140 insertions, 51 deletions
diff --git a/lib/spack/spack/cmd/uninstall.py b/lib/spack/spack/cmd/uninstall.py index 350ef372cb..1ff3d8db5f 100644 --- a/lib/spack/spack/cmd/uninstall.py +++ b/lib/spack/spack/cmd/uninstall.py @@ -23,19 +23,33 @@ # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ############################################################################## from __future__ import print_function -import sys + import argparse import llnl.util.tty as tty -from llnl.util.tty.colify import colify - import spack import spack.cmd import spack.repository from spack.cmd.find import display_specs -from spack.package import PackageStillNeededError -description="Remove an installed package" +description = "Remove an installed package" + +error_message = """You can either: + a) Use a more specific spec, or + b) use spack uninstall -a to uninstall ALL matching specs. +""" + + +def ask_for_confirmation(message): + while True: + tty.msg(message + '[y/n]') + choice = raw_input().lower() + if choice == 'y': + break + elif choice == 'n': + raise SystemExit('Operation aborted') + tty.warn('Please reply either "y" or "n"') + def setup_parser(subparser): subparser.add_argument( @@ -44,10 +58,101 @@ def setup_parser(subparser): subparser.add_argument( '-a', '--all', action='store_true', dest='all', help="USE CAREFULLY. Remove ALL installed packages that match each " + - "supplied spec. i.e., if you say uninstall libelf, ALL versions of " + - "libelf are uninstalled. This is both useful and dangerous, like rm -r.") + "supplied spec. i.e., if you say uninstall libelf, ALL versions of " + + "libelf are uninstalled. This is both useful and dangerous, like rm -r.") subparser.add_argument( - 'packages', nargs=argparse.REMAINDER, help="specs of packages to uninstall") + '-d', '--dependents', action='store_true', dest='dependents', + help='Also uninstall any packages that depend on the ones given via command line.' + ) + subparser.add_argument( + '-y', '--yes-to-all', action='store_true', dest='yes_to_all', + help='Assume "yes" is the answer to every confirmation asked to the user.' + + ) + subparser.add_argument('packages', nargs=argparse.REMAINDER, help="specs of packages to uninstall") + + +def concretize_specs(specs, allow_multiple_matches=False, force=False): + """ + Returns a list of specs matching the non necessarily concretized specs given from cli + + Args: + specs: list of specs to be matched against installed packages + allow_multiple_matches : boolean (if True multiple matches for each item in specs are admitted) + + Return: + list of specs + """ + specs_from_cli = [] # List of specs that match expressions given via command line + has_errors = False + for spec in specs: + matching = spack.installed_db.query(spec) + # For each spec provided, make sure it refers to only one package. + # Fail and ask user to be unambiguous if it doesn't + if not allow_multiple_matches and len(matching) > 1: + tty.error("%s matches multiple packages:" % spec) + print() + display_specs(matching, long=True) + print() + has_errors = True + + # No installed package matches the query + if len(matching) == 0 and not force: + tty.error("%s does not match any installed packages." % spec) + has_errors = True + + specs_from_cli.extend(matching) + if has_errors: + tty.die(error_message) + + return specs_from_cli + + +def installed_dependents(specs): + """ + Returns a dictionary that maps a spec with a list of its installed dependents + + Args: + specs: list of specs to be checked for dependents + + Returns: + dictionary of installed dependents + """ + dependents = {} + for item in specs: + lst = [x for x in item.package.installed_dependents if x not in specs] + if lst: + lst = list(set(lst)) + dependents[item] = lst + return dependents + + +def do_uninstall(specs, force): + """ + Uninstalls all the specs in a list. + + Args: + specs: list of specs to be uninstalled + force: force uninstallation (boolean) + """ + packages = [] + for item in specs: + try: + # should work if package is known to spack + packages.append(item.package) + except spack.repository.UnknownPackageError as e: + # The package.py file has gone away -- but still + # want to uninstall. + spack.Package(item).do_uninstall(force=True) + + # Sort packages to be uninstalled by the number of installed dependents + # This ensures we do things in the right order + def num_installed_deps(pkg): + return len(pkg.installed_dependents) + + packages.sort(key=num_installed_deps) + for item in packages: + item.do_uninstall(force=force) def uninstall(parser, args): @@ -56,50 +161,34 @@ def uninstall(parser, args): with spack.installed_db.write_transaction(): specs = spack.cmd.parse_specs(args.packages) + # Gets the list of installed specs that match the ones give via cli + uninstall_list = concretize_specs(specs, args.all, args.force) # takes care of '-a' is given in the cli + dependent_list = installed_dependents(uninstall_list) # takes care of '-d' - # For each spec provided, make sure it refers to only one package. - # Fail and ask user to be unambiguous if it doesn't - pkgs = [] - for spec in specs: - matching_specs = spack.installed_db.query(spec) - if not args.all and len(matching_specs) > 1: - tty.error("%s matches multiple packages:" % spec) - print() - display_specs(matching_specs, long=True) - print() - print("You can either:") - print(" a) Use a more specific spec, or") - print(" b) use spack uninstall -a to uninstall ALL matching specs.") - sys.exit(1) - - if len(matching_specs) == 0: - if args.force: continue - tty.die("%s does not match any installed packages." % spec) - - for s in matching_specs: - try: - # should work if package is known to spack - pkgs.append(s.package) - except spack.repository.UnknownPackageError as e: - # The package.py file has gone away -- but still - # want to uninstall. - spack.Package(s).do_uninstall(force=True) - - # Sort packages to be uninstalled by the number of installed dependents - # This ensures we do things in the right order - def num_installed_deps(pkg): - return len(pkg.installed_dependents) - pkgs.sort(key=num_installed_deps) - - # Uninstall packages in order now. - for pkg in pkgs: - try: - pkg.do_uninstall(force=args.force) - except PackageStillNeededError as e: - tty.error("Will not uninstall %s" % e.spec.format("$_$@$%@$#", color=True)) + # Process dependent_list and update uninstall_list + has_error = False + if dependent_list and not args.dependents and not args.force: + for spec, lst in dependent_list.items(): + tty.error("Will not uninstall %s" % spec.format("$_$@$%@$#", color=True)) print('') print("The following packages depend on it:") - display_specs(e.dependents, long=True) + display_specs(lst, long=True) print('') - print("You can use spack uninstall -f to force this action.") - sys.exit(1) + has_error = True + elif args.dependents: + for key, lst in dependent_list.items(): + uninstall_list.extend(lst) + uninstall_list = list(set(uninstall_list)) + + if has_error: + tty.die('You can use spack uninstall --dependents to uninstall these dependencies as well') + + if not args.yes_to_all: + tty.msg("The following packages will be uninstalled : ") + print('') + display_specs(uninstall_list, long=True) + print('') + ask_for_confirmation('Do you want to proceed ? ') + + # Uninstall everything on the list + do_uninstall(uninstall_list, args.force) |