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##############################################################################
# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/llnl/spack
# Please also see the LICENSE file for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
from __future__ import print_function
import argparse
import llnl.util.tty as tty
import spack
import spack.cmd
import spack.repository
from spack.cmd.find import display_specs
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.
"""
# Arguments for display_specs when we find ambiguity
display_args = {
'long': True,
'show_flags': True,
'variants':True
}
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(
'-f', '--force', action='store_true', dest='force',
help="Remove regardless of whether other packages depend on this one.")
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.")
subparser.add_argument(
'-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, **display_args)
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):
if not args.packages:
tty.die("uninstall requires at least one package argument.")
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'
# 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(lst, **display_args)
print('')
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, **display_args)
print('')
ask_for_confirmation('Do you want to proceed ? ')
# Uninstall everything on the list
do_uninstall(uninstall_list, args.force)
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