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# Copyright 2013-2019 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)
from __future__ import print_function
import argparse
import re
import sys
import llnl.util.tty as tty
import spack
import spack.cmd
import spack.cmd.common.arguments as arguments
import spack.hash_types as ht
import spack.package
import spack.solver.asp as asp
description = "concretize a specs using an ASP solver"
section = 'developer'
level = 'long'
#: output options
show_options = ('asp', 'output', 'solutions')
def setup_parser(subparser):
# Solver arguments
subparser.add_argument(
'--show', action='store', default=('solutions'),
help="outputs: a list with any of: "
"%s (default), all" % ', '.join(show_options))
subparser.add_argument(
'--models', action='store', type=int, default=0,
help="number of solutions to search (default 0 for all)")
# Below are arguments w.r.t. spec display (like spack spec)
arguments.add_common_arguments(
subparser, ['long', 'very_long', 'install_status'])
subparser.add_argument(
'-y', '--yaml', action='store_const', dest='format', default=None,
const='yaml', help='print concrete spec as YAML')
subparser.add_argument(
'-j', '--json', action='store_const', dest='format', default=None,
const='json', help='print concrete spec as YAML')
subparser.add_argument(
'-c', '--cover', action='store',
default='nodes', choices=['nodes', 'edges', 'paths'],
help='how extensively to traverse the DAG (default: nodes)')
subparser.add_argument(
'-N', '--namespaces', action='store_true', default=False,
help='show fully qualified package names')
subparser.add_argument(
'-t', '--types', action='store_true', default=False,
help='show dependency types')
subparser.add_argument(
'--timers', action='store_true', default=False,
help='print out timers for different solve phases')
subparser.add_argument(
'--stats', action='store_true', default=False,
help='print out statistics from clingo')
subparser.add_argument(
'specs', nargs=argparse.REMAINDER, help="specs of packages")
def solve(parser, args):
# these are the same options as `spack spec`
name_fmt = '{namespace}.{name}' if args.namespaces else '{name}'
fmt = '{@version}{%compiler}{compiler_flags}{variants}{arch=architecture}'
install_status_fn = spack.spec.Spec.install_status
kwargs = {
'cover': args.cover,
'format': name_fmt + fmt,
'hashlen': None if args.very_long else 7,
'show_types': args.types,
'status_fn': install_status_fn if args.install_status else None,
'hashes': args.long or args.very_long
}
# process dump options
dump = re.split(r'\s*,\s*', args.show)
if 'all' in dump:
dump = show_options
for d in dump:
if d not in show_options:
raise ValueError(
"Invalid option for '--show': '%s'\nchoose from: (%s)"
% (d, ', '.join(show_options + ('all',))))
models = args.models
if models < 0:
tty.die("model count must be non-negative: %d")
specs = spack.cmd.parse_specs(args.specs)
# dump generated ASP program
result = asp.solve(
specs, dump=dump, models=models, timers=args.timers, stats=args.stats
)
if 'solutions' not in dump:
return
# die if no solution was found
# TODO: we need to be able to provide better error messages than this
if not result.satisfiable:
result.print_cores()
tty.die("Unsatisfiable spec.")
# dump the solutions as concretized specs
if 'solutions' in dump:
best = min(result.answers)
opt, _, answer = best
if not args.format:
tty.msg("Best of %d answers." % result.nmodels)
tty.msg("Optimization: %s" % opt)
# iterate over roots from command line
for input_spec in specs:
key = input_spec.name
if input_spec.virtual:
providers = [spec.name for spec in answer.values()
if spec.package.provides(key)]
key = providers[0]
spec = answer[key]
# With -y, just print YAML to output.
if args.format == 'yaml':
# use write because to_yaml already has a newline.
sys.stdout.write(spec.to_yaml(hash=ht.build_hash))
elif args.format == 'json':
sys.stdout.write(spec.to_json(hash=ht.build_hash))
else:
sys.stdout.write(
spec.tree(color=sys.stdout.isatty(), **kwargs))
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