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-rw-r--r--lib/spack/spack/solver/asp.py35
-rw-r--r--lib/spack/spack/solver/concretize.lp23
2 files changed, 49 insertions, 9 deletions
diff --git a/lib/spack/spack/solver/asp.py b/lib/spack/spack/solver/asp.py
index f8417434e6..4975bcd452 100644
--- a/lib/spack/spack/solver/asp.py
+++ b/lib/spack/spack/solver/asp.py
@@ -275,6 +275,19 @@ class AspGenerator(object):
self.rule(
fn.variant_default_value(pkg.name, name, val),
fn.node(pkg.name))
+
+ values = variant.values
+ if values is None:
+ values = []
+ elif isinstance(values, spack.variant.DisjointSetsOfValues):
+ union = set()
+ for s in values.sets:
+ union.update(s)
+ values = union
+
+ for value in values:
+ self.fact(fn.variant_possible_value(pkg.name, name, value))
+
self.out.write('\n')
# default compilers for this package
@@ -430,6 +443,7 @@ class AspGenerator(object):
self.h1('Spec Constraints')
for spec in specs:
+ self.fact(fn.root(spec.name))
for dep in spec.traverse():
self.h2('Spec: %s' % str(dep))
self.fact(fn.node(dep.name))
@@ -498,6 +512,11 @@ class ResultParser(object):
result.satisfiable = True
continue
+ match = re.match(r'OPTIMUM FOUND', line)
+ if match:
+ result.satisfiable = True
+ continue
+
match = re.match(r'UNSATISFIABLE', line)
if match:
result.satisfiable = False
@@ -517,17 +536,22 @@ class ResultParser(object):
functions = []
for m in re.finditer(r'(\w+)\(([^)]*)\)', answer):
name, arg_string = m.groups()
- args = re.findall(r'"([^"]*)"', arg_string)
+ args = re.split(r'\s*,\s*', arg_string)
+ args = [s.strip('"') if s.startswith('"') else int(s)
+ for s in args]
functions.append((name, args))
# Functions don't seem to be in particular order in output.
- # Sort them here so that nodes are created before directives
- # that need them, (depends_on(), etc.)
+ # Sort them here so that nodes are first, and so created
+ # before directives that need them (depends_on(), etc.)
functions.sort(key=lambda f: f[0] != "node")
self._specs = {}
for name, args in functions:
- action = getattr(self, name)
+ action = getattr(self, name, None)
+ if not action:
+ print("%s(%s)" % (name, ", ".join(str(a) for a in args)))
+ continue
assert action and callable(action)
action(*args)
@@ -570,6 +594,7 @@ def highlight(string):
string = re.sub(r'\bUNSATISFIABLE', "@R{UNSATISFIABLE}", string)
string = re.sub(r'\bINCONSISTENT', "@R{INCONSISTENT}", string)
string = re.sub(r'\bSATISFIABLE', "@G{SATISFIABLE}", string)
+ string = re.sub(r'\bOPTIMUM FOUND', "@G{OPTIMUM FOUND}", string)
return string
@@ -614,7 +639,7 @@ def solve(specs, dump=None, models=1):
fail_on_error=False)
warnings.seek(0)
- result.warnings = warnings.read()
+ result.warnings = warnings.read().decode("utf-8")
# dump any warnings generated by the solver
if 'warnings' in dump:
diff --git a/lib/spack/spack/solver/concretize.lp b/lib/spack/spack/solver/concretize.lp
index 2a8be91382..006a5e39ed 100644
--- a/lib/spack/spack/solver/concretize.lp
+++ b/lib/spack/spack/solver/concretize.lp
@@ -24,6 +24,11 @@ depends_on(P, D) :- declared_dependency(P, D), not virtual(D), node(P).
1 { depends_on(P, Q) : provides_virtual(Q, V) } 1
:- declared_dependency(P, V), virtual(V), node(P).
+needed(D) :- depends_on(_, D), node(D).
+needed(P) :- root(P).
+:- node(P), not needed(P).
+#defined root/1.
+
% real dependencies imply new nodes.
node(D) :- node(P), depends_on(P, D).
@@ -36,9 +41,8 @@ node(D) :- node(P), depends_on(P, D).
%-----------------------------------------------------------------------------
% Variant semantics
%-----------------------------------------------------------------------------
-
% one variant value for single-valued variants.
-1 { variant_value(P, V, X) : variant_value(P, V, X) } 1
+1 { variant_value(P, V, X) : variant_possible_value(P, V, X) } 1
:- node(P), variant(P, V), variant_single_value(P, V).
% if a variant is set to anything, it is considered 'set'.
@@ -47,8 +51,19 @@ variant_set(P, V) :- variant_set(P, V, _).
% variant_set is an explicitly set variant value. If it's not 'set',
% we revert to the default value. If it is set, we force the set value
variant_value(P, V, X) :- node(P), variant(P, V), variant_set(P, V, X).
-variant_value(P, V, X) :- node(P), variant(P, V), not variant_set(P, V),
- variant_default_value(P, V, X).
+
+% prefer default values.
+variant_not_default(P, V, X, 1)
+ :- variant_value(P, V, X),
+ not variant_default_value(P, V, X),
+ node(P).
+
+variant_not_default(P, V, X, 0)
+ :- variant_value(P, V, X),
+ variant_default_value(P, V, X),
+ node(P).
+
+#minimize { N@1,P,V,X : variant_not_default(P, V, X, N) }.
% suppress wranings about this atom being unset. It's only set if some
% spec or some package sets it, and without this, clingo will give