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Commits › e9655d5
Merge pull request #1215 from vstakhov/master
Vsevolod Stakhov committed 11 years ago
commit e9655d5ee80a30e1556ed09a1a7731617e55adb0
parent 9e14677
1 file changed +31 -20
modified libpkg/pkg_solve.c
@@ -645,33 +645,44 @@ static int
pkg_solve_add_chain_rule(struct pkg_solve_problem *problem,

	struct pkg_solve_variable *var)

{
- 
	struct pkg_solve_variable *curvar;
+ 
	struct pkg_solve_variable *curvar, *confvar;

	struct pkg_solve_rule *rule;

	struct pkg_solve_item *it = NULL;
- 
	LL_FOREACH(var->next, curvar) {
+ 
	/* Rewind to first */
+ 
	while (var->prev->next != NULL) {
+ 
		var = var->prev;
+ 
	}
+
+ 
	LL_FOREACH(var, curvar) {

		/* Conflict rule: (!Ax | !Ay) */
- 
		rule = pkg_solve_rule_new(PKG_RULE_UPGRADE_CONFLICT);
- 
		if (rule == NULL)
- 
			return (EPKG_FATAL);
- 
		/* !Ax */
- 
		it = pkg_solve_item_new(var);
- 
		if (it == NULL) {
- 
			pkg_solve_rule_free(rule);
- 
			return (EPKG_FATAL);
+ 
		if (curvar->next == NULL) {
+ 
			break;

		}
- 
		it->inverse = -1;
- 
		RULE_ITEM_PREPEND(rule, it);
- 
		/* !Ay */
- 
		it = pkg_solve_item_new(curvar);
- 
		if (it == NULL)
- 
			return (EPKG_FATAL);
+ 
		LL_FOREACH(curvar->next, confvar) {
+ 
			rule = pkg_solve_rule_new(PKG_RULE_UPGRADE_CONFLICT);
+ 
			if (rule == NULL)
+ 
				return (EPKG_FATAL);
+ 
			/* !Ax */
+ 
			it = pkg_solve_item_new(curvar);
+ 
			if (it == NULL) {
+ 
				pkg_solve_rule_free(rule);
+ 
				return (EPKG_FATAL);
+ 
			}
- 
		it->inverse = -1;
- 
		RULE_ITEM_PREPEND(rule, it);
+ 
			it->inverse = -1;
+ 
			RULE_ITEM_PREPEND(rule, it);
+ 
			/* !Ay */
+ 
			it = pkg_solve_item_new(confvar);
+ 
			if (it == NULL)
+ 
				return (EPKG_FATAL);
- 
		kv_prepend(typeof(rule), problem->rules, rule);
+ 
			it->inverse = -1;
+ 
			RULE_ITEM_PREPEND(rule, it);
+
+ 
			kv_prepend(typeof(rule), problem->rules, rule);
+ 
		}

	}



	return (EPKG_OK);
@@ -736,7 +747,7 @@ pkg_solve_process_universe_variable(struct pkg_solve_problem *problem,
		 * we need to register conflicts with all following

		 * vars

		 */
- 
		if (!chain_added && cur_var->next != NULL) {
+ 
		if (!chain_added && (cur_var->next != NULL || cur_var->prev != var)) {

			if (pkg_solve_add_chain_rule(problem, cur_var) != EPKG_OK)

				continue;