diff -r f8c27fe9fe63 -r 6e93e5485947 librazor/razor.c
--- a/librazor/razor.c	Fri Jun 12 16:59:11 2009 +0100
+++ b/librazor/razor.c	Fri Jul 03 18:02:33 2009 +0100
@@ -67,6 +67,7 @@
 	{ RAZOR_PROPERTIES,	offsetof(struct razor_set, properties) },
 	{ RAZOR_PACKAGE_POOL,	offsetof(struct razor_set, package_pool) },
 	{ RAZOR_PROPERTY_POOL,	offsetof(struct razor_set, property_pool) },
+	{ RAZOR_PREFIX_POOL,	offsetof(struct razor_set, prefix_pool) },
 };
 
 struct razor_set_section_index razor_files_sections[] = {
@@ -377,9 +378,9 @@
 }
 
 static const char *
-razor_package_get_details_type(struct razor_set *set,
-			       struct razor_package *package,
-			       enum razor_detail_type type)
+razor_package_get_details_string(struct razor_set *set,
+				 struct razor_package *package,
+				 enum razor_detail_type type)
 {
 	const char *pool;
 
@@ -434,6 +435,24 @@
 	}
 }
 
+static const char *const *
+razor_package_get_details_array(struct razor_set *set,
+				struct razor_package *package,
+				enum razor_detail_type type)
+{
+	switch (type) {
+	case RAZOR_DETAIL_PREFIXES:
+		/* We don't track prefixes in packages. Install prefixes
+		 * are tracked, but we don't provide an API to get them.
+		 */
+		return NULL;
+
+	default:
+		fprintf(stderr, "type %u not found\n", type);
+		return NULL;
+	}
+}
+
 /**
  * razor_package_get_details_varg:
  * @set: a %razor_set
@@ -447,14 +466,22 @@
 {
 	int i;
 	enum razor_detail_type type;
-	const char **data;
+	const char **string;
+	const char *const **array;
 
 	for (i = 0;; i += 2) {
 		type = va_arg(args, enum razor_detail_type);
 		if (type == RAZOR_DETAIL_LAST)
 			break;
-		data = va_arg(args, const char **);
-		*data = razor_package_get_details_type(set, package, type);
+		if (type == RAZOR_DETAIL_PREFIXES) {
+			array = va_arg(args, const char *const **);
+			*array = razor_package_get_details_array(set, package,
+								 type);
+		} else {
+			string = va_arg(args, const char **);
+			*string = razor_package_get_details_string(set, package,
+								   type);
+		}
 	}
 
 }
@@ -501,7 +528,10 @@
 	struct razor_package *p;
 	char buffer[PATH_MAX];
 	const char *name, *program, *script;
-	int retval = 0, count;
+	int retval = 0, i, count;
+	struct environment env;
+	struct list *link;
+	const char *prefix;
 
 	razor_package_get_details(set, package,
 				  RAZOR_DETAIL_PREUNPROG, &program,
@@ -535,7 +565,22 @@
 				  RAZOR_DETAIL_POSTUN, &script,
 				  RAZOR_DETAIL_LAST);
 
-	return razor_run_script(root, RAZOR_PROPERTY_POSTUN, program, script);
+	environment_init(&env);
+	link = list_first(&package->install_prefixes, &set->prefix_pool);
+	for (i = 0; link; i++) {
+		prefix = (const char *)set->string_pool.data + link->data;
+		sprintf(buffer, "RPM_INSTALL_PREFIX%d", i);
+		environment_add_variable(&env, buffer, prefix);
+		link = list_next(link);
+	}
+	environment_set(&env);
+
+	retval = razor_run_script(root, RAZOR_PROPERTY_POSTUN, program, script);
+
+	environment_unset(&env);
+	environment_release(&env);
+
+	return retval;
 }
 
 RAZOR_EXPORT const char *