+#define ZPM_HASH_STRLEN 64
+
+#ifdef PATH_MAX
+#define ZPM_PATH_MAX PATH_MAX
+#else
+#define ZPM_PATH_MAX 256
+#endif
+
+#define ZPM_PACKAGE_NAME_MAX 191
+#define ZPM_PACKAGE_VERSION_MAX 58
+#define ZPM_PACKAGE_RELEASE_MAX 4
+#define ZPM_PACKAGE_ID_MAX 255
+
+#define ZPM_TAG_MAX 15
+
+struct zpm_package;
+