add debug_dir constant

pisi/build.py

@@ -164,6 +164,9 @@ class Builder:
     def pkg_work_dir(self):
         return self.pkg_dir() + ctx.const.work_dir_suffix
 
+    def pkg_debug_dir(self):
+        return self.pkg_dir() + ctx.const.debug_dir_suffix
+
     def pkg_install_dir(self):
         return self.pkg_dir() + ctx.const.install_dir_suffix
 

pisi/constants.py

@@ -60,6 +60,7 @@ class Constants:
         # directory suffixes for build
         self.__c.work_dir_suffix = "/work"       # these, too, because we might wanna change 'em
         self.__c.install_dir_suffix  = "/install"
+        self.__c.debug_dir_suffix  = "/debug"
 
         # file/directory names
         #note: these don't seem very well, constants are used