diff --git a/make/defs.mk b/make/defs.mk
index fada83bd..8097169a 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -175,12 +175,6 @@ PKG_VENDOR                  ?= janware GmbH
 
 # ----- packaging variables
 
-ifneq ($(findstring $(OS_NAME),debian ubuntu),)
-  PKG_FORMAT                ?= debian
-else
-  PKG_FORMAT                ?= rpm
-endif
-
 PKG_SH_EXE                  := /bin/bash $(JWB_SCRIPT_DIR)/pkg.sh
 LOG_INSTALL_SH              := $(PKG_SH_EXE) log-install -f $(PKG_FORMAT)
 UPDATE_REPO_SH              := /opt/packager-server/bin/packager-server schedule-rebuild
diff --git a/make/platform.mk b/make/platform.mk
index 374bf8a2..cb6a4dd6 100644
--- a/make/platform.mk
+++ b/make/platform.mk
@@ -72,21 +72,16 @@ endif
 # -- arch, vendor, os, libc
 
 ifeq ($(HOST_TUPLE),)
-  HOST_TUPLE                := $(shell $(JW_PKG_PY) distro info --format '%{gnu-triplet}')
-  HOST_TUPLE_WORDS          := $(subst -, ,$(HOST_TUPLE))
-  HOST_ARCH                 := $(word 1,$(HOST_TUPLE_WORDS))
-  HOST_VENDOR               := $(word 2,$(HOST_TUPLE_WORDS))
-  HOST_OS                   := $(word 3,$(HOST_TUPLE_WORDS))
-  HOST_ABI                  := $(word 4,$(HOST_TUPLE_WORDS))
-  HOST_TRIPLET              := $(HOST_ARCH)-$(HOST_OS)-$(HOST_ABI)
-else
-  HOST_TUPLE_WORDS          := $(subst -, ,$(HOST_TUPLE))
-  HOST_ARCH                 := $(word 1,$(HOST_TUPLE_WORDS))
-  HOST_VENDOR               := $(word 2,$(HOST_TUPLE_WORDS))
-  HOST_OS                   := $(word 3,$(HOST_TUPLE_WORDS))
-  HOST_ABI                  := $(word 4,$(HOST_TUPLE_WORDS))
-  HOST_TRIPLET              := $(HOST_ARCH)-$(HOST_OS)-$(HOST_ABI)
+  HOST_TUPLE                := $(shell $(JW_PKG_PY) distro info --format '%{gnu-triplet} %{cascade}')
 endif
+HOST_TUPLE_WORDS            := $(subst -, ,$(HOST_TUPLE))
+HOST_ARCH                   := $(word 1,$(HOST_TUPLE_WORDS))
+HOST_VENDOR                 := $(word 2,$(HOST_TUPLE_WORDS))
+HOST_OS                     := $(word 3,$(HOST_TUPLE_WORDS))
+HOST_ABI                    := $(word 4,$(HOST_TUPLE_WORDS))
+HOST_TRIPLET                := $(HOST_ARCH)-$(HOST_OS)-$(HOST_ABI)
+HOST_OS_CASCADE             := $(wordlist 2,$(words $(HOST_TUPLE)),$(HOST_TUPLE))
+PKG_FORMAT                  ?= $(patsubst pkg-%,%,$(filter pkg-%,$(HOST_OS_CASCADE)))
 
 ifndef TARGET
   ifneq ($(subst mingw,,$(CWD)),$(CWD))