diff --git a/CleanSpec.mk b/CleanSpec.mk
index e0c826c..acd5273 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -405,6 +405,11 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/lib*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/vendor/lib*)
 
+# Revert that move
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/lib*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/vendor/lib*)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/base_rules.mk b/core/base_rules.mk
index 1763a06..c65d3ce 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -78,8 +78,6 @@
 endif
 endif
 
-my_module_is_soong := $(if $(filter $(OUT_DIR)/soong/%,$(LOCAL_MODULE_MAKEFILE)),true,false)
-
 # Ninja has an implicit dependency on the command being run, and kati will
 # regenerate the ninja manifest if any read makefile changes, so there is no
 # need to have dependencies on makefiles.
@@ -165,14 +163,6 @@
 endif
 my_module_path := $(patsubst %/,%,$(my_module_path))
 my_module_relative_path := $(strip $(LOCAL_MODULE_RELATIVE_PATH))
-
-# my_module_default_path is the path that is automatically chosen according to the attributes of
-# a module. It is used when the module does not explicitly specify install path using LOCAL_MODULE_PATH.
-# If LOCAL_MODULE_PATH is specified, it is always respected and my_module_default_path is
-# ignored. However, for shared libraries, such conflict generates warning so that module owner
-# can place the library in the correct location (, stop using LOCAL_MODULE_PATH, or migrate to Soong to
-# be better).
-my_module_default_path :=
 ifdef LOCAL_IS_HOST_MODULE
   partition_tag :=
 else
@@ -190,137 +180,20 @@
   partition_tag := $(if $(call should-install-to-system,$(my_module_tags)),,_DATA)
 endif
 endif
-install_path_var := $(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)OUT$(partition_tag)_$(LOCAL_MODULE_CLASS)
-ifeq (true,$(LOCAL_PRIVILEGED_MODULE))
-  install_path_var := $(install_path_var)_PRIVILEGED
-endif
-
-my_module_default_path := $($(install_path_var))
-ifeq ($(strip $(my_module_path)$(my_module_default_path)),)
-  $(call pretty-error,internal error in base_rules.mk; $(install_path_var) is not defined.)
-endif
-
-# Determine lib_type and do some sanity checks.
-ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
-  ifneq ($(filter $(LOCAL_MODULE),$(addprefix lib,$(NDK_PREBUILT_SHARED_LIBRARIES))),)
-    ifneq ($(partition_tag),)
-      $(call pretty-error,"NDK library must be installed at system partition, where other libraries will look for it. It cannot be moved.")
-    endif
-    lib_type := ndk
-  else ifneq ($(filter $(LOCAL_MODULE),$(VNDK_LIBRARIES) $(VNDK_INDIRECT_LIBRARIES)),)
-    ifneq ($(partition_tag),)
-      $(call pretty-error,"VNDK library must be installed at system partition. DO NOT modify VNDK_LIBRARIES or VNDK_LIBRARIES. \
-If your library needs to be shared between system.img and vendor.img then define it as a VNDK-ext library. Use vndk_ext_library {...} \
-in Android.bp to do so.")
-    endif
-    lib_type := vndk
-  else ifneq ($(filter $(LOCAL_MODULE),$(BOARD_SAME_PROCESS_HAL_DEPS)),)
-    # List of libraries implementing same-process HALs (and their internal sub-libraries) is
-    # defined by vendors.
-    ifeq ($(partition_tag),)
-      $(call pretty-error,Sameprocess HAL must not be installed at system partition)
-    endif
-    lib_type := sameprocess_hal
-  else ifeq ($(LOCAL_IS_HOST_MODULE)$(partition_tag),)
-    lib_type := framework
-  else ifneq ($(partition_tag),_DATA)
-    # Here, vendor means vendor/oem/odm
-    lib_type := vendor_provided
-  else
-    # Test, samples lib falls into this. No lib_type required for them.
-    ifeq ($(filter tests samples,$(LOCAL_MODULE_TAGS)),)
-      $(call pretty-warning,Cannot determine the type of this library)
-    endif
-    lib_type :=
-  endif
-else
-  lib_type :=
-endif
-
-# This is the default path until N. From O, the default path is changed.
-# Let's save the old default path in case we need a symlink to it later.
-my_module_pre_o_default_path := $(my_module_default_path)
-
-# Special case for pre_o_default_path of Soong defined modules.
-# For those modules, we guess their pre_o_default_path by removing /ndk, /vndk, etc.
-# from their LOCAL_MODULE_PATH. This is because relative_install_path is already
-# embedded to my_module_path.
-ifeq ($(my_module_is_soong),true)
-ifndef LOCAL_IS_HOST_MODULE
-ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
-  my_module_pre_o_default_path := $(my_module_path)
-  my_module_pre_o_default_path := $(subst /vndk-ext,,$(my_module_pre_o_default_path))
-  my_module_pre_o_default_path := $(subst /vndk,,$(my_module_pre_o_default_path))
-  my_module_pre_o_default_path := $(subst /ndk,,$(my_module_pre_o_default_path))
-  my_module_pre_o_default_path := $(subst /sameprocess,,$(my_module_pre_o_default_path))
-endif
-endif
-endif
-
-# Amend the default_path once again depending on lib_type. This is new from O.
-ifeq ($(lib_type),vndk)
-  my_module_default_path := $(my_module_default_path)/vndk
-  # TODO(b/35020246): before P, we should support installing two snapshots of VNDK
-  # libraries. One for framework libs and execs and the other for vendor libs and execs.
-else ifeq ($(lib_type),ndk)
-  my_module_default_path := $(my_module_default_path)/ndk
-else ifeq ($(lib_type),sameprocess_hal)
-  my_module_default_path := $(my_module_default_path)/sameprocess
-endif
-
-# Relative path is appended to path resolved so far
-ifneq ($(my_module_relative_path),)
-  my_module_default_path := $(my_module_default_path)/$(my_module_relative_path)
-  my_module_pre_o_default_path := $(my_module_pre_o_default_path)/$(my_module_relative_path)
-  ifneq ($(my_module_path),)
-    my_module_path := $(my_module_path)/$(my_module_relative_path)
-  endif
-endif
-
-_lib_moved :=
 ifeq ($(my_module_path),)
-  # If LOCAL_MODULE_PATH is not specified, use the automatically determined path.
-  my_module_path := $(my_module_default_path)
+  install_path_var := $(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)OUT$(partition_tag)_$(LOCAL_MODULE_CLASS)
+  ifeq (true,$(LOCAL_PRIVILEGED_MODULE))
+    install_path_var := $(install_path_var)_PRIVILEGED
+  endif
 
-  # Mark if the lib is installed to a different path than before. With this hint,
-  # a symlink is created if BOARD_SYMLINK_FOR_LIBS is true.
-  ifneq ($(my_module_path),$(my_module_pre_o_default_path))
-    _lib_moved := true
-  endif
-else
-  # If LOCAL_MODULE_PATH is specified, we respect it.
-  ifndef LOCAL_IS_HOST_MODULE
-  ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
-  ifeq ($(filter $(TARGET_OUT_DATA)%,$(my_module_path)),)
-    # However, we are kind enough to warn if it seems to be wrong.
-    # Warn only for Android.mk defined shared libraries that will be installed
-    # to system or vendor partition. For other types of files - especially
-    # Soong-defined libs -, we don't warn because Soong always gives us correct
-    # paths.
-    ifeq ($(my_module_is_soong),false)
-      ifneq ($(my_module_path),$(my_module_default_path))
-        ifeq ($(SHOW_MODULE_PATH_WARNINGS),true)
-        # TODO(b/35020635): s/warning/error/
-        $(call pretty-warning,$(lib_type) library must be installed to \
-$(subst $(PRODUCT_OUT)/,,$(my_module_default_path)) but requested to be installed at \
-$(subst $(PRODUCT_OUT)/,,$(my_module_path)). Please fix.)
-        endif
-      endif
-    else
-      # For Soong-defined module, symlink is provided if the path has been amended
-      # ...except for vndk-ext libraries because there already is a symlink for the
-      # vndk (unmodified) version of the vndk-ext library.
-      ifneq ($(my_module_path),$(my_module_pre_o_default_path))
-        ifeq ($(filter vndk-ext,$(subst /,$(space),$(my_module_path))),)
-          _lib_moved := true
-        endif
-      endif
-    endif
-  endif
-  endif
+  my_module_path := $($(install_path_var))
+  ifeq ($(strip $(my_module_path)),)
+    $(error $(LOCAL_PATH): unhandled install path "$(install_path_var) for $(LOCAL_MODULE)")
   endif
 endif
-
+ifneq ($(my_module_relative_path),)
+  my_module_path := $(my_module_path)/$(my_module_relative_path)
+endif
 endif # not LOCAL_UNINSTALLABLE_MODULE
 
 ifneq ($(strip $(LOCAL_BUILT_MODULE)$(LOCAL_INSTALLED_MODULE)),)
@@ -511,30 +384,8 @@
 
 # Rule to install the module's companion symlinks
 my_installed_symlinks := $(addprefix $(my_module_path)/,$(LOCAL_MODULE_SYMLINKS) $(LOCAL_MODULE_SYMLINKS_$(my_32_64_bit_suffix)))
-
-# If this lib is installed to the different directory than before,
-# make a symlink from the old path to the new path.
-# This symlink is required because there are so many plances that expect the old
-# path (e.g. systemproperty rild.libpath). Until that places are all fixed,
-# we keep this symlink.
-# TODO(b/34917183): remove symlinks after everything migrations to the new paths;
-# this should be done before O launch unless it will be a security hole that
-# we can't restrict access to a certain set of libraries by using the directory
-# path.
-ifneq ($(BOARD_SYMLINK_FOR_LIBS),false)
-ifeq ($(_lib_moved),true)
-  my_installed_symlinks += $(my_module_pre_o_default_path)/$(my_installed_module_stem)
-endif
-else
-# Symlinks for ndk libs are permanent.
-ifeq ($(lib_type)$(_lib_moved),ndktrue)
-  my_installed_symlinks += $(my_module_pre_o_default_path)/$(my_installed_module_stem)
-endif
-endif
-
-# Make a symlink $(symlink) -> $(LOCAL_INSTALLED_MODULE)
 $(foreach symlink,$(my_installed_symlinks),\
-    $(call symlink-file,$(LOCAL_INSTALLED_MODULE),$(LOCAL_INSTALLED_MODULE),$(symlink),true))
+    $(call symlink-file,$(LOCAL_INSTALLED_MODULE),$(my_installed_module_stem),$(symlink)))
 
 $(my_all_targets) : | $(my_installed_symlinks)
 
diff --git a/core/definitions.mk b/core/definitions.mk
index 7fd677b..62942ee 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2853,10 +2853,8 @@
 
 # Define a rule to create a symlink to a file.
 # $(1): full path to source
-# $(2): target of the link
-# $(3): full path of the symlink
-# $(4): (optional) when set to true, $(2) is recognized as a path from the build root and
-#       thus -r option is used to link $(3) to $(2). Off by default.
+# $(2): source (may be relative)
+# $(3): full path to destination
 define symlink-file
 $(eval $(_symlink-file))
 endef
@@ -2868,9 +2866,7 @@
 	@echo "Symlink: $$@ -> $(2)"
 	@mkdir -p $(dir $$@)
 	@rm -rf $$@
-	$(if $(filter true,$(4)),\
-            $(hide) python -c "import os.path; import os; os.symlink(os.path.relpath('$(2)','$(dir $(3))'), '$$@')",\
-            $(hide) ln -sf $(2) $$@)
+	$(hide) ln -sf $(2) $$@
 endef
 
 ###########################################################
diff --git a/core/soong_config.mk b/core/soong_config.mk
index ff8a51d..576c8ab 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -69,9 +69,7 @@
 	echo ''; \
 	echo '    "ArtUseReadBarrier": $(if $(filter false,$(PRODUCT_ART_USE_READ_BARRIER)),false,true),'; \
 	echo ''; \
-	echo '    "BtConfigIncludeDir": "$(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR)",'; \
-	echo ''; \
-	echo '    "SameProcessHalDeps": [$(if $(BOARD_SAME_PROCESS_HAL_DEPS),"$(subst $(space),"$(comma)",$(BOARD_SAME_PROCESS_HAL_DEPS))")]'; \
+	echo '    "BtConfigIncludeDir": "$(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR)"'; \
 	echo '}') > $(SOONG_VARIABLES_TMP); \
 	if ! cmp -s $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); then \
 	  mv $(SOONG_VARIABLES_TMP) $(SOONG_VARIABLES); \