ENV_PYTHONPATH       := $(PYTHONPATH)

ifneq ($(DEVELOPMENT),true)
  PY_SITE_PACKAGES_PATH = $(shell python -c "import site; print site.getsitepackages()[0]")
else
  PY_SITE_PACKAGES_PATH = $(PREFIX)/python/site-packages
endif

PY_PREREQ_BUILD      ?= $(shell $(proj_query_cmd) pkg-requires --subsections jw -d ' ' -p --no-version build $(PROJECT))
PY_PREREQ_BUILD_DIRS ?= $(shell $(proj_query_cmd) proj-dir $(PY_PREREQ_BUILD))
PY_PROJ_MODULE_DIRS  ?= $(wildcard $(foreach subdir,/tools/python /src/python,$(addsuffix $(subdir),$(TOPDIR) $(PY_PREREQ_BUILD_DIRS))))
PY_MODULE_DIRS       ?= $(PY_PROJ_MODULE_DIRS)
PY_PROJ_MODULES      += $(dir $(wildcard $(PY_MODULE_DIRS)/*/__init__.py))
PY_MODULES           ?= $(PY_PROJ_MODULES)
PY_SRC_PY             = $(sort $(wildcard *.py) __init__.py)
PY_PYC                = $(patsubst %.py,%.pyc,$(PY_SRC_PY))

PY_INSTALL_PKG_MOD   ?= $(shell pwd | sed 's%.*/python/%%; s%/.*%%')
PY_INSTALL_SUB_MOD   ?= $(shell pwd | sed "s%.*/$(PY_INSTALL_PKG_MOD)\(/\|$$\)%%")
ifneq ($(PY_INSTALL_SUB_MOD),)
  PY_INSTALL_MOD     ?= $(PY_INSTALL_PKG_MOD)/$(PY_INSTALL_SUB_MOD)
else
  PY_INSTALL_MOD     ?= $(PY_INSTALL_PKG_MOD)
endif
PY_MOD               ?= $(subst /,.,$(PY_INSTALL_MOD))
PY_INSTALL_DIR        = $(ENV_PREFIX)$(PY_SITE_PACKAGES_PATH)/$(patsubst .,/,$(PY_INSTALL_MOD))
PY_INSTALLED_REG      = $(addprefix $(PY_INSTALL_DIR)/,$(PY_SRC_PY) $(PY_PYC))

empty                :=
space                := $(empty) $(empty)
PYTHONPATH           ?= $(call proj_query, pythonpath $(PROJECT))
#PYTHONPATH            = $(subst $(space),,$(ENV_PYTHONPATH)$(foreach d,$(PY_MODULE_DIRS),:$(d)))
export PYTHONPATH

all:
echo-py:
	@echo PROJECT = $(PROJECT)
	@echo PY_PROJ_MODULE_DIRS = $(PY_PROJ_MODULE_DIRS)
	@echo PY_MODULE_DIRS = $(PY_MODULE_DIRS)
	@echo PY_SITE_PACKAGES_PATH = $(PY_SITE_PACKAGES_PATH)
	@echo PY_MODULES = $(PY_MODULES)
	@echo PYTHONPATH = $(PYTHONPATH)
	@echo PY_INSTALL_MOD = $(PY_INSTALL_MOD)
	@echo PY_INSTALL_SUB_MOD = $(PY_INSTALL_SUB_MOD)

libpath: py-libpath
py-libpath:
	@echo export PYTHONPATH=$(PYTHONPATH)