$(INSTALLPY) -m 644 $(addprefix $(src-dir)/,$(INSTALLATION_FILES)) $(DESTDIR)$(INSTALLATION_DIR)/
$(foreach suff, $(INSTALLATION_SUFFIXES), \
($(INSTALLPY) -d $(DESTDIR)$(INSTALLATION_DIR$(suff)) || true) && \
$(INSTALLPY) -m 644 $(addprefix $(src-dir)/,$(INSTALLATION_FILES)) $(DESTDIR)$(INSTALLATION_DIR)/
$(foreach suff, $(INSTALLATION_SUFFIXES), \
($(INSTALLPY) -d $(DESTDIR)$(INSTALLATION_DIR$(suff)) || true) && \