only call for convert

Author: adrn

Makefile

@@ -3,7 +3,8 @@ default: build
 TUTORIALS_MAIN_BRANCH ?= main
 MODIFIED := $(shell python .github/get_modified_tutorials.py --main-branch $(TUTORIALS_MAIN_BRANCH))
 
-FLAGS = --flatten --build-path=. --preprocessors=nbconvert.preprocessors.ExtractOutputPreprocessor -v
+FLAGS = --flatten --build-path=. -v
+CONVERTFLAGS = --make-index --preprocessors=nbconvert.preprocessors.ExtractOutputPreprocessor --index-template=templates/index.tpl
 
 build: envcheck execute convert
 buildall: envcheck executeall convertall
@@ -15,13 +16,13 @@ execute:
 	nbcollection execute --timeout=600 ${FLAGS} ${MODIFIED}
 
 convert:
-	nbcollection convert --make-index --index-template=templates/index.tpl ${FLAGS} ${MODIFIED}
+	nbcollection convert ${CONVERTFLAGS} ${FLAGS} ${MODIFIED}
 
 executeall:
 	nbcollection execute --timeout=600 ${FLAGS} tutorials
 
 convertall:
-	nbcollection convert --make-index --index-template=templates/index.tpl ${FLAGS} tutorials
+	nbcollection convert ${CONVERTFLAGS} ${FLAGS} tutorials
 
 clean:
 	rm -rf _build