Kakoune uses gzip to compress its manpages, but this saves the original time
stamp into the file. If we add --no-name to the uses of gzip then we get a
reproducible build.

--- a/src/Makefile
+++ b/src/Makefile
@@ -71,19 +71,19 @@
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -MD -MP -MF $(addprefix ., $(<:.cc=$(suffix).d)) -c -o $@ $<
 
 # Generate the man page
 ../doc/kak.1.gz: ../doc/kak.1.txt
 	a2x --no-xmllint -f manpage $<
-	gzip -f $(basename $<)
+	gzip -f --no-name $(basename $<)
 
 # Generate the editor's documentation pages
 # Since `a2x` won't generate man pages if some sections are missing (which we don't need),
 # we generate the pages, patch them and then compress them
 ../doc/manpages/%.gz: ../doc/manpages/%.asciidoc
 	a2x --no-xmllint -f manpage $<
 	sed -i -r -e "s,^\.TH .+,.TH KAKOUNE 1 \"\" \"\" \"$(basename $(notdir $<))\"," \
 	-e "/^\.SH \"NAME\"/{N;d;}" $(@:.gz=.1)
-	gzip -f $(@:.gz=.1)
+	gzip -f --no-name $(@:.gz=.1)
 	mv -f $(@:.gz=.1.gz) $@
 
 check: test
 test: