try without the hack

.github/workflows/pkgup.yaml

@@ -45,8 +45,8 @@ jobs:
           ls
           R CMD INSTALL $(ls -1t pkgup_*.tar.gz | head -n 1) ## seems to be required
           Rscript -e 'invisible(file.copy("vignettes", "pkgup", recursive=TRUE))'
-          Rscript -e 'reorder_input2 = function(x) {i = is_index(x); index = x[i][which.min(nchar(x[i]))]; c(index, rev(setdiff(x, index)))}; environment(reorder_input2) <- asNamespace("litedown");           assignInNamespace("reorder_input", reorder_input2, ns="litedown"); litedown::fuse_site("pkgup")' ## hacking litedown to rev order so ./vignettes/*.html are generated before their index ./vignettes.html
-                    mkdir -p public
+          Rscript -e 'litedown::fuse_site("pkgup")'
+          mkdir -p public
           find pkgup -name '*.html' -print0 | cpio -pvdmB --null public
           mv public/pkgup/* public
           rm -r public/pkgup