fix: crash on installation of tinytex

Remove automatic installation and raise an error instead with instructions for the user.

Fix #38

R/render_report.R

@@ -36,10 +36,9 @@ render_report <- function(input,
 
   if (output_format == "bookdown::pdf_book") {
     if (!requireNamespace("tinytex", quietly = TRUE)) {
-      install.packages("tinytex")
-    }
-    if (!tinytex::is_tinytex()) {
-      tinytex::install_tinytex()
+      stop("For rendering report in PDF format, you should install tinytex first:\n",
+           "`install.packages('tinytex')`\n",
+           "`tinytex::install_tinytex()`")
     }
     if (file.exists(file.path(input, "_bookdown.yml"))) {
       babel_lang <-