Only include latex packages if the feature is used

src/lib/latex.rs

@@ -207,6 +207,10 @@ impl<'a> LatexRenderer<'a> {
             .insert_bool("tex_title", self.book.options.get_bool("tex.title").unwrap())
             .insert_str("papersize", self.book.options.get_str("tex.paper_size").unwrap())
             .insert_bool("stdpage", self.book.options.get_bool("tex.stdpage").unwrap())
+            .insert_bool("use_url", self.book.features.url)
+            .insert_bool("use_tables", self.book.features.table)
+            .insert_bool("use_codeblocks", self.book.features.codeblock)
+            .insert_bool("use_images", self.book.features.image)
             .insert_str("tex_lang", tex_lang);
         if let Ok(tex_tmpl_add) = self.book.options.get_str("tex.template.add") {
             data = data.insert_str("additional_code", tex_tmpl_add);

templates/latex/template.tex

@@ -11,23 +11,35 @@
 \usepackage[<<&tex_lang>>]{babel}
 
 \usepackage{fancyhdr}
+<<#use_tables>>
+% Only included if document contains tables
 \usepackage{tabularx}
-\usepackage{spverbatim}
-\usepackage{graphicx}
+<</use_tables>>
+<<#use_codeblocks>>
+% Only included if document contains code blocks
 \usepackage{color}
 \usepackage[
   topline=false,
   rightline=false,
   bottomline=false]{mdframed}
-<<#initials>> % only if use_initials is set to true
-\usepackage{lettrine}
-<</initials>>
-
+\usepackage{spverbatim}
+<</use_codeblocks>>
+<<#use_images>>
+% Only included if document contains images
+\usepackage{graphicx}
+<</use_images>>
+<<#use_url>>
+% Only included if URLs are used in the document
 \usepackage[colorlinks=true,breaklinks=true,hypertexnames=false]{hyperref}
 
 <<^xelatex>>
 \usepackage[anythingbreaks]{breakurl}
 <</xelatex>>
+<</use_url>>
+
+<<#initials>> % only if use_initials is set to true
+\usepackage{lettrine}
+<</initials>>
 
 <<#stdpage>>
 \usepackage[<<&papersize>>]{geometry}