Add print-ready PDF (#127)

book/book.toml

@@ -39,8 +39,44 @@ header-includes = [
   "\\DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\\\\{\\},fontsize=\\small}",
 ]
 
+[output.pandoc.profile.paperback]
+output-file = "100-exercises-to-learn-rust.pdf"
+to = "latex"
+highlight-style = "monochrome"
+# We use `lualatext` because, right now, it's the only engine
+# that supports fallback fonts, which we need for emojis.
+pdf-engine = "lualatex"
+
+[output.pandoc.profile.paperback.variables]
+subtitle = "A hands-on course by Mainmatter"
+# You can get these fonts here: https://fonts.google.com/selection?query=noto+color+
+mainfont = "Noto Serif"
+sansfont = "Noto Sans"
+monofont = "Noto Sans Mono"
+mainfontfallback = ["Noto Color Emoji:mode=harf"]
+sansfontfallback = ["Noto Color Emoji:mode=harf"]
+monofontfallback = [
+  "Noto Color Emoji:mode=harf",
+]
+urlstyle = "rm"
+documentclass = "book"
+fontsize = "11pt"
+geometry = "papersize={8in,10in},top=2cm,bottom=2cm,left=2.4cm,right=2.4cm"
+header-includes = [
+  # Reduce font size of code blocks
+  "\\DefineVerbatimEnvironment{Highlighting}{Verbatim}{commandchars=\\\\\\{\\},fontsize=\\small}",
+]
+links-as-notes = true
+
 [output.html]
 git-repository-url = "https://github.com/mainmatter/100-exercises-to-learn-rust"
 
 [preprocessor.exercise-linker]
 exercise_root_url = "https://github.com/mainmatter/100-exercises-to-learn-rust/tree/main/exercises"
+
+[preprocessor.link-shortener]
+base_url = "https://ruex.io"
+renderers = ["pandoc"]
+mapping = "link2alias.json"
+verify = false
+after = ["exercise-linker"]