From ae54659a339acf54477690a6b24ced92f6f8b8a3 Mon Sep 17 00:00:00 2001
From: Yihui Xie <xie@yihui.name>
Date: Tue, 8 Sep 2020 21:53:24 -0500
Subject: [PATCH] install ghostscript for pdf cropping to work:
 https://github.com/yihui/knitr/issues/954

---
 .travis.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 267a6c1f9..cadb0c13f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,11 @@ language: r
 cache: packages
 pandoc_version: 1.19.2.1
 
+addons:
+  apt:
+    packages:
+    - ghostscript
+
 before_script:
   - chmod +x ./_build.sh
   - chmod +x ./_deploy.sh