Subject: [PATCH 4/5] gnu: calibre: Add optipng as an input.

From: Brendan Tildesley <[email-masked]>
Date: Sat, 4 Nov 2017 02:44:02 +1100

* gnu/packages/ebook.scm (calibre)[inputs]: Add optipng.
---
 gnu/packages/ebook.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/packages/ebook.scm b/gnu/packages/ebook.scm
index a8c6f5975..659ec57d5 100644
--- a/gnu/packages/ebook.scm
+++ b/gnu/packages/ebook.scm
@@ -116,6 +116,7 @@
        ("libusb" ,libusb)
        ("libxrender" ,libxrender)
        ("openssl" ,openssl)
+       ("optipng" ,optipng)
        ("podofo" ,podofo)
        ("poppler" ,poppler)
        ("python" ,python-2)
-- 
2.14.3