Re: [PATCH 1/4] gnu: Add potrace.

[Eric Bavier]

Ludovic Courtès writes:

> Eric Bavier <address@hidden> skribis:
>
>> From f178a122f3805cbc23119b20c2144cf2a59bed3f Mon Sep 17 00:00:00 2001
>> From: Eric Bavier <address@hidden>
>> Date: Tue, 7 Oct 2014 11:13:35 -0500
>> Subject: [PATCH 1/4] gnu: Add potrace.
>>
>> * gnu/packages/fontutils.scm (potrace): New variable.
>
> This part looks good to me, but...

Ok.

>
>>  gnu/packages/fontutils.scm |   28 ++++++++++++++
>>  gnu/packages/giflib.scm    |   90 
>> ++++++++++++++++++++++++++++++++++++++++++++
>
> What about the giflib.scm changes?  Were they intended?

No, those changes were not intended.

> Perhaps giflib 5.x can be added in image.scm?

I was experimenting with the latest version of fontforge, which can use
giflib 5.x.  For the time being it can be left out.

An updated patch is attached.

>From 6721d6e9e31af8aff5e781d813e55347dea378c9 Mon Sep 17 00:00:00 2001
From: Eric Bavier <address@hidden>
Date: Tue, 7 Oct 2014 12:27:37 -0500
Subject: [PATCH] gnu: Add potrace.

* gnu/packages/fontutils.scm (potrace): New variable.
---
 gnu/packages/fontutils.scm |   28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/gnu/packages/fontutils.scm b/gnu/packages/fontutils.scm
index 5310f3c..321c6dc 100644
--- a/gnu/packages/fontutils.scm
+++ b/gnu/packages/fontutils.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2014 Andreas Enge <address@hidden>
+;;; Copyright © 2014 Eric Bavier <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -197,3 +198,30 @@ process known as shaping.  This process takes an input 
Unicode text string
 and returns a sequence of positioned glyphids from the font.")
    (license license:lgpl2.1+)
    (home-page "http://projects.palaso.org/projects/graphitedev";)))
+
+(define-public potrace
+  (package
+    (name "potrace")
+    (version "1.11")
+    (source
+     (origin
+      (method url-fetch)
+      (uri (string-append "mirror://sourceforge/potrace/potrace-"
+                          version ".tar.gz"))
+      (sha256
+       (base32
+        "1bbyl7jgigawmwc8r14znv8lb6lrcxh8zpvynrl6s800dr4yp9as"))))
+    (build-system gnu-build-system)
+    (native-inputs `(("ghostscript" ,ghostscript))) ;for tests
+    (inputs `(("zlib" ,zlib)))
+    (synopsis "Transform bitmaps into vector graphics")
+    (description
+     "Potrace is a tool for tracing a bitmap, which means, transforming a
+bitmap into a smooth, scalable image.  The input is a bitmap (PBM, PGM, PPM,
+or BMP format), and the default output is an encapsulated PostScript
+file (EPS).  A typical use is to create EPS files from scanned data, such as
+company or university logos, handwritten notes, etc.  The resulting image is
+not \"jaggy\" like a bitmap, but smooth.  It can then be rendered at any
+resolution.")
+    (license license:gpl2+)
+    (home-page "http://potrace.sourceforge.net/";)))
-- 
1.7.9.5

-- 
Eric Bavier