Julius is a speech recognition tool. Package uses a custom license.

From e01acf44822c57cf2af4678007ddd6a70b61ce1e Mon Sep 17 00:00:00 2001
From: Amar Singh <nly@disroot.org>
Date: Sun, 21 Apr 2019 19:37:37 +0530
Subject: [PATCH] gnu: Add julius.

* gnu/packages/speech.scm (julius): New variable.
---
 gnu/packages/speech.scm | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/gnu/packages/speech.scm b/gnu/packages/speech.scm
index 2d6c63e3f9..a99be8a0aa 100644
--- a/gnu/packages/speech.scm
+++ b/gnu/packages/speech.scm
@@ -33,9 +33,11 @@
 #:use-module (gnu packages gcc)
 #:use-module (gnu packages glib)
 #:use-module (gnu packages linux)
+ #:use-module (gnu packages perl)
 #:use-module (gnu packages pkg-config)
 #:use-module (gnu packages pulseaudio)
 #:use-module (gnu packages python)
+ #:use-module (gnu packages sdl)
 #:use-module (gnu packages textutils))
 (define-public espeak
@@ -119,6 +121,43 @@ It is based on the eSpeak engine and supports spectral and Klatt formant
 synthesis, and the ability to use MBROLA voices.")
 (license license:gpl3+)))
+(define-public julius
+ (package
+ (name "julius")
+ (version "8c60cb8c")
+ (source
+ (origin
+ (method git-fetch)
+ (uri
+ (git-reference
+ (url "https://github.com/julius-speech/julius")
+ (commit version)))
+ (file-name
+ (git-file-name name version))
+ (sha256
+ (base32
+ "11qbp9kid251lx6li4fv1r6l0pixxcs1m00sax1z057bhcv4jc7a"))))
+ (build-system gnu-build-system)
+ (arguments
+ `(#:phases
+ (modify-phases %standard-phases
+ (delete 'check))))
+ (inputs
+ `(("alsa-lib" ,alsa-lib)
+ ("zlib" ,zlib)
+ ("sdl2" ,sdl2)
+ ("perl" ,perl)))
+ (home-page "https://github.com/julius-speech/")
+ (synopsis "Open-Source Large Vocabulary Continuous Speech
+Recognition Engine")
+ (description
+ "Julius is a high-performance, small-footprint large vocabulary continuous
+ speech recognition (LVCSR) decoder software for speech-related researchers and
+developers.")
+ (license
+ (license:non-copyleft "http://julius.osdn.jp/LICENSE.txt"
+ "Julius-Modified-BSD-4Clause"))))
+
 (define-public mitlm
 (package
 (name "mitlm")
-- 
2.21.0