Re: [PATCH 0/4]: Add various audio libraries

[Ricardo Wurmus <rekado@elephly.net>]

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Ludovic Courtès writes:
>> From 3bb3b7346f44f8e4849efc7a5fc8b465a974d625 Mon Sep 17 00:00:00 2001
>> From: rekado <rekado@elephly.net>
>> Date: Thu, 29 Jan 2015 10:12:00 +0100
>> Subject: [PATCH 4/4] gnu: Add LV2.
>>
>> * gnu/packages/audio.scm (lv2): New variable.
>
> [...]
>
>> +    (synopsis "LV2 audio plugin standard")
>> +    (description
>> +     "LV2 is an open standard for audio plugins and host applications.  At its
>> +core, LV2 is a simple stable interface, accompanied by extensions which add
>> +functionality to support the needs of increasingly powerful audio software.")
>
> It’s not clear to me what this all means; I guess LV2 is not a
> “standard” as in RFC or ISO, because it’s software.  That said, I don’t
> have any suggestions, so I’ll leave it up to your creativity.  :-)

I changed it from "standard" to "specification" because it's neither a
"standard" in RFC or ISO sense, nor is it software.  It's ttl files that
outline feature.  These specifications can be turned into code or
workable data; they serve as an interface declaration, so I think
"specification" is really the most appropriate term here.

Attached is the new patch.

~~ Ricardo


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From 02ae9dbb1c344187d0b9e5328533a8aed16d081a Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Thu, 5 Feb 2015 22:40:06 +0100
Subject: [PATCH] gnu: Add LV2.

* gnu/packages/audio.scm (lv2): New variable.
---
 gnu/packages/audio.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 9227367..f83c5d2 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -158,3 +158,33 @@ synchronous execution of all clients, and low latency operation.")
      "liblo is a lightweight library that provides an easy to use
 implementation of the Open Sound Control (OSC) protocol.")
     (license license:lgpl2.1+)))
+
+(define-public lv2
+  (package
+    (name "lv2")
+    (version "1.10.0")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "http://lv2plug.in/spec/lv2-"
+                                 version
+                                 ".tar.bz2"))
+             (sha256
+              (base32
+               "1md41x9snrp4mcfyli7lyfpvcfa78nfy6xkdy84kppnl8m5qw378"))))
+    (build-system waf-build-system)
+    (arguments
+     `(#:tests? #f  ; no check target
+       #:configure-flags '("--lv2-system")))
+    (inputs
+     ;; Leaving off cairo and gtk+-2.0 which are needed for example plugins
+     `(("libsndfile" ,libsndfile)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "http://lv2plug.in/")
+    (synopsis "LV2 audio plugin specification")
+    (description
+     "LV2 is an open specification for audio plugins and host applications.
+At its core, LV2 is a simple stable interface, accompanied by extensions which
+add functionality to support the needs of increasingly powerful audio
+software.")
+    (license license:isc)))
-- 
2.1.0