Re: [PATCH] gnu: Add dlib.

[Marius Bakke]

>> +    (build-system cmake-build-system)
>> +    (arguments
>> +     `(#:phases
>> +       (let ((test-dir (string-append "../dlib-" ,version 
>> "/dlib/test/build")))
>
> I think it's better to move this 'let' inside the phase: ...
>
>> +         (modify-phases %standard-phases
>> +           (replace 'check
>> +             ;; No test target, so we build and run the unit tests here.
>> +             (lambda _
>
> ... here.

You're right. I tried that in an early iteration and it failed; I
assumed "version" was not available in that scope. Must have noobed
something else since it works fine now.. :)

>> +               (mkdir-p test-dir)
>> +               (with-directory-excursion test-dir
>> +                 (zero? (system* "cmake" ".."))
>> +                 (zero? (system* "cmake" "--build" "." "--config" 
>> "Release"))
>> +                 (zero? (system* "./dtest" "--runall")))))))))
>
> There is no point in the first 2 'zero?' calls as their returning
> values will be lost, rather:
>
>   (and (zero? (system* "cmake" ".."))
>        (zero? (system* "cmake" "--build" "." "--config" "Release"))
>        (zero? (system* "./dtest" "--runall")))

Thanks for pointing that out; fixed.

>> +    (native-inputs
>> +     `(("pkg-config" ,pkg-config)))
>> +    (inputs
>> +     `(("lapack" ,lapack)
>> +       ("libjpeg" ,libjpeg)
>> +       ("libpng" ,libpng)
>> +       ("libx11" ,libx11)
>> +       ("openblas" ,openblas)
>> +       ("zlib" ,zlib)))
>> +    (synopsis "Toolkit for making machine learning and data analysis 
>> applications in C++")
>> +    (description
>> +     "Dlib is a modern C++ toolkit containing machine learning algorithms 
>> and tools.  It
>> +is used in both industry and academia in a wide range of domains including 
>> robotics,
>> +embedded devices, mobile phones, and large high performance computing 
>> environments.")
>
> As for me, the above lines (in synopsis and description) are too long, I
> would stay inside 72-78 columns.

Disagreeing with the linter, are we? ;) I've trimmed the lengths a bit.

Thanks!

>From 8ffcd39f9c8e3cea7ae925341cc19dc3b45941a3 Mon Sep 17 00:00:00 2001
From: Marius Bakke <address@hidden>
Date: Sat, 13 Aug 2016 11:26:10 +0100
Subject: [PATCH] gnu: Add dlib.

* gnu/packages/machine-learning.scm (dlib): New variable.
---
 gnu/packages/machine-learning.scm | 54 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/machine-learning.scm 
b/gnu/packages/machine-learning.scm
index f96672c..674af10 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2015, 2016 Ricardo Wurmus <address@hidden>
 ;;; Copyright © 2016 Efraim Flashner <address@hidden>
+;;; Copyright © 2016 Marius Bakke <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -32,13 +33,15 @@
   #:use-module (gnu packages compression)
   #:use-module (gnu packages dejagnu)
   #:use-module (gnu packages gcc)
+  #:use-module (gnu packages image)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
   #:use-module (gnu packages statistics)
   #:use-module (gnu packages swig)
-  #:use-module (gnu packages xml))
+  #:use-module (gnu packages xml)
+  #:use-module (gnu packages xorg))
 
 (define-public libsvm
   (package
@@ -467,3 +470,52 @@ geometric models.")
      "This package provides functions for feed-forward neural networks with a
 single hidden layer, and for multinomial log-linear models.")
     (license (list license:gpl2+ license:gpl3+))))
+
+(define-public dlib
+  (package
+    (name "dlib")
+    (version "19.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "http://dlib.net/files/dlib-"; version ".tar.bz2"))
+              (sha256
+               (base32
+                "0p2pvcdalc6jhb6r99ybvjd9x74sclr0ngswdg9j2xl5pj7knbr4"))
+              (modules '((guix build utils)))
+              (snippet
+               '(begin
+                  ;; Delete ~13MB of bundled dependencies.
+                  (delete-file-recursively "dlib/external")
+                  (delete-file-recursively "docs/dlib/external")))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _
+             ;; No test target, so we build and run the unit tests here.
+             (let ((test-dir (string-append "../dlib-" ,version 
"/dlib/test/build")))
+               (mkdir-p test-dir)
+               (with-directory-excursion test-dir
+                 (and (zero? (system* "cmake" ".."))
+                      (zero? (system* "cmake" "--build" "." "--config" 
"Release"))
+                      (zero? (system* "./dtest" "--runall"))))))))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("lapack" ,lapack)
+       ("libjpeg" ,libjpeg)
+       ("libpng" ,libpng)
+       ("libx11" ,libx11)
+       ("openblas" ,openblas)
+       ("zlib" ,zlib)))
+    (synopsis
+     "Toolkit for making machine learning and data analysis applications in 
C++")
+    (description
+     "Dlib is a modern C++ toolkit containing machine learning algorithms and
+tools.  It is used in both industry and academia in a wide range of domains
+including robotics, embedded devices, mobile phones, and large high performance
+computing environments.")
+    (home-page "http://dlib.net";)
+    (license license:boost1.0)))
-- 
2.9.2