gnu: Add lc0.

* gnu/packages/lc0.scm: New file.
* gnu/packages/local.mk: Register file.

Change-Id: Ib3a8719c4e4da69e2ad5e9d5dd14307197973c7f
Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu/local.mk

@@ -424,6 +424,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/kerberos.scm			\
   %D%/packages/kodi.scm				\
   %D%/packages/language.scm			\
+  %D%/packages/lc0.scm			\
   %D%/packages/lean.scm				\
   %D%/packages/lego.scm				\
   %D%/packages/less.scm				\

gnu/packages/lc0.scm

@@ -0,0 +1,72 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2023 zamfofex <zamfofex@twdb.moe>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages lc0)
+  #:use-module (guix build-system meson)
+  #:use-module (guix gexp)
+  #:use-module (guix git-download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages algebra)
+  #:use-module (gnu packages c)
+  #:use-module (gnu packages check)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages machine-learning)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages python))
+
+(define-public lc0
+  (package
+    (name "lc0")
+    (version "0.30.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/LeelaChessZero/lc0")
+                    (commit (string-append "v" version))
+                    ;; Only a few source files are in one Git submodules
+                    ;; (rather than there being bundled projects).  These
+                    ;; files are in a different repository just because they
+                    ;; are used across multiple repositories of the Leela
+                    ;; Chess Zero project.
+                    (recursive? #t)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1m7k8m8iz4pxv3h9g2j1dkgryi4k9c1bcg3fx5j7ii4ysif63kj3"))))
+    (build-system meson-build-system)
+    (arguments
+     (list
+      #:configure-flags
+      #~(list "-Ddnnl=true"
+              (string-append "-Ddnnl_dir="
+                             #$(this-package-input "oneapi-dnnl")))))
+    (native-search-paths
+     (list (search-path-specification
+            (variable "XDG_DATA_DIRS")
+            (files '("share")))))
+    (inputs (list eigen oneapi-dnnl zlib))
+    (native-inputs (list googletest ispc pkg-config python))
+    (synopsis "Chess engine based on neural networks")
+    (description
+     "Leela Chess Zero is a UCI-compliant chess engine designed to play chess
+using neural networks.  This package does not provide a neural network, which
+is necessary to use Leela Chess Zero and should be installed separately.")
+    (home-page "https://lczero.org")
+    (license license:gpl3+)))