>From b128348ff8ea51b957f5bb811f88850ed541186c Mon Sep 17 00:00:00 2001
From: Michael Rohleder <mike@rohleder.de>
Date: Tue, 6 Oct 2020 12:22:33 +0200
Subject: [PATCH] gnu: stockfish: Update to 12.
* gnu/packages/games.scm (stockfish): Update to 12.
[inputs]: Add fetching of the official neural network file.
[arguments]: Add phase 'copy-net to copy this file and embedd it.
---
gnu/packages/games.scm | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
@@ -11409,7 +11409,7 @@ etc. You can also play games on FICS or against an engine.")
(define-public stockfish
(package
(name "stockfish")
- (version "11")
+ (version "12")
(source
(origin
(method git-fetch)
@@ -11418,8 +11418,15 @@ etc. You can also play games on FICS or against an engine.")
(commit (string-append "sf_" version))))
(file-name (git-file-name name version))
(sha256
- (base32 "12mppipinymj8s1ipq9a7is453vncly49c32ym9wvyklsgyxfzlk"))))
+ (base32 "0vcymbwp5nf114pp3ax40s21ki5dckda15vmhr77d1mnq3fn0l32"))))
(build-system gnu-build-system)
+ (inputs
+ `(("neural-network"
+ ,(origin
+ (method url-fetch)
+ (uri "https://tests.stockfishchess.org/api/nn/nn-82215d0fd0df.nnue")
+ (sha256
+ (base32 "1r4yqrh4di05syyhl84hqcz84djpbd605b27zhbxwg6zs07ms8c2"))))))
(arguments
`(#:tests? #f
#:make-flags (list "-C" "src"
@@ -11435,7 +11442,14 @@ etc. You can also play games on FICS or against an engine.")
("mips64el-linux" "general-64")
(_ "general-32"))))
#:phases (modify-phases %standard-phases
- (delete 'configure))))
+ (delete 'configure)
+ ;; The official neural network file is needed for building
+ ;; and is embedded in the resulting binary.
+ (add-after 'unpack 'copy-net
+ (lambda* (#:key inputs #:allow-other-keys)
+ (copy-file (assoc-ref inputs "neural-network")
+ "src/nn-82215d0fd0df.nnue")
+ #t)))))
(synopsis "Strong chess engine")
(description
"Stockfish is a very strong chess engine. It is much stronger than the
--
2.28.0