GNU bug report logs - #69165
[PATCH v2 06/23] gnu: Add ghc-splitmix-bootstrap-for-9.6

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Saku Laesvuori <saku <at> laesvuori.fi>
To: guix-patches <at> gnu.org,
	67921 <at> debbugs.gnu.org
Cc: Saku Laesvuori <saku <at> laesvuori.fi>
Subject: [PATCH v2 06/23] gnu: Add ghc-splitmix-bootstrap-for-9.6
Date: Thu, 15 Feb 2024 10:49:47 +0200

* gnu/packages/haskell.scm (ghc-splitmix-bootstrap-for-9.6): New
  variable.

Change-Id: I65584aa893975015dc44491b120636844af801de
---
 gnu/packages/haskell.scm | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 307231e8f3..ce3ca5083d 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -1601,4 +1601,36 @@ (define ghc-hashable-bootstrap-for-9.6
 combine hash values.")
     (license license:bsd-3)))
 
+(define ghc-splitmix-bootstrap-for-9.6
+  (package
+    (name "ghc-splitmix-bootstrap")
+    (version "0.1.0.5")
+    (source (origin
+              (method url-fetch)
+              (uri (hackage-uri "splitmix" version))
+              (sha256
+               (base32
+                "00ihw7vji8ydik7f5lk9iwj21j829lpl22wa4nqz2igg26b7mw4x"))))
+    (build-system haskell-build-system)
+    (properties '((upstream-name . "splitmix")))
+    (arguments
+     `(#:tests? #f
+       #:haskell ,ghc-bootstrap-for-9.6))
+    (home-page "http://hackage.haskell.org/package/splitmix")
+    (synopsis "Fast and splittable pseudorandom number generator")
+    (description
+     "This package provides a Pure Haskell implementation of the
+SplitMix pseudorandom number generator.  SplitMix is a \"splittable\"
+pseudorandom number generator that is quite fast: 9 64-bit
+arithmetic/logical operations per 64 bits generated.  SplitMix is tested
+with two standard statistical test suites (DieHarder and TestU01, this
+implementation only using the former) and it appears to be adequate for
+\"everyday\" use, such as Monte Carlo algorithms and randomized data
+structures where speed is important.  In particular, it @strong{should not
+be used for cryptographic or security applications}, because generated
+sequences of pseudorandom values are too predictable (the mixing functions
+are easily inverted, and two successive outputs suffice to reconstruct the
+internal state).")
+    (license license:bsd-3)))
+
 ;;; haskell.scm ends here
-- 
2.41.0

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