samplet pushed a commit to branch wip-haskell-updates
in repository guix.
commit 2c4733e4c072bc7e28e836b085381143bdb174b2
Author: Timothy Sample <[email protected]>
Date: Thu Oct 31 22:59:23 2019 -0400
gnu: Add ghc-splitmix.
* gnu/packages/haskell-xyz.scm (ghc-splitmix): New variable.
(ghc-splitmix-bootstrap): New variable.
---
gnu/packages/haskell-xyz.scm | 45 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 22e9044..e42c32a 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -9361,6 +9361,51 @@ splitting lists into parts, akin to the @code{split}
function found in several
mainstream languages.")
(license license:bsd-3)))
+(define-public ghc-splitmix
+ (package
+ (name "ghc-splitmix")
+ (version "0.0.3")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append "https://hackage.haskell.org/package/";
+ "splitmix/splitmix-" version ".tar.gz"))
+ (sha256
+ (base32
+ "1k0amgkz7rvyz3lnw7m786ilnr1cibwhx9sc4qynq329gxan5r7w"))))
+ (build-system haskell-build-system)
+ (inputs
+ `(("ghc-random" ,ghc-random)))
+ (native-inputs
+ `(("ghc-hunit" ,ghc-hunit)
+ ("ghc-async" ,ghc-async)
+ ;("ghc-base-compat-batteries" ,ghc-base-compat-batteries)
+ ("ghc-tf-random" ,ghc-tf-random)
+ ("ghc-vector" ,ghc-vector)))
+ (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)))
+
+(define-public ghc-splitmix-bootstrap
+ (package
+ (inherit ghc-splitmix)
+ (name "ghc-splitmix-bootstrap")
+ (arguments `(#:tests? #f))
+ (native-inputs '())
+ (properties '((hidden? #t)))))
+
(define-public ghc-statevar
(package
(name "ghc-statevar")
