dev-haskell/chimera: new package, a depend of arithmoi-0.11

Package-Manager: Portage-3.0.4, Repoman-3.0.1
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

3 files changed, 76 insertions, 0 deletions

diff --git a/dev-haskell/chimera/Manifest b/dev-haskell/chimera/Manifest
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+++ b/dev-haskell/chimera/Manifest
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+DIST chimera-0.3.1.0.tar.gz 13809 BLAKE2B 64a343f84de1cd535676934c26e43994062ea24fdf27463a22b3ff1086480a277fc3f0f87905f9060bca80e46ab0a553e5091cb27065ba0e3321e62800a7756d SHA512 7f155bb3d938331760e8e06c47d67a985588e1817e8b151f6a58074d77a71ce0a70537c55ab3d97c02867d9f2a3ae2f31ed87432e833930b3be6c2f92a8947fc
diff --git a/dev-haskell/chimera/chimera-0.3.1.0.ebuild b/dev-haskell/chimera/chimera-0.3.1.0.ebuild
new file mode 100644
index 000000000000..68d9b6f55253
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+++ b/dev-haskell/chimera/chimera-0.3.1.0.ebuild
@@ -0,0 +1,38 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# ebuild generated by hackport 0.6.4.9999
+
+CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
+inherit haskell-cabal
+
+DESCRIPTION="Lazy infinite streams with O(1) indexing"
+HOMEPAGE="https://github.com/Bodigrim/chimera#readme"
+SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~x86"
+IUSE="+representable"
+
+RDEPEND="dev-haskell/vector:=[profile?]
+	>=dev-lang/ghc-8.0.1:=
+	representable? ( dev-haskell/adjunctions:=[profile?]
+				dev-haskell/distributive:=[profile?]
+				dev-haskell/mtl:=[profile?] )
+"
+DEPEND="${RDEPEND}
+	>=dev-haskell/cabal-1.24.0.0
+	test? ( >=dev-haskell/quickcheck-2.10
+		dev-haskell/tasty
+		dev-haskell/tasty-hunit
+		dev-haskell/tasty-quickcheck
+		dev-haskell/tasty-smallcheck )
+"
+
+src_configure() {
+	haskell-cabal_src_configure \
+		$(cabal_flag representable representable)
+}
diff --git a/dev-haskell/chimera/metadata.xml b/dev-haskell/chimera/metadata.xml
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index 000000000000..317b99f5cc7f
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+++ b/dev-haskell/chimera/metadata.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>haskell@gentoo.org</email>
+		<name>Gentoo Haskell</name>
+	</maintainer>
+	<use>
+		<flag name="representable">Define Representable instance from adjunctions package</flag>
+	</use>
+	<longdescription>
+		There are plenty of memoizing libraries on Hackage, but they
+		usually fall into two categories:
+		
+		* Store cache as a flat array, enabling us
+		to obtain cached values in O(1) time, which is nice.
+		The drawback is that one must specify the size
+		of the array beforehand,
+		limiting an interval of inputs,
+		and actually allocate it at once.
+		* Store cache as a lazy binary tree.
+		Thanks to laziness, one can freely use the full range of inputs.
+		The drawback is that obtaining values from a tree
+		takes logarithmic time and is unfriendly to CPU cache,
+		which kinda defeats the purpose.
+		
+		This package intends to tackle both issues,
+		providing a data type &#39;Chimera&#39; for
+		lazy infinite compact streams with cache-friendly O(1) indexing.
+		
+		Additional features include:
+		
+		* memoization of recursive functions and recurrent sequences,
+		* memoization of functions of several, possibly signed arguments,
+		* efficient memoization of boolean predicates.
+	</longdescription>
+</pkgmetadata>