commit: 9438a19776ea136ba0f91e09b909933ebeb0ba42 Author: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> AuthorDate: Thu Feb 16 08:37:49 2017 +0000 Commit: Sergei Trofimovich <slyfox <AT> gentoo <DOT> org> CommitDate: Thu Feb 16 10:21:55 2017 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9438a197
dev-haskell/lens-simple: new package, a depend of dev-haskell/persistent-2.6 simplified import of elementary lens-family combinators Package-Manager: Portage-2.3.3, Repoman-2.3.1 dev-haskell/lens-simple/Manifest | 1 + dev-haskell/lens-simple/lens-simple-0.1.0.9.ebuild | 30 +++++++++ dev-haskell/lens-simple/metadata.xml | 73 ++++++++++++++++++++++ 3 files changed, 104 insertions(+) diff --git a/dev-haskell/lens-simple/Manifest b/dev-haskell/lens-simple/Manifest new file mode 100644 index 0000000000..134046fb83 --- /dev/null +++ b/dev-haskell/lens-simple/Manifest @@ -0,0 +1 @@ +DIST lens-simple-0.1.0.9.tar.gz 4541 SHA256 613d99b8074197f8a026a641a9940dd188e0d81e808169f420981a9ca15b832a SHA512 3bf1079f4525b534bca70f83073ebb8abbc84cd9320ef97a1fb137914fcb614f8d7c8ea7065a4484539dc6240ab1aa393ee22ed3b9e20bc421d25ce7adadbd0c WHIRLPOOL ceb39146bd4b6ce79c86c2f4b919c8f5245fb276fb1e0131c6b19ec5e1777334d7b44527fc3e26524eaf76d7d9b91f507c3050aec31253e5db2eef6109c00314 diff --git a/dev-haskell/lens-simple/lens-simple-0.1.0.9.ebuild b/dev-haskell/lens-simple/lens-simple-0.1.0.9.ebuild new file mode 100644 index 0000000000..29b349f37d --- /dev/null +++ b/dev-haskell/lens-simple/lens-simple-0.1.0.9.ebuild @@ -0,0 +1,30 @@ +# Copyright 1999-2017 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# $Id$ + +EAPI=6 + +# ebuild generated by hackport 0.5.9999 + +CABAL_FEATURES="lib profile haddock hoogle hscolour" +inherit haskell-cabal + +DESCRIPTION="simplified import of elementary lens-family combinators" +HOMEPAGE="https://github.com/michaelt/lens-simple"; +SRC_URI="mirror://hackage/packages/archive/${PN}/${PV}/${P}.tar.gz" + +LICENSE="BSD" +SLOT="0/${PV}" +KEYWORDS="~amd64 ~x86" +IUSE="" + +RDEPEND=">=dev-haskell/lens-family-1.2:=[profile?] <dev-haskell/lens-family-1.3:=[profile?] + >=dev-haskell/lens-family-core-1.2:=[profile?] <dev-haskell/lens-family-core-1.3:=[profile?] + <dev-haskell/lens-family-th-0.6:=[profile?] + >=dev-haskell/mtl-2.1:=[profile?] <dev-haskell/mtl-2.3:=[profile?] + >=dev-haskell/transformers-0.2.0:=[profile?] <dev-haskell/transformers-6:=[profile?] + >=dev-lang/ghc-7.4.1:= +" +DEPEND="${RDEPEND} + >=dev-haskell/cabal-1.10 +" diff --git a/dev-haskell/lens-simple/metadata.xml b/dev-haskell/lens-simple/metadata.xml new file mode 100644 index 0000000000..17f85a4e3a --- /dev/null +++ b/dev-haskell/lens-simple/metadata.xml @@ -0,0 +1,73 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd";> +<pkgmetadata> + <maintainer type="project"> + <email>hask...@gentoo.org</email> + <name>Gentoo Haskell</name> + </maintainer> + <longdescription> + This module, <http://hackage.haskell.org/package/lens-simple/docs/Lens-Simple.html Lens.Simple>, + just re-exports the main modules from Russell O\'Connor's + <http://hackage.haskell.org/package/lens-family lens-family> package, the + original van Laarhoven-O'Connor lens library. + @lens-family@ is particularly remarkable for its minute number of dependencies: + (apart from <http://hackage.haskell.org/package/mtl mtl> + they are all ghc \'boot\' libraries); but more importantly for its + extreme conceptual simplicity and theoretical soundness. Much of + the material it contains is well-explained, from a tutorial point of view, by + <http://hackage.haskell.org/package/lens-tutorial lens-tutorial> It is independent, + self-standing and readily intelligible apart from any darker + more general system of combinators that might attempt to extend it. Much + of it ought to be in the Prelude. + + Convenient import of the elementary combinators from @lens-family@, + however, a little complicated. The idea of this trivial module, then, is just to make a sort of + low-powered, minimal-dependency, @lens-family@ equivalent of + the 800 lb gorilla of lens library imports: + + > import Control.Lens + + namely, the light-weight and elegant: + + > import Lens.Simple + + Check it out, it's even one character shorter! + + The material in <http://hackage.haskell.org/package/lens-tutorial lens-tutorial> + will work fine if you make this substitution in the underlying + <http://hackage.haskell.org/package/lens-tutorial-1.0.0/docs/src/Control-Lens-Tutorial.html source> + and follow along as prompted. + + As another illustration of the simplicity of the + fundamental van Laarhoven-O'Connor lens combinators - and their homogeneity with + @Control.Lens@ - note that the gloss + <https://github.com/michaelt/lens-family-simple/blob/master/examples/Pong.hs pong example> + from the @lens@ library examples directory - which continues to be + among the best introductory lens tutorials precisely by saying nothing - + requires only this abbreviating change of imports. + + If you make that program more complicated, + you might of course end up needing + the more sophisticated material in @Control.Lens@ and + its immense mass of dependencies. On the other hand, + you might just need some of the additional material + present in the similarly demystifying + <http://hackage.haskell.org/package/microlens microlens> + or <http://hackage.haskell.org/package/microlens-th microlens-th> and + the associated modules. + + This module was originally intended to simplify the use of packages that + follow the original promise of the van Laarhoven-O'Connor lenses. + /Correct practice is to export lenses without depending on a lens-library, where possible./ + In basic cases these just use familiar @Prelude@ types, after all. + Examples of best practices in this respect are e.g. <http://hackage.haskell.org/package/lens-family-th lens-family-th> which + doesn't depend on @lens-family@ despite its name and pipes-related packages like + <http://hackage.haskell.org/package/pipes-bytestring pipes-bytestring> + and <http://hackage.haskell.org/package/pipes-group pipes-group>. + + @Lens.Simple@ also re-exports @makeLenses@ and + other convenient TH incantations from Dan Burton's associated + <http://hackage.haskell.org/package/lens-family-th lens-family-th>. + + </longdescription> +</pkgmetadata>
