#!/bin/sh
export PATH='/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl'
echo 'name: lens
version: 4.17.1
id: lens-4.17.1-4Jk5GSd1SEYIuq2Vm9OfL2
key: lens-4.17.1-4Jk5GSd1SEYIuq2Vm9OfL2
license: BSD-2-Clause
copyright: Copyright (C) 2012-2016 Edward A. Kmett
maintainer: Edward A. Kmett <ekmett@gmail.com>
author: Edward A. Kmett
stability: provisional
homepage: http://github.com/ekmett/lens/
synopsis: Lenses, Folds and Traversals
description:
    This package comes \"Batteries Included\" with many useful lenses for the types
    commonly used from the Haskell Platform, and with tools for automatically
    generating lenses and isomorphisms for user-supplied data types.
    .
    The combinators in @Control.Lens@ provide a highly generic toolbox for composing
    families of getters, folds, isomorphisms, traversals, setters and lenses and their
    indexed variants.
    .
    An overview, with a large number of examples can be found in the <https://github.com/ekmett/lens#lens-lenses-folds-and-traversals README>.
    .
    An introductory video on the style of code used in this library by Simon Peyton Jones is available from <http://skillsmatter.com/podcast/scala/lenses-compositional-data-access-and-manipulation Skills Matter>.
    .
    A video on how to use lenses and how they are constructed is available on <http://youtu.be/cefnmjtAolY?hd=1 youtube>.
    .
    Slides for that second talk can be obtained from <http://comonad.com/haskell/Lenses-Folds-and-Traversals-NYC.pdf comonad.com>.
    .
    More information on the care and feeding of lenses, including a brief tutorial and motivation
    for their types can be found on the <https://github.com/ekmett/lens/wiki lens wiki>.
    .
    A small game of @pong@ and other more complex examples that manage their state using lenses can be found in the <https://github.com/ekmett/lens/blob/master/examples/ example folder>.
    .
    /Lenses, Folds and Traversals/
    .
    With some signatures simplified, the core of the hierarchy of lens-like constructions looks like:
    .
    .
    <<http://i.imgur.com/ALlbPRa.png>>
    .
    <Hierarchy.png (Local Copy)>
    .
    You can compose any two elements of the hierarchy above using @(.)@ from the @Prelude@, and you can
    use any element of the hierarchy as any type it linked to above it.
    .
    The result is their lowest upper bound in the hierarchy (or an error if that bound doesn'\''t exist).
    .
    For instance:
    .
    * You can use any '\''Traversal'\'' as a '\''Fold'\'' or as a '\''Setter'\''.
    .
    * The composition of a '\''Traversal'\'' and a '\''Getter'\'' yields a '\''Fold'\''.
    .
    /Minimizing Dependencies/
    .
    If you want to provide lenses and traversals for your own types in your own libraries, then you
    can do so without incurring a dependency on this (or any other) lens package at all.
    .
    /e.g./ for a data type:
    .
    > data Foo a = Foo Int Int a
    .
    You can define lenses such as
    .
    > -- bar :: Lens'\'' (Foo a) Int
    > bar :: Functor f => (Int -> f Int) -> Foo a -> f (Foo a)
    > bar f (Foo a b c) = fmap (\a'\'' -> Foo a'\'' b c) (f a)
    .
    > -- quux :: Lens (Foo a) (Foo b) a b
    > quux :: Functor f => (a -> f b) -> Foo a -> f (Foo b)
    > quux f (Foo a b c) = fmap (Foo a b) (f c)
    .
    without the need to use any type that isn'\''t already defined in the @Prelude@.
    .
    And you can define a traversal of multiple fields with '\''Control.Applicative.Applicative'\'':
    .
    > -- traverseBarAndBaz :: Traversal'\'' (Foo a) Int
    > traverseBarAndBaz :: Applicative f => (Int -> f Int) -> Foo a -> f (Foo a)
    > traverseBarAndBaz f (Foo a b c) = Foo <$> f a <*> f b <*> pure c
    .
    What is provided in this library is a number of stock lenses and traversals for
    common haskell types, a wide array of combinators for working them, and more
    exotic functionality, (/e.g./ getters, setters, indexed folds, isomorphisms).
category: Data, Lenses, Generics
abi: 68cb674c13e3d6ce609fefc26ad9569c
exposed: True
exposed-modules:
    Control.Exception.Lens Control.Lens Control.Lens.At
    Control.Lens.Combinators Control.Lens.Cons Control.Lens.Each
    Control.Lens.Empty Control.Lens.Equality Control.Lens.Extras
    Control.Lens.Fold Control.Lens.Getter Control.Lens.Indexed
    Control.Lens.Internal Control.Lens.Internal.Bazaar
    Control.Lens.Internal.ByteString Control.Lens.Internal.CTypes
    Control.Lens.Internal.Coerce Control.Lens.Internal.Context
    Control.Lens.Internal.Deque Control.Lens.Internal.Exception
    Control.Lens.Internal.FieldTH Control.Lens.Internal.Fold
    Control.Lens.Internal.Getter Control.Lens.Internal.Indexed
    Control.Lens.Internal.Instances Control.Lens.Internal.Iso
    Control.Lens.Internal.Level Control.Lens.Internal.List
    Control.Lens.Internal.Magma Control.Lens.Internal.Prism
    Control.Lens.Internal.PrismTH Control.Lens.Internal.Review
    Control.Lens.Internal.Setter Control.Lens.Internal.TH
    Control.Lens.Internal.Zoom Control.Lens.Iso Control.Lens.Lens
    Control.Lens.Level Control.Lens.Operators Control.Lens.Plated
    Control.Lens.Prism Control.Lens.Reified Control.Lens.Review
    Control.Lens.Setter Control.Lens.TH Control.Lens.Traversal
    Control.Lens.Tuple Control.Lens.Type Control.Lens.Unsound
    Control.Lens.Wrapped Control.Lens.Zoom Control.Monad.Error.Lens
    Control.Parallel.Strategies.Lens Control.Seq.Lens Data.Array.Lens
    Data.Bits.Lens Data.ByteString.Lazy.Lens Data.ByteString.Lens
    Data.ByteString.Strict.Lens Data.Complex.Lens Data.Data.Lens
    Data.Dynamic.Lens Data.HashSet.Lens Data.IntSet.Lens Data.List.Lens
    Data.Map.Lens Data.Sequence.Lens Data.Set.Lens Data.Text.Lazy.Lens
    Data.Text.Lens Data.Text.Strict.Lens Data.Tree.Lens
    Data.Typeable.Lens Data.Vector.Generic.Lens Data.Vector.Lens
    GHC.Generics.Lens Language.Haskell.TH.Lens Numeric.Lens
    Numeric.Natural.Lens System.Exit.Lens System.FilePath.Lens
    System.IO.Error.Lens
hidden-modules: Paths_lens
import-dirs: /usr/lib/ghc-8.6.5/site-local/lens-4.17.1
library-dirs: /usr/lib/ghc-8.6.5/site-local/lens-4.17.1
dynamic-library-dirs: /usr/lib
data-dir: /usr/share/x86_64-linux-ghc-8.6.5/lens-4.17.1
hs-libraries: HSlens-4.17.1-4Jk5GSd1SEYIuq2Vm9OfL2
depends:
    array-0.5.3.0 base-4.12.0.0
    base-orphans-0.8.1-1eiH9qVb6AAEHB9dzgavFy
    bifunctors-5.5.4-F7d4B9ltNTgBiYmBPi0jgL bytestring-0.10.8.2
    call-stack-0.1.0-J1eWgTNOnM4IGVyeW0v2YZ
    comonad-5.0.5-Jl6mV4tCv8DH0upvqmXcGR containers-0.6.0.1
    contravariant-1.5.2-IGTyLqhZC2pCTY0qng5HHQ
    distributive-0.6-GG50drgnUvrA8VTISpGDag
    exceptions-0.10.2-D9MYzhqXvqCL8hMQL1PEiN filepath-1.4.2.1
    free-5.1.1-2UBOpcP6tw37MFPUg5YXNd ghc-prim-0.5.3
    hashable-1.2.7.0-KHvCgUH7dIl7mI8fl4akIo
    kan-extensions-5.2-BPaNhyL7X0RL9PZuTLAAqy mtl-2.2.2
    parallel-3.2.2.0-EGl5SOk48TWHAD161C93aQ
    profunctors-5.4-LjWaJA8kJzmIr0eJAafd3B
    reflection-2.1.4-D3IaixAKGmk6dzEKDGsgtn
    semigroupoids-5.3.2-1VJu8li9guCCY6EpRRYm1V
    tagged-0.8.6-AoE7RQX12AwJxLvAxGYxtP template-haskell-2.14.0.0
    text-1.2.3.1 th-abstraction-0.2.11.0-DAhuCgi08HTBWsDjm9nrOq
    transformers-0.5.6.2
    transformers-compat-0.6.5-6PKzEe5EVLXd5Neg4mr6X
    unordered-containers-0.2.10.0-2N7l4ZvxBr3HGayD0s0P1Q
    vector-0.12.0.3-2LEYu9M2i7lERDtz76XG3n
haddock-interfaces: /usr/share/doc/haskell-lens/html/lens.haddock
haddock-html: /usr/share/doc/haskell-lens/html
' | '/usr/bin/ghc-pkg' 'update' '--force' '-' '--global' '--no-user-package-db' "$@"

