@@ 9710,6 9710,72 @@ configurations to coexist without resorting to mutable global variables or
@code{System.IO.Unsafe.unsafePerformIO}.")
(license license:bsd-3)))
+(define-public ghc-reflex
+ (package
+ (name "ghc-reflex")
+ (version "0.8.2.2")
+ (source (origin
+ (method url-fetch)
+ (uri (hackage-uri "reflex" version))
+ (sha256
+ (base32
+ "1add5bcsyq2k02w2q0ifbyfcvcic1hmjdbgxg8ajd5riam0lhb16"))))
+ (build-system haskell-build-system)
+ (properties '((upstream-name . "reflex")))
+ (inputs (list ghc-memotrie
+ ghc-bifunctors
+ ghc-comonad
+ ghc-commutative-semigroups
+ ghc-constraints
+ ghc-constraints-extras
+ ghc-data-default
+ ghc-dependent-map
+ ghc-exception-transformers
+ ghc-lens
+ ghc-mmorph
+ ghc-monad-control
+ ghc-patch
+ ghc-prim-uniq
+ ghc-primitive
+ ghc-profunctors
+ ghc-random
+ ghc-ref-tf
+ ghc-reflection
+ ghc-semigroupoids
+ ghc-syb
+ ghc-unbounded-delays
+ ghc-witherable
+ ghc-these
+ ghc-semialign
+ ghc-monoidal-containers
+ ghc-dependent-sum
+ ghc-haskell-src-exts
+ ghc-haskell-src-meta))
+ (native-inputs (list hlint
+ ghc-split
+ ghc-filemanip
+ ghc-these-lens
+ ghc-hspec
+ ghc-proctest))
+ (arguments
+ '(#:phases
+ (modify-phases %standard-phases
+ (add-before 'configure 'update-constraints
+ (lambda _
+ (substitute* "reflex.cabal"
+ (("\\bmmorph >= 1\\.0 && < 1\\.2,") "mmorph,")))))))
+ (home-page "https://reflex-frp.org")
+ (synopsis "Higher-order functional reactive programming")
+ (description
+ "This library lets you write interactive programs without callbacks or
+side-effects. Functional Reactive Programming (FRP) uses composable events
+and time-varying values to describe interactive systems as pure functions.
+Just like other pure functional code, functional reactive code is easier to
+get right on the first try, maintain, and reuse. Reflex is a
+fully-deterministic, higher-order FRP interface and an engine that efficiently
+implements that interface.")
+ (license license:bsd-3)))
+
(define-public ghc-regex
(package
(name "ghc-regex")