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[bug#44174] [PATCH 11/16] gnu: Add ghc-wizards.

From: Carlo Holl
Subject: [bug#44174] [PATCH 11/16] gnu: Add ghc-wizards.
Date: Fri, 23 Oct 2020 10:05:39 -0700

 gnu/packages/haskell-xyz.scm | 50 ++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 269ba898b3..bfbe601ed7 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -14780,6 +14780,56 @@ widths to the Char type.")
 Haskell value or function.")
     (license license:bsd-3)))
+(define-public ghc-wizards
+  (package
+    (name "ghc-wizards")
+    (version "1.0.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append
+               "";
+               version
+               ".tar.gz"))
+        (sha256
+          (base32
+            "1clvbd1ckhvy29qrbmpkn7bya7300fq6znnps23nn3nxyrxhsr85"))))
+    (build-system haskell-build-system)
+    (inputs
+      `(("ghc-control-monad-free"
+         ,ghc-control-monad-free)))
+    (arguments
+      `(#:cabal-revision
+        ("1"
+         "095qd17zrdhqmcvmslbyzfa5sh9glvvsnsvnlz31gzsmi8nnsgim")))
+    (home-page
+      "";)
+    (synopsis
+      "High level, generic library for interrogative user interfaces")
+    (description "@code{wizards} is a package designed for the quick
+and painless development of @emph{interrogative} programs, which revolve around
+a \"dialogue\" with the user, who is asked a series of questions in a
+sequence much like an installation wizard.
+Everything from interactive system scripts, to installation wizards, to 
+shells can be implemented with the support of @code{wizards}.
+It is developed transparently on top of a free monad, which separates out the
+semantics of the program from any particular interface.  A variety of backends
+exist, including console-based @code{System.Console.Wizard.Haskeline} and
+@code{System.Console.Wizard.BasicIO}, and the pure 
+It is also possible to write your own backends, or extend existing back-ends 
+new features.  While both built-in IO backends operate on a console, there is 
+reason why @code{wizards} cannot also be used for making GUI wizard interfaces.
+See the github page for examples on usage:
+For creating backends, the module @code{System.Console.Wizard.Internal} has a 
+    (license license:bsd-3)))
 (define-public ghc-wl-pprint
     (name "ghc-wl-pprint")

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