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[bug#39029] [PATCH] gnu: Add ghc-basic-prelude.

From: Alexandru-Sergiu Marton
Subject: [bug#39029] [PATCH] gnu: Add ghc-basic-prelude.
Date: Wed, 8 Jan 2020 11:33:35 +0200

* gnu/packages/haskell-xyz.scm (ghc-basic-prelude): New variable.
 gnu/packages/haskell-xyz.scm | 41 ++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 3a9880f58c..b2279f6cdd 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -903,6 +903,47 @@ stand for certain ASCII character sequences, i.e. → 
instead of @code{->},
 ∀ instead of @code{forall} and many others.")
     (license license:bsd-3)))
+(define-public ghc-basic-prelude
+  (package
+  (name "ghc-basic-prelude")
+  (version "0.7.0")
+  (source
+    (origin
+      (method url-fetch)
+      (uri (string-append
+            "";
+            "basic-prelude-" version ".tar.gz"))
+      (sha256
+        (base32
+          "0yckmnvm6i4vw0mykj4fzl4ldsf67v8d2h0vp1bakyj84n4myx8h"))))
+  (build-system haskell-build-system)
+  (inputs
+    `(("ghc-hashable" ,ghc-hashable)
+      ("ghc-unordered-containers"
+       ,ghc-unordered-containers)
+      ("ghc-vector" ,ghc-vector)))
+  (home-page
+    "";)
+  (synopsis
+    "Enhanced core prelude; a common foundation for alternate preludes")
+  (description
+    "The premise of basic-prelude is that there are a lot of very commonly
+desired features missing from the standard Prelude, such as commonly used
+operators (<$> and >=>, for instance) and imports for common datatypes
+(e.g., ByteString and Vector).  At the same time, there are lots of other
+components which are more debatable, such as providing polymorphic versions
+of common functions.
+So basic-prelude is intended to give a common foundation for a number of
+alternate preludes.  The package provides two modules: CorePrelude provides
+the common ground for other preludes to build on top of, while BasicPrelude
+exports CorePrelude together with commonly used list functions to provide a
+drop-in replacement for the standard Prelude.
+Users wishing to have an improved Prelude can use BasicPrelude.  Developers
+wishing to create a new prelude should use CorePrelude.")
+  (license license:expat)))
 (define-public ghc-bifunctors
     (name "ghc-bifunctors")

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