samplet pushed a commit to branch wip-haskell-updates
in repository guix.

commit 11d9802f67e01358d11a898245908442dfa8d014
Author: Timothy Sample <samp...@ngyro.com>
Date:   Fri Nov 1 23:55:03 2019 -0400

    gnu: Add ghc-sop-core.
    
    * gnu/packages/haskell-xyz.scm (ghc-sop-core): New variable.
---
 gnu/packages/haskell-xyz.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 44edf2b..57c1ce7 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -9368,6 +9368,29 @@ automatically by SmallCheck.")
      "This library provides a SOCKS proxy (version 5) implementation.")
     (license license:bsd-3)))
 
+(define-public ghc-sop-core
+  (package
+    (name "ghc-sop-core")
+    (version "0.4.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/";
+                           "sop-core/sop-core-" version ".tar.gz"))
+       (sha256
+        (base32
+         "07ci2mh8cbjvipb576rxsj3iyhkj5c5dnsns4xkdppp2p3pv10d3"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/sop-core";)
+    (synopsis "True Sums of Products")
+    (description "This package provides an implementation of
+@math{n}-ary sums and @math{n}-ary products.  The module @code{Data.SOP}
+is the main module of this library and contains more detailed
+documentation.  The main use case of this package is to serve as the
+core of @url{https://hackage.haskell.org/package/generics-sop,
+generics-sop}.")
+    (license license:bsd-3)))
+
 (define-public ghc-split
   (package
     (name "ghc-split")

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