>From f2f36110e94cd860bf4c6f32080dcf5bdd51c3d0 Mon Sep 17 00:00:00 2001
From: John Soo <address@hidden>
Date: Fri, 10 Apr 2020 21:08:27 -0700
Subject: [PATCH 05/25] gnu: Add ghc-dotgen.

* gnu/packages/haskell-xyz.scm (ghc-dotgen): New variable.
---
 gnu/packages/haskell-xyz.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 6dbbdc4c2a..19933f7419 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -3314,6 +3314,30 @@ It is modeled after doctest for Python, see
 @uref{https://docs.python.org/library/doctest.html, the Doctest website}.")
     (license license:expat)))
 
+(define-public ghc-dotgen
+  (package
+    (name "ghc-dotgen")
+    (version "0.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/dotgen/dotgen-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "148q93qsmqgr5pzdwvpjqfd6bdm1pwzcp2rblfwswx2x8c5f43fg"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/ku-fpg/dotgen")
+    (synopsis
+     "Simple interface for building .dot graph files")
+    (description
+     "This package provides a simple interface for building .dot graph
+files, for input into the dot and graphviz tools.  It includes a
+monadic interface for building graphs.")
+    (license license:bsd-3)))
+
 (define-public ghc-double-conversion
   (package
     (name "ghc-double-conversion")
-- 
2.26.0