From bdc877c4d273bbb6ee0d21cdceb3ff36804a076c Mon Sep 17 00:00:00 2001
From: Timothy Sample <samplet@ngyro.com>
Date: Tue, 5 Nov 2019 14:03:31 -0500
Subject: gnu: Add ghc-text-metrics.

* gnu/packages/haskell-xyz.scm (ghc-text-metrics): New variable.
---
 gnu/packages/haskell-xyz.scm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 5ad900a627..46bf1e53c8 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -10435,6 +10435,33 @@ (define-public ghc-text-binary
 text package.")
     (license license:bsd-2)))
 
+(define-public ghc-text-metrics
+  (package
+    (name "ghc-text-metrics")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "text-metrics/text-metrics-" version ".tar.gz"))
+       (sha256
+        (base32
+         "18mzxwkdvjp31r720ai9bnxr638qq8x3a2v408bz0d8f0rsayx1q"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)))
+    (arguments
+     `(#:cabal-revision
+       ("4" "017drxq9x56b345d8w5m8xdsi1zzs0z16pbdx8j35cd1lsnh3kf1")))
+    (home-page "https://github.com/mrkkrp/text-metrics")
+    (synopsis "Calculate various string metrics efficiently")
+    (description "This library provides tools to calculate various
+string metrics efficiently.")
+    (license license:bsd-3)))
+
 (define-public ghc-tf-random
   (package
     (name "ghc-tf-random")
-- 
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