Subject: [bug#42722] [PATCH 2/4] gnu: Add ghc-text-short.

From: Alexandru-Sergiu Marton <[email-masked]>
Date: Wed, 5 Aug 2020 18:57:23 +0300

* gnu/packages/haskell-xyz.scm (ghc-text-short): 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 54c77653cc..4d07eb7ea6 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -12579,6 +12579,47 @@ upgraded.  Consider yourself warned!")
 string metrics efficiently.")
     (license license:bsd-3)))
 
+(define-public ghc-text-short
+  (package
+    (name "ghc-text-short")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/text-short/text-short-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xyrxlb602z8bc9sr2y1fag0x56a20yj5qrkvy7iwc6hnznrynxz"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-hashable" ,ghc-hashable)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-quickcheck-instances"
+        ,ghc-quickcheck-instances)))
+    (arguments
+     `(#:cabal-revision
+       ("2"
+        "17cb7p0qywf2dsrq3g8qb3ssknd9wl5k0nc2pxz9gc3l8rxpkw51")))
+    (home-page
+     "http://hackage.haskell.org/package/text-short")
+    (synopsis
+     "Memory-efficient representation of Unicode text strings")
+    (description
+     "This package provides the @code{ShortText} type which is suitable for
+keeping many short strings in memory.  This is similiar to how
+@code{ShortByteString} relates to @code{ByteString}.  The main difference
+between @code{Text} and @code{ShortText} is that @code{ShortText} uses UTF-8
+instead of UTF-16 internally and also doesn't support zero-copy
+slicing (thereby saving 2 words).  Consequently, the memory footprint of
+a (boxed) @code{ShortText} value is 4 words (2 words when unboxed) plus the
+length of the UTF-8 encoded payload.")
+    (license license:bsd-3)))
+
 (define-public ghc-tf-random
   (package
     (name "ghc-tf-random")
-- 
2.28.0