322/328: gnu: Add ghc-diagrams-solve.

[guix-commits]

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

commit ee087d17dfa26a6d1e839b152ba3286f5a641131
Author: Timothy Sample <address@hidden>
Date:   Wed Nov 13 01:41:05 2019 -0500

    gnu: Add ghc-diagrams-solve.
    
    * gnu/packages/haskell-xyz.scm (ghc-diagrams-solve): New variable.
---
 gnu/packages/haskell-xyz.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 5a9266c..86b7d23 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -2864,6 +2864,37 @@ diagrams, an embedded domain-specific language for 
compositional,
 declarative drawing.")
     (license license:bsd-3)))
 
+(define-public ghc-diagrams-solve
+  (package
+    (name "ghc-diagrams-solve")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/";
+                           "diagrams-solve/diagrams-solve-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "17agchqkmj14b17sw50kzxq4hm056g5d8yy0wnqn5w8h1d0my7x4"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (arguments
+     `(#:cabal-revision
+       ("5" "1yl8cs05fzqcz49p601am1ij66m9pa70yamhfxgcvya2pf8nimlf")))
+    (home-page "https://archives.haskell.org/projects.haskell.org/diagrams/";)
+    (synopsis "Pure Haskell solver routines used by diagrams")
+    (description "This library provides Pure Haskell solver routines for
+use by the
+@url{https://archives.haskell.org/projects.haskell.org/diagrams/,
+diagrams framework}.  It currently includes routines for finding real
+roots of low-degree (@math{n < 5}) polynomials, and solving tridiagonal
+and cyclic tridiagonal linear systems.")
+    (license license:bsd-3)))
+
 (define-public ghc-dictionary-sharing
   (package
     (name "ghc-dictionary-sharing")