gnu: Add go-github-com-klauspost-reedsolomon.

* gnu/packages/syncthing.scm (go-github-com-klauspost-reedsolomon): New
variable.

gnu/packages/syncthing.scm

@@ -1917,3 +1917,30 @@ notification library in Go.")
     (description "This package provides @code{cpuid}, a Go library that provides information about the CPU running the current program")
     (home-page "https://github.com/klauspost/cpuid")
     (license expat))))
+
+(define-public go-github-com-klauspost-reedsolomon
+  (let ((commit "0b30fa71cc8e4e9010c9aba6d0320e2e5b163b29")
+        (revision "0"))
+  (package
+    (name "go-github-com-klauspost-reedsolomon")
+    (version (git-version "1.6" revision commit))
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/klauspost/reedsolomon.git")
+                     (commit commit)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "04jvf65ybsa7w4d7s2n0s174p0q2fl0dqd5hhn2krw66z9i3rc6d"))))
+    (build-system go-build-system)
+    (arguments
+     '(#:import-path "github.com/klauspost/reedsolomon"))
+    (propagated-inputs
+     `(("go-github-com-klauspost-cpuid"
+        ,go-github-com-klauspost-cpuid)))
+    (synopsis "Reed-Solomon Erasure Coding in Go")
+    (description "This package provides and implemenation of Reed-Solomon
+Erasure Coding in Go.")
+    (home-page "https://github.com/klauspost/reedsolomon")
+    (license expat))))