rosenthal: Add go-github-com-gin-contrib-sse.

* rosenthal/packages/golang.scm (go-github-com-gin-contrib-sse): New variable.

rosenthal/packages/golang.scm

@@ -6,7 +6,32 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix build-system go)
   #:use-module (guix git-download)
-  #:use-module (guix packages))
+  #:use-module (guix packages)
+  #:use-module (gnu packages golang))
+
+(define-public go-github-com-gin-contrib-sse
+  (package
+    (name "go-github-com-gin-contrib-sse")
+    (version "0.1.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/gin-contrib/sse")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "072nq91a65n5xvwslqjyvydfd0mfpnvb3vwjyfvmzm1ym96wr1nd"))))
+    (build-system go-build-system)
+    (arguments
+     '(#:import-path "github.com/gin-contrib/sse"))
+    (native-inputs
+     (list go-github-com-stretchr-testify))
+    (home-page "https://github.com/gin-contrib/sse")
+    (synopsis "Server-Sent Events implementation in Go")
+    (description
+     "This package provides a Server-Sent Events implementation in Go.")
+    (license license:expat)))
 
 (define-public go-github-com-google-gopacket
   (package