gnu: Add go-github-com-audriusbutkevicius-cli.

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

gnu/packages/syncthing.scm

@@ -1422,3 +1422,27 @@ limiting in Go.")
 the current goroutine's ID.")
       (home-page "https://github.com/petermattis/goid")
       (license asl2.0))))
+
+(define-public go-github-com-audriusbutkevicius-cli
+  (let ((commit "7f561c78b5a4aad858d9fd550c92b5da6d55efbb")
+        (revision "0"))
+    (package
+      (name "go-github-com-audriusbutkevicius-cli")
+      (version (git-version "0.0.0" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                       (url "https://github.com/AudriusButkevicius/cli.git")
+                       (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0bg26pfg25vr16jmczig2m493mja2nxjxyswz3hha7avxw20rpi5"))))
+      (build-system go-build-system)
+      (arguments
+       '(#:import-path "github.com/AudriusButkevicius/cli"))
+      (synopsis "Library for building command-line interfaces in Go")
+      (description "This package provides a library for building command-line
+interfaces in Go.")
+      (home-page "https://github.com/AudriusButkevicius/cli")
+      (license expat))))