gnu: Add go-github-com-michiwend-golang-pretty.

* gnu/packages/golang.scm (go-github-com-michiwend-golang-pretty): New variable.

gnu/packages/golang.scm

@@ -2266,3 +2266,37 @@ be performed.")
       (description "Package @code{text} provides manipulation Go functions for
 paragraphs of text.")
       (license license:expat))))
+
+(define-public go-github-com-michiwend-golang-pretty
+  (let ((commit "8ac61812ea3fa540f3f141a444fcb0dd713cdca4")
+        (revision "0"))
+    (package
+      (name "go-github-com-michiwend-golang-pretty")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url
+                "https://github.com/michiwend/golang-pretty")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "0rjfms0csjqi91xnddzx3rcrcaikc7xc027617px3kdwdap80ir4"))))
+      (build-system go-build-system)
+      (native-inputs
+       `(("go-github-com-kr-text" ,go-github-com-kr-text)))
+      (arguments
+       `(#:tests? #f                    ; Upstream tests seem to be broken.
+         #:import-path "github.com/michiwend/golang-pretty"))
+      (home-page "https://github.com/michiwend/golang-pretty")
+      (synopsis "Pretty printing for Go values")
+      (description "Package @code{pretty} provides pretty-printing for Go
+values.  This is useful during debugging, to avoid wrapping long output lines
+in the terminal.
+
+It provides a function, @code{Formatter}, that can be used with any function
+that accepts a format string.  It also provides convenience wrappers for
+functions in packages @code{fmt} and @code{log}.")
+      (license license:expat))))