gnu: Add go-github-com-shabbyrobe-gocovmerge.

* gnu/packages/golang-web.scm (go-github-com-shabbyrobe-gocovmerge): New
variable.

Change-Id: Ieb9a4d952e64433a997d03ec147e5411d25fc34b
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>

gnu/packages/golang-check.scm

@@ -26,6 +26,7 @@
 ;;; Copyright © 2024 Troy Figiel <troy@troyfigiel.com>
 ;;; Copyright © 2024 Roman Scherer <roman@burningswell.com>
 ;;; Copyright © 2025 Maxim Cournoyer <maxim@guixotic.coop>
+;;; Copyright © 2025 Patrick Norton <patrick.147.norton@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -2424,6 +2425,32 @@ GIT_TRACE mechanism.")
      "This package provides tools for detecting deadlocks at run-time in Go.")
     (license license:asl2.0)))
 
+(define-public go-github-com-shabbyrobe-gocovmerge
+  (package
+    (name "go-github-com-shabbyrobe-gocovmerge")
+    (version "0.0.0-20230507112040-c3350d9342df")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/shabbyrobe/gocovmerge")
+              (commit (go-version->git-ref version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1853x61fcc0gnqgizggqhh4w9d3i6dcdw72z3gzncr6fhb03y4mz"))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/shabbyrobe/gocovmerge"))
+    (propagated-inputs
+     (list go-golang-org-x-tools))
+    (home-page "https://github.com/shabbyrobe/gocovmerge")
+    (synopsis "Merge coverprofile results from multiple test coverage runs")
+    (description
+     "This package takes the results from multiple
+@code{go test -coverprofile} runs and merges them into one profile.")
+    (license license:bsd-2)))
+
 (define-public go-github-com-smarty-assertions
   (package
     (name "go-github-com-smarty-assertions")