gnu: Add Add emacs-wgrep-helm.

* gnu/packages/emacs.scm (emacs-wgrep-helm): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/emacs.scm

@@ -11201,3 +11201,30 @@ e.g. the package dependencies it requires.  See function
 \"Package-Requires:\" or \"Package-Version:\" header is present in the
 file.")
       (license license:gpl3+))))
+
+(define-public emacs-wgrep-helm
+  (let ((commit "1cdd7c136f1e7565bb13d2df69be3dc77b83698d"))
+    (package
+      (name "emacs-wgrep-helm")
+      (version (git-version "2.1.10" "1" commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/mhayashi1120/Emacs-wgrep")
+               (commit commit)))
+         (file-name (string-append name "-" version "-checkout"))
+         (sha256
+          (base32
+           "057p99hq0r6z1k8sl15w3sxrqvlv0g9wp39zy1pqhccv2mn3g2d6"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-wgrep" ,emacs-wgrep)))
+      (home-page
+       "https://github.com/mhayashi1120/Emacs-wgrep")
+      (synopsis
+       "Writable helm-grep-mode buffer and apply the changes to files")
+      (description
+       "@code{wgrep-helm} allows you to edit a @code{helm-grep-mode} buffer and
+apply those changes to the file buffer.")
+      (license license:gpl3+))))