gnu: emacs-helm-system-packages: Add recutils to inputs.

* gnu/packages/emacs.scm (emacs-helm-system-packages)[inputs]: Use recutils.

gnu/packages/emacs.scm

@@ -5929,8 +5929,20 @@ Yasnippet.")
                (base32
                 "01by0c4lqi2cw8xmbxkjw7m9x78zssm31sx4hdpw5j35s2951j0f"))))
     (build-system emacs-build-system)
+    (inputs
+     `(("recutils" ,recutils)))
     (propagated-inputs
      `(("emacs-helm" ,emacs-helm)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((recutils (assoc-ref inputs "recutils")))
+               ;; Specify the absolute file names of the various
+               ;; programs so that everything works out-of-the-box.
+               (substitute* "helm-system-packages-guix.el"
+                 (("recsel") (string-append recutils "/bin/recsel")))))))))
     (home-page "https://github.com/emacs-helm/helm-system-packages")
     (synopsis "Helm System Packages is an interface to your package manager")
     (description "List all available packages in Helm (with installed