bug#26770: [PATCH] gnu: tailon: Add missing inputs.

[Christopher Baines <mail@cbaines.net>]

* gnu/packages/logging.scm (tailon)[inputs]: Add grep, gawk, sed and coreutils
  as inputs.
  [arguments]: Wrap bin/tailon to include some inputs in the PATH.
---
 gnu/packages/logging.scm | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/logging.scm b/gnu/packages/logging.scm
index 2523d65f6..060521eab 100644
--- a/gnu/packages/logging.scm
+++ b/gnu/packages/logging.scm
@@ -26,6 +26,8 @@
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
   #:use-module (gnu packages)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages gawk)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages python)
   #:use-module (gnu packages autotools))
@@ -108,7 +110,25 @@ command line.")
     (inputs
      `(("python-pyyaml" ,python-pyyaml)
        ("python-sockjs-tornado" ,python-sockjs-tornado)
-       ("python-tornado" ,python-tornado)))
+       ("python-tornado" ,python-tornado)
+       ("grep" ,grep)
+       ("gawk" ,gawk)
+       ("sed" ,sed)
+       ("tail" ,coreutils)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'wrap-tailon-path
+                    (lambda* (#:key inputs outputs #:allow-other-keys)
+                      (let ((out (assoc-ref outputs "out")))
+                        (wrap-program (string-append out "/bin/tailon")
+                          `("PATH" ":" prefix ,(map
+                                                (lambda (input)
+                                                  (string-append
+                                                   (assoc-ref inputs input)
+                                                   "/bin"))
+                                                '("grep" "gawk" "sed" "tail"))))
+                        #t))))))
     (home-page "https://tailon.readthedocs.io/")
     (synopsis
      "Webapp for looking at and searching through log files")
-- 
2.12.0