gnu: i3blocks: Update to 1.5.

* gnu/packages/wm.scm (i3blocks): Update to 1.5.
[source]: Use git tag.
[arguments]: Remove entirely.

gnu/packages/wm.scm

@@ -271,31 +271,19 @@ Despite the name it should work with any X11 window manager.")
     (license license:bsd-3)))
 
 (define-public i3blocks
-  (let ((commit "ec050e79ad8489a6f8deb37d4c20ab10729c25c3")
-        (revision "2"))
   (package
     (name "i3blocks")
-      (version (string-append "1.4-" revision "."
-                              (string-take commit 7)))
+    (version "1.5")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://github.com/vivien/i3blocks.git")
-                      (commit commit)))
+                    (commit version)))
               (sha256
                (base32
-                  "1fx4230lmqa5rpzph68dwnpcjfaaqv5gfkradcr85hd1z8d1qp1b"))
+                "0v8mwnm8qzpv6xnqvrk43s4b9iyld4naqzbaxk4ldq1qkhai0wsv"))
               (file-name (git-file-name name version))))
     (build-system gnu-build-system)
-      (arguments
-       `(#:make-flags (list "CC=gcc" (string-append "PREFIX=" %output))
-         #:phases (modify-phases %standard-phases
-                    (add-after 'install 'install-doc
-                      (lambda* (#:key outputs #:allow-other-keys)
-                        (let* ((out (assoc-ref outputs "out"))
-                               (man1 (string-append out "/share/man/man1")))
-                          (install-file "docs/i3blocks.1" man1)
-                          #t))))))
     (native-inputs
      `(("autoconf" ,autoconf)
        ("automake" ,automake)
@@ -306,7 +294,7 @@ Despite the name it should work with any X11 window manager.")
 status line from their output.  The generated line is meant to be displayed by
 the i3 window manager through its i3bar component, as an alternative to
 i3status.")
-      (license license:gpl3+))))
+    (license license:gpl3+)))
 
 (define-public perl-anyevent-i3
   (package