gnu: kakoune: Update to 2018.04.13.

* gnu/packages/text-editors.scm (kakoune): Update to 2018.04.13.
Remove LET binding for the git revision and re-indent accordingly.
[version, source]: Replace the git checkout with new release tarball.
[arguments]: Remove ‘fix-test-permissions’ phase.
[native-inputs]: Add PKG-CONFIG.

gnu/packages/text-editors.scm

@@ -100,24 +100,22 @@ based command language.")
                    license:expat))))         ; lexers and libutf.[ch]
 
 (define-public kakoune
-  (let ((commit "125c8b7e80995732e0d8c87b82040025748f1b4f")
-        (revision "1"))
   (package
     (name "kakoune")
-      (version (string-append "0.0.0-" revision "." (string-take commit 7)))
+    (version "2018.04.13")
     (source
      (origin
-         (file-name (string-append "kakoune-" version "-checkout"))
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/mawww/kakoune.git")
-               (commit commit)))
+       (method url-fetch)
+       (uri (string-append "https://github.com/mawww/kakoune/"
+                           "releases/download/v" version "/"
+                           name "-" version ".tar.bz2"))
        (sha256
         (base32
-           "19qs99l8r9p1vi5pxxx9an22fvi7xx40qw3jh2cnh2mbacawvdyb"))))
+         "1kkzs5nrjxzd1jq7a4k7qfb5kg05871z0r3d9c0yhz9shf6wz36d"))))
     (build-system gnu-build-system)
     (arguments
-       `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
+     `(#:make-flags
+       (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'patch-source
@@ -131,18 +129,16 @@ based command language.")
                 (string-append "m_shell = \"" (which "sh")
                                "\";\n        " line)))
              #t))
-           (delete 'configure)
+         (delete 'configure)            ; no configure script
          ;; kakoune requires us to be in the src/ directory to build
          (add-before 'build 'chdir
-             (lambda _ (chdir "src") #t))
-           (add-before 'check 'fix-test-permissions
-             (lambda _
-               ;; Out git downloader doesn't give us write permissions, but
-               ;; without them the tests fail.
-               (zero? (system* "chmod" "-R" "u+w" "../test")))))))
-      (native-inputs `(("asciidoc" ,asciidoc)
+           (lambda _ (chdir "src") #t)))))
+    (native-inputs
+     `(("asciidoc" ,asciidoc)
+       ("pkg-config" ,pkg-config)
        ("ruby" ,ruby)))
-      (inputs `(("ncurses" ,ncurses)
+    (inputs
+     `(("ncurses" ,ncurses)
        ("boost" ,boost)))
     (synopsis "Vim-inspired code editor")
     (description
@@ -152,7 +148,7 @@ editing language\" model.  Kakoune has a strong focus on interactivity, most
 commands provide immediate and incremental results, while still being
 competitive (as in keystroke count) with Vim.")
     (home-page "http://kakoune.org/")
-      (license license:unlicense))))
+    (license license:unlicense)))
 
 (define-public joe
   (package