01/01: gnu: font-google-material-design-icons: Use 'font-build-system'.

[???]

iyzsong pushed a commit to branch master
in repository guix.

commit 99e9d598e3f33924d777054baf21ee3e45ff47b4
Author: Arun Isaac <address@hidden>
Date:   Sat Jun 24 23:09:00 2017 +0800

    gnu: font-google-material-design-icons: Use 'font-build-system'.
    
    * gnu/packages/fonts.scm (font-google-material-design-icons): Re-indent.
    Switch to font-build-system.
    
    Signed-off-by: 宋文武 <address@hidden>
---
 gnu/packages/fonts.scm | 55 +++++++++++++++-----------------------------------
 1 file changed, 16 insertions(+), 39 deletions(-)

diff --git a/gnu/packages/fonts.scm b/gnu/packages/fonts.scm
index 2ee012e..297094c 100644
--- a/gnu/packages/fonts.scm
+++ b/gnu/packages/fonts.scm
@@ -1044,51 +1044,28 @@ monospace, slab-serif fonts.")
 
 (define-public font-google-material-design-icons
   (package
-   (name "font-google-material-design-icons")
-   (version "3.0.1")
-   (source (origin
-            (method url-fetch)
-            (uri (string-append
-                   "https://github.com/google/material-design-icons/archive/";
+    (name "font-google-material-design-icons")
+    (version "3.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://github.com/google/material-design-icons/archive/";
                     version ".tar.gz"))
-            (sha256
-             (base32
-              "183n0qv3q8w6n27libarq1fhc4mqv2d3sasbfmbn7x9r5pw9c6ga"))
-            (file-name (string-append name "-" version ".tar.gz"))))
-   (build-system trivial-build-system)
-   (native-inputs
-    `(("tar" ,tar)
-      ("gzip" ,gzip)))
-   (arguments
-    `(#:modules ((guix build utils))
-      #:builder (begin
-                  (use-modules (guix build utils))
-                  (let* ((font-dir (string-append %output
-                                                  "/share/fonts/truetype"))
-                         (source (assoc-ref %build-inputs "source"))
-                         (font-filename "MaterialIcons-Regular.ttf")
-                         (src-ttf-file (string-append "material-design-icons-"
-                                                      ,version
-                                                      "/iconfont/"
-                                                      font-filename))
-                         (dest-ttf-file (string-append font-dir font-filename))
-                         (gzip (assoc-ref %build-inputs "gzip"))
-                         (tar (assoc-ref %build-inputs "tar")))
-                    (setenv "PATH" (string-append gzip "/bin:"
-                                                  tar "/bin:"))
-                    (system* "tar" "xf" source)
-                    (mkdir-p font-dir)
-                    (copy-file src-ttf-file dest-ttf-file)))))
-   (home-page "http://google.github.io/material-design-icons";)
-   (synopsis "Icon font of Google Material Design icons")
-   (description
-    "Material design system icons are simple, modern, friendly, and sometimes
+              (sha256
+               (base32
+                "183n0qv3q8w6n27libarq1fhc4mqv2d3sasbfmbn7x9r5pw9c6ga"))
+              (file-name (string-append name "-" version ".tar.gz"))))
+    (build-system font-build-system)
+    (home-page "http://google.github.io/material-design-icons";)
+    (synopsis "Icon font of Google Material Design icons")
+    (description
+     "Material design system icons are simple, modern, friendly, and sometimes
 quirky.  Each icon is created using our design guidelines to depict in simple
 and minimal forms the universal concepts used commonly throughout a UI.
 Ensuring readability and clarity at both large and small sizes, these icons
 have been optimized for beautiful display on all common platforms and display
 resolutions.")
-   (license license:asl2.0)))
+    (license license:asl2.0)))
 
 (define-public font-mathjax
   (package