bug#27172: [PATCH 2/2] gnu: font-iosevka: Use 'font-build-system'.

[Alex Griffin <a@ajgrf.com>]

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This patch switches font-iosevka to the new font-build-system.
-- 
Alex Griffin

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From 05dbe19955883c914f9ec199ca4a26c31eff1074 Mon Sep 17 00:00:00 2001
From: Alex Griffin <a@ajgrf.com>
Date: Wed, 31 May 2017 12:22:35 -0500
Subject: [PATCH 2/2] gnu: font-iosevka: Use 'font-build-system'.

* gnu/packages/fonts.scm (font-iosevka): Switch to font-build-system.
[source]: Use url-fetch/zipbomb.
[native-inputs]: Remove dependency on unzip.
---
 gnu/packages/fonts.scm | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/gnu/packages/fonts.scm b/gnu/packages/fonts.scm
index 76677453d..ef734dfb7 100644
--- a/gnu/packages/fonts.scm
+++ b/gnu/packages/fonts.scm
@@ -1213,26 +1213,14 @@ typeface, by mimicking Comic Sans while fixing its most obvious shortcomings.")
     (name "font-iosevka")
     (version "1.12.5")
     (source (origin
-              (method url-fetch)
+              (method url-fetch/zipbomb)
               (uri (string-append
                     "https://github.com/be5invis/Iosevka/releases/download/v"
                     version "/iosevka-pack-" version ".zip"))
               (sha256
                (base32
                 "0s3g6mk0ngwsrw9h9dqinb50cd9i8zhqdcmmh93fhyf4d87yfwyi"))))
-    (build-system trivial-build-system)
-    (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"))
-                         (unzip  (string-append (assoc-ref %build-inputs "unzip")
-                                                "/bin/unzip")))
-                     (mkdir-p font-dir)
-                     (system* unzip "-d" font-dir source)))))
-    (native-inputs `(("unzip" ,unzip)))
+    (build-system font-build-system)
     (home-page "https://be5invis.github.io/Iosevka/")
     (synopsis "Coders' typeface, built from code")
     (description
-- 
2.13.0