gnu: Add font-vazir.

* gnu/packages/fonts.scm (font-vazir): New variable.

gnu/packages/fonts.scm

@@ -29,6 +29,7 @@
 ;;; Copyright © 2019 Alva <alva@skogen.is>
 ;;; Copyright © 2019 Alexandros Theodotou <alex@zrythm.org>
 ;;; Copyright © 2020 Damien Cassou <damien@cassou.me>
+;;; Copyright © 2020 Amin Bandali <mab@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1585,3 +1586,42 @@ This package provides the TrueType fonts.")
 Mono’s typeface forms are simple and free from unnecessary details.  Rendered
 in small sizes, the text looks crisper.")
     (license license:asl2.0)))
+
+(define-public font-vazir
+  (package
+    (name "font-vazir")
+    (version "22.1.0")
+    (source
+     (origin
+       (method url-fetch/zipbomb)
+       (uri
+        (string-append "https://github.com/rastikerdar/vazir-font/"
+                       "releases/download/v" version
+                       "/vazir-font-v" version ".zip"))
+       (sha256
+        (base32
+         "0w3gwb5q33x5llw7cfs8qhaxr4ssg6rsx4b9day3993zn24xq031"))))
+    (build-system font-build-system)
+    (home-page "https://rastikerdar.github.io/vazir-font/")
+    (synopsis "Vazir Persian typeface")
+    (description
+     "Vazir is a beautiful and elegant Persian typeface originally based on
+DejaVu, and comes in six variants: Thin, Light, Normal, Medium, Bold, and
+Black.  This package provides four versions of Vazir:
+
+@itemize
+@item @code{Vazir}: The main version; includes Latin glyphs from Roboto.
+@item @code{Vazir-FD}: Like @code{Vazir}, but (always) uses Farsi digit glyphs
+instead of Latin ones.
+@item @code{Vazir-WOL}: Like @code{Vazir}, but without Roboto's Latin glyphs.
+@item @code{Vazir-FD-WOL}: Combination of @code{Vazir-FD} and @code{Vazir-WOL}:
+always uses Farsi digits, and does not include Latin glyphs from Roboto.
+@end itemize\n")
+    (license
+     ;; See https://github.com/rastikerdar/vazir-font/blob/master/LICENSE for
+     ;; details.
+     (list license:public-domain        ; the Vazir modifications to DejaVu
+                                        ; and the DejaVu modifications to...
+           (license:x11-style           ; ...the Bitstream Vera typeface
+            "file://LICENSE" "Bitstream Vera License")
+           license:asl2.0))))           ; Latin glyphs from Roboto