summary refs log tree commit diff
path: root/gnu/packages/fontutils.scm
blob: 136b5bc9927e8be3cdf6831451769b437626230e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2014, 2016 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2016 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages fontutils)
  #:use-module (gnu packages)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages python)
  #:use-module (gnu packages image)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages xml)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix svn-download)
  #:use-module (guix git-download)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu))

(define-public freetype
  (package
   (name "freetype")
   (version "2.7.1")
   (source (origin
            (method url-fetch)
            (uri (string-append "mirror://savannah/freetype/freetype-"
                                version ".tar.bz2"))
            (sha256 (base32
                     "121gm15ayfg3rglby8ifh8384mcjb9dhmx9j40zl7yszw72b4frs"))))
   (build-system gnu-build-system)
   (native-inputs
    `(("pkg-config" ,pkg-config)))
   (propagated-inputs
    ;; These are all in the Requires.private field of freetype2.pc.
    ;; XXX: add harfbuzz.
    `(("libpng" ,libpng)
      ("zlib" ,zlib)))
   (synopsis "Font rendering library")
   (description
    "Freetype is a library that can be used by applications to access the
contents of font files.  It provides a uniform interface to access font files.
It supports both bitmap and scalable formats, including TrueType, OpenType,
Type1, CID, CFF, Windows FON/FNT, X11 PCF, and others.  It supports high-speed
anti-aliased glyph bitmap generation with 256 gray levels.")
   (license license:freetype)           ; some files have other licenses
   (home-page "https://www.freetype.org/")))

(define-public ttfautohint
  (package
    (name "ttfautohint")
    (version "1.5")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://savannah/freetype/ttfautohint-"
                           version ".tar.gz"))
       (sha256
        (base32
         "1lgghck46p33z3hg8dnl76jryig4fh6d8rhzms837zp7x4hyfkv4"))
       (patches (list (search-patch "ttfautohint-source-date-epoch.patch")))))
    (build-system gnu-build-system)
    (native-inputs
     `(("flex" ,flex)
       ("bison" ,bison)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("freetype" ,freetype)
       ("harfbuzz" ,harfbuzz)))
    (arguments
     `(#:configure-flags '("--with-qt=no"))) ;no gui
    (synopsis "Automated font hinting")
    (description
     "ttfautohint provides a 99% automated hinting process and a platform for
finely hand-hinting the last 1%.  It is ideal for web fonts and supports many
scripts.")
    (license (list license:gpl2+ license:freetype)) ;choose one or the other
    (home-page "http://www.freetype.org/ttfautohint/")))

(define-public woff-tools
  (package
    (name "woff-tools")
    (version "2009.10.04")
    (source
     (origin
       (method url-fetch)
       ;; Upstream source is unversioned, so use Debian's versioned tarball
       (uri (string-append "mirror://debian/pool/main/w/woff-tools/"
                           "woff-tools_" version ".orig.tar.gz"))
       (file-name (string-append name "-" version ".tar.gz"))
       (sha256
        (base32
         "1i97gkqa6jfzlslsngqf556kx60knlgf7yc9pzsq2pizc6f0d4zl"))))
    (build-system gnu-build-system)
    (inputs
     `(("zlib" ,zlib)))
    (arguments
     `(#:make-flags '("CC=gcc")
       #:tests? #f                      ;no tests
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)            ;no configuration
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin")))
               (install-file "sfnt2woff" bin)
               (install-file "woff2sfnt" bin)))))))
    (synopsis "Convert between OpenType and WOFF fonts")
    (description
     "This package provides two tools:
@table @code
@item sfnt2woff
Converts OpenType fonts to WOFF fonts
@item woff2sfnt
Converts WOFF fonts to OpenType fonts
@end table")
    (license (list license:mpl1.1 license:gpl2+ license:lgpl2.1+))
    (home-page "https://people.mozilla.com/~jkew/woff/")))

(define-public ttf2eot
  (package
    (name "ttf2eot")
    (version "0.0.2-2")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://storage.googleapis.com/"
                           "google-code-archive-downloads/v2/"
                           "code.google.com/ttf2eot/"
                           "ttf2eot-" version ".tar.gz"))
       (sha256
        (base32
         "1f4dzzmhn0208dvbm3ia5ar6ls9apwc6ampy5blmfxkigi6z0g02"))
       (patches (list (search-patch "ttf2eot-cstddef.patch")))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ;no tests
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)            ;no configuration
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin")))
               (install-file "ttf2eot" bin)))))))
    (synopsis "Convert from TrueType to Embeddable Open Type")
    (description
     "This package contains a commandline wrapper around OpenTypeUtilities.cpp
from Chromium, used to make EOT (Embeddable Open Type) files from
TTF (TrueType/OpenType Font) files.")
    ;; While the README states "License: Derived from WebKit, so BSD/LGPL
    ;; 2/LGPL 2.1", the single derived source file includes only BSD in its
    ;; license header, and the wrapper source contains no license header.
    (license license:bsd-2)
    (home-page "https://code.google.com/archive/p/ttf2eot/")))

(define-public woff2
  (let ((commit "4e698b8c6c5e070d53c340db9ddf160e21070ede")
        (revision "1"))
    (package
      (name "woff2")
      (version (string-append "20160306-" revision "."
                              (string-take commit 7)))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/google/woff2.git")
                      (commit commit)))
                (file-name (string-append name "-" version ".tar.xz"))
                (sha256
                 (base32
                  "0wka0yhf0cjmd4rv2jckxpyv6lb5ckj4nj0k1ajq5hrjy7f30lcp"))
                (patches (list (search-patch "woff2-libbrotli.patch")))))
      (build-system gnu-build-system)
      (native-inputs
       `(("pkg-config" ,pkg-config)))
      (inputs
       `(("brotli" ,brotli)))
      (arguments
       `(#:tests? #f                    ;no tests
         #:phases (modify-phases %standard-phases
                    (delete 'configure)
                    (replace 'install
                      (lambda* (#:key outputs #:allow-other-keys)
                        (let* ((out (assoc-ref outputs "out"))
                               (bin (string-append out "/bin")))
                          (install-file "woff2_compress" bin)
                          (install-file "woff2_decompress" bin)
                          #t))))))
      (synopsis "Compress TrueType fonts to WOFF2")
      (description
       "This package provides utilities for compressing/decompressing TrueType
fonts to/from the WOFF2 format.")
      (license license:asl2.0)
      (home-page "https://github.com/google/woff2"))))

(define-public fontconfig
  (package
   (name "fontconfig")
   (version "2.12.1")
   (source (origin
            (method url-fetch)
            (uri (string-append
                   "https://www.freedesktop.org/software/fontconfig/release/fontconfig-"
                   version ".tar.bz2"))
            (patches (search-patches "fontconfig-charwidth-symbol-conflict.patch"))
            (sha256 (base32
                     "1wy7svvp7df6bjpg1m5vizb3ngd7rhb20vpclv3x3qa71khs6jdl"))))
   (build-system gnu-build-system)
   (propagated-inputs `(("expat" ,expat)
                        ("freetype" ,freetype)))
   (inputs `(("gs-fonts" ,gs-fonts)))
   (native-inputs
      `(("pkg-config" ,pkg-config)))
   (arguments
    `(#:configure-flags
      (list "--with-cache-dir=/var/cache/fontconfig"
            ;; register gs-fonts as default fonts
            (string-append "--with-default-fonts="
                           (assoc-ref %build-inputs "gs-fonts")
                           "/share/fonts")

            ;; Register fonts from user and system profiles.
            (string-append "--with-add-fonts="
                           "~/.guix-profile/share/fonts,"
                           "/run/current-system/profile/share/fonts")

            ;; python is not actually needed
            "PYTHON=false")
      #:phases
      (modify-phases %standard-phases
        (add-after 'unpack 'fix-tests-for-freetype-2.7.1
          (lambda _
            (substitute* "test/run-test.sh"
              (("\\\| sort") "| cut -d' ' -f2 | sort"))
            #t))
        (replace 'install
                 (lambda _
                   ;; Don't try to create /var/cache/fontconfig.
                   (zero? (system* "make" "install"
                                   "fc_cachedir=$(TMPDIR)"
                                   "RUN_FC_CACHE_TEST=false")))))))
   (synopsis "Library for configuring and customizing font access")
   (description
    "Fontconfig can discover new fonts when installed automatically;
perform font name substitution, so that appropriate alternative fonts can
be selected if fonts are missing;
identify the set of fonts required to completely cover a set of languages;
have GUI configuration tools built as it uses an XML-based configuration file;
efficiently and quickly find needed fonts among the set of installed fonts;
be used in concert with the X Render Extension and FreeType to implement
high quality, anti-aliased and subpixel rendered text on a display.")
   ; The exact license is more X11-style than BSD-style.
   (license (license:non-copyleft "file://COPYING"
                       "See COPYING in the distribution."))
   (home-page "http://www.freedesktop.org/wiki/Software/fontconfig")))

(define-public t1lib
  (package
   (name "t1lib")
   (version "5.1.2")
   (source (origin
            (method url-fetch)
            (uri (list (string-append "ftp://sunsite.unc.edu/pub/Linux/libs/"
                                      "graphics/" name "-" version ".tar.gz")
                       (string-append "https://fossies.org/linux/misc/old/"
                                      name "-" version ".tar.gz")))
            (sha256 (base32
                     "0nbvjpnmcznib1nlgg8xckrmsw3haa154byds2h90y2g0nsjh4w2"))
            (patches (search-patches
                       "t1lib-CVE-2010-2642.patch"
                       "t1lib-CVE-2011-0764.patch"
                       "t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch"))))
   (build-system gnu-build-system)
   (arguments
    ;; Making the documentation requires latex, but t1lib is also an input
    ;; for building texlive.
    `(#:tests? #f ; no test target
      #:make-flags
      '("without_doc")))
   (synopsis "Library for generating bitmaps from Type 1 fonts")
   (description
    "T1lib is a library for generating/rasterising bitmaps from Type 1 fonts.
It is based on the code of the X11 rasteriser of the X11 project.

The bitmaps created by t1lib are returned in a data structure with type
GLYPH.  This special GLYPH-type is also used in the X11 window system to
describe character bitmaps.  It contains the bitmap data as well as some
metric information.  But t1lib is in itself entirely independent of the
X11-system or any other graphical user interface.")
   (license license:gpl2)
   (home-page "http://www.t1lib.org/")))

(define-public teckit
  (package
   (name "teckit")
   (version "2.5.4")
   (source (origin
            ;; Downloaded tarballs vary with each download, so we use an
            ;; svn snapshot. The 2.5.4 release seems to be made in r128,
            ;; but r132 updates additional files to contain the correct
            ;; version number (r129 to r131 do not concern TRUNK).
            (method svn-fetch)
            (uri (svn-reference
                   (url "https://scripts.sil.org/svn-public/teckit/TRUNK")
                   (revision 132)))
            (file-name (string-append name "-" version))
            (sha256
              (base32
                "1xqkqgw30pb24snh46srmjs2j4zhz2dfi5pf7znia0k34mrpwivz"))))
   (build-system gnu-build-system)
   (inputs `(("zlib" ,zlib)))
   (native-inputs
    `(("autoconf" ,autoconf)
      ("automake" ,automake)
      ("libtool" ,libtool)
      ("perl" ,perl))) ; for the tests
   (arguments
    `(#:phases
      (modify-phases %standard-phases
        (add-after 'unpack 'autogen
          (lambda _
            (zero? (system* "sh" "autogen.sh")))))))
   (synopsis "Toolkit for encoding conversions")
   (description
    "TECkit is a low-level toolkit intended to be used by other applications
that need to perform encoding conversions (e.g., when importing legacy data
into a Unicode-based application).  The primary component of the TECkit
package is therefore a library that performs conversions; this is the
\"TECkit engine\".  The engine relies on mapping tables in a specific binary
format (for which documentation is available); there is a compiler that
creates such tables from a human-readable mapping description (a simple
text file).

To facilitate the development and testing of mapping tables for TECkit,
several applications are also included in the current package; these
include simple tools for applying conversions to plain-text and Standard
Format files, as well as both command-line and simple GUI versions of the
TECkit compiler.  However, it is not intended that these tools will be the
primary means by which end users perform conversions, and they have not
been designed, tested, and debugged to the extent that general-purpose
applications should be.")
   (license license:lgpl2.1+)
   (home-page "http://scripts.sil.org/cms/scripts/page.php?cat_id=teckit")))

(define-public graphite2
  (package
   (name "graphite2")
   (version "1.3.9")
   (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/silnrsi/graphite/releases/"
                           "download/" version "/" name "-" version ".tgz"))
       (sha256
        (base32
         "0rs5h7m340z75kygx8d72cps0q6yvvqa9i788vym7585cfv8a0gc"))))
   (build-system cmake-build-system)
   (native-inputs
    `(("python" ,python-2) ; because of "import imap" in tests
      ("python-fonttools" ,python2-fonttools)))
   (inputs
    `(("freetype" ,freetype)))
   (synopsis "Reimplementation of the SIL Graphite text processing engine")
   (description
    "Graphite2 is a reimplementation of the SIL Graphite text processing
engine.  Graphite is a smart font technology designed to facilitate the
process known as shaping.  This process takes an input Unicode text string
and returns a sequence of positioned glyphids from the font.")
   (license license:lgpl2.1+)
   (home-page "https://github.com/silnrsi/graphite")))

(define-public potrace
  (package
    (name "potrace")
    (version "1.13")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "mirror://sourceforge/potrace/" version
                          "/potrace-" version ".tar.gz"))
      (sha256
       (base32
        "115p2vgyq7p2mf4nidk2x3aa341nvv2v8ml056vbji36df5l6lk2"))))
    (build-system gnu-build-system)
    (native-inputs `(("ghostscript" ,ghostscript))) ;for tests
    (inputs `(("zlib" ,zlib)))
    (arguments
     `(#:configure-flags
      `("--with-libpotrace"))) ; install library and headers
    (synopsis "Transform bitmaps into vector graphics")
    (description
     "Potrace is a tool for tracing a bitmap, which means, transforming a
bitmap into a smooth, scalable image.  The input is a bitmap (PBM, PGM, PPM,
or BMP format), and the default output is an encapsulated PostScript
file (EPS).  A typical use is to create EPS files from scanned data, such as
company or university logos, handwritten notes, etc.  The resulting image is
not \"jaggy\" like a bitmap, but smooth.  It can then be rendered at any
resolution.")
    (license license:gpl2+)
    (home-page "http://potrace.sourceforge.net/")))

(define-public libotf
  (package
    (name "libotf")
    (version "0.9.13")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://savannah/m17n/libotf-"
                                  version ".tar.gz"))
              (sha256
               (base32 "0239zvfan56w7vrppriwy77fzb10ag9llaz15nsraps2a2x6di3v"))))
    (build-system gnu-build-system)
    (propagated-inputs
     `(("freetype" ,freetype)))
    (home-page "http://www.nongnu.org/m17n/")
    (synopsis "Library for handling OpenType Font")
    (description "This library can read Open Type Layout Tables from an OTF
file.  Currently these tables are supported; head, name, cmap, GDEF, GSUB, and
GPOS.  It can convert a Unicode character sequence to a glyph code sequence by
using the above tables.")
    (license license:lgpl2.0+)))

(define-public libspiro
  (package
    (name "libspiro")
    (version "20071029")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "mirror://sourceforge/libspiro/libspiro/"
                          version "/libspiro_src-" version ".tar.bz2"))
      (sha256
       (base32
        "1kylz8pvwnb85yya150r9i6mhbpzx38f32qy523qg3ylgd9b3zhy"))))
    (build-system gnu-build-system)
    (arguments `(#:tests? #f))          ;no tests
    (synopsis "Clothoid to bezier conversion library")
    (description
     "Raph Levien's Spiro package as a library.  A mechanism for drawing
smooth contours with constant curvature at the spline joins.")
    (license license:gpl2+)
    (home-page "http://libspiro.sourceforge.net/")))

(define-public libuninameslist
  (package
    (name "libuninameslist")
    (version "20160701")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/fontforge/libuninameslist/"
                           "archive/" version ".tar.gz"))
       (file-name (string-append name "-" version ".tar.gz"))
       (sha256
        (base32
         "12xxb301a66dh282pywpy00wxiaq5z8z20qm3pr2vql04r2g8d0x"))))
    (build-system gnu-build-system)
    (native-inputs `(("autoconf" ,autoconf)
                     ("automake" ,automake)
                     ("libtool" ,libtool)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'bootstrap
           (lambda _ (zero? (system* "autoreconf" "-vi")))))))
    (synopsis "Unicode names and annotation list")
    (description
     "LibUniNamesList holds www.unicode.org Nameslist.txt data which can be
useful for programs that need Unicode \"Names\", \"Annotations\", and block
definitions.")
    (license license:gpl2)
    (home-page "https://github.com/fontforge/libuninameslist")))

(define-public fontforge
  (package
   (name "fontforge")
   (version "20160404")
   (source (origin
            (method url-fetch)
            (uri (string-append
                  "https://github.com/fontforge/fontforge/releases/download/"
                  version "/fontforge-dist-" version ".tar.gz"))
            (sha256 (base32
                     "1kavnhbkzc1hk6f39fynq9s0haama81ddrbld4b5x60d0dbaawvc"))
            (modules '((guix build utils)))
            (snippet
             '(begin
               ;; Make builds bit-reproducible by using fixed date strings.
               (substitute* "configure"
                 (("^FONTFORGE_MODTIME=.*$")
                  "FONTFORGE_MODTIME=\"1459819518L\"\n")
                 (("^FONTFORGE_MODTIME_STR=.*$")
                  "FONTFORGE_MODTIME_STR=\"20:25 CDT  4-Apr-2016\"\n")
                 (("^FONTFORGE_VERSIONDATE=.*$")
                  "FONTFORGE_VERSIONDATE=\"20160404\"\n"))))
            (patches (list (search-patch "fontforge-svg-modtime.patch")))))
   (build-system gnu-build-system)
   (native-inputs
    `(("pkg-config" ,pkg-config)))
   (inputs `(("cairo"           ,cairo)
             ("fontconfig"      ,fontconfig) ;dlopen'd
             ("freetype"        ,freetype)
             ("gettext"         ,gettext-minimal)
             ("glib"            ,glib) ;needed for pango detection
             ("libICE"          ,libice)
             ("libSM"           ,libsm)
             ("libX11"          ,libx11)
             ("libXi"           ,libxi)
             ("libjpeg"         ,libjpeg)
             ("libltdl"         ,libltdl)
             ("libpng"          ,libpng)
             ("libspiro"        ,libspiro)
             ("libtiff"         ,libtiff)
             ("libungif"        ,libungif)
             ("libuninameslist" ,libuninameslist)
             ("libxft"          ,libxft)
             ("libxml2"         ,libxml2)
             ("pango"           ,pango)
             ("potrace"         ,potrace)
             ("python"          ,python)
             ("zlib"            ,zlib)))
   (arguments
    '(#:tests? #f
      #:phases
      (modify-phases %standard-phases
        (add-after 'build 'build-contrib
          (lambda* (#:key outputs #:allow-other-keys)
            (let* ((out (assoc-ref outputs "out"))
                   (bin (string-append out "/bin")))
              (and (zero? (system* "make" "-Ccontrib/fonttools"
                                   "CC=gcc" "showttf"))
                   (begin (install-file "contrib/fonttools/showttf" bin)
                          #t)))))
        (add-after 'install 'set-library-path
          (lambda* (#:key inputs outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out"))
                  (potrace (string-append (assoc-ref inputs "potrace") "/bin")))
              (wrap-program (string-append out "/bin/fontforge")
                ;; Fontforge dynamically opens libraries.
                `("LD_LIBRARY_PATH" ":" prefix
                  ,(map (lambda (input)
                          (string-append (assoc-ref inputs input)
                                         "/lib"))
                        '("libtiff" "libjpeg" "libpng" "libungif"
                          "libxml2" "zlib" "libspiro" "freetype"
                          "pango" "cairo" "fontconfig")))
                ;; Checks for potrace program at runtime
                `("PATH" ":" prefix (,potrace)))))))))
   (synopsis "Outline font editor")
   (description
    "FontForge allows you to create and modify postscript, truetype and
opentype fonts.  You can save fonts in many different outline formats, and
generate bitmaps.")
   (license license:gpl3+)
   (home-page "http://fontforge.org/")))