[jackhill/guix/guix.git] / gnu / packages / vnc.scm

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Todor Kondić <tk.code@protonmail.com>
;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
;;;
;;; 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 vnc)
  #:use-module (guix build-system cmake)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix utils)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages base)
  #:use-module (gnu packages cmake)
  #:use-module (gnu packages commencement)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages image)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages sdl)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xorg))

(define-public tigervnc-client
  (let ((commit "920d9c4d6562ecabf79497bc901d50522d4bc661"))
    (package
      (name "tigervnc-client")
      (version (git-version "1.10.1" "1" commit))
      (source (origin
                (method git-fetch)
                (uri
                 (git-reference
                  (url "https://github.com/TigerVNC/tigervnc")
                  (commit commit)))
                (sha256
                 (base32
                  "1lp6mxl5dqlkrzx0q145jzgpbwvhsni3fj6x9ngf8v5s63x82q1p"))
                (file-name (git-file-name name version))))
      (build-system cmake-build-system)
      (arguments
       '(#:tests? #f ; Tests that do exists are not automated.
         #:phases (modify-phases %standard-phases
                    (replace 'install
                      (lambda* (#:key outputs #:allow-other-keys)
                        (with-directory-excursion "vncviewer"
                          (invoke "make" "install")))))))
      (native-inputs
       `(("autoconf" ,autoconf)
         ("gettext-minimal" ,gettext-minimal)
         ("automake" ,automake)))
      (inputs
       `(("zlib" ,zlib)
         ("gnutls" ,gnutls)
         ("libjpeg-turbo" ,libjpeg-turbo)
         ("fltk" ,fltk)
         ("linux-pam" ,linux-pam)
         ("libx11" ,libx11)
         ("libxext" ,libxext)
         ("libxtst" ,libxtst)
         ("libxrandr" ,libxrandr)
         ("libxdamage" ,libxdamage)))
      (home-page "https://tigervnc.org/")
      (synopsis "High-performance, platform-neutral
implementation of VNC (client)")
      (description "TigerVNC is a client/server implementation of VNC (Virtual
Network Computing).  It provides enough performance to run even 3D and video
applications.  It also provides extensions for advanced authentication methods
and TLS encryption.  This package installs only the VNC client, the
application which is needed to connect to VNC servers.")
      (license license:gpl2))))

;; A VNC server is, in fact, an X server so it seems like a good idea
;; to build on the work already done for xorg-server package.  This is
;; not entirely compatible with the recommendation in BUILDING.txt
;; where the client is built first, then the source code of the X
;; server is copied into a subdir of the build directory, patched with
;; VNC additions and then build and installed as Xvnc.  The procedure
;; was turned around, where TigerVNC code is downloaded and built
;; inside the Guix X server build dir. Also, the VNC patching process
;; for the X server is automated in a straightforward manner.
(define-public tigervnc-server
  (package
    (inherit xorg-server)
    (name "tigervnc-server")
    (version (package-version tigervnc-client))
    (native-inputs
     `(("tigervnc-src" ,(package-source tigervnc-client))
       ("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("gettext-minimal" ,gettext-minimal)
       ("font-util" ,font-util)
       ("cmake" ,cmake)
       ("gcc-toolchain" ,gcc-toolchain)
       ("perl" ,perl)
       ,@(package-native-inputs tigervnc-client)
       ,@(package-inputs tigervnc-client)
       ,@(package-native-inputs xorg-server)))
    (inputs
     `(("perl" ,perl)
       ("coreutils" ,coreutils)
       ("xauth" ,xauth)
       ,@(package-inputs xorg-server)))
    (propagated-inputs
     `(("xauth" ,xauth)
       ,@(package-propagated-inputs xorg-server)))
    (arguments
     (substitute-keyword-arguments
         (package-arguments xorg-server)
       ((#:configure-flags flags)
        `(append '("--with-pic"         ; Taken from BUILDING.txt
                   "--without-dtrace"
                   "--disable-static"
                   "--disable-dri2"
                   "--disable-xinerama"
                   "--disable-xvfb"
                   "--disable-xnest"
                   "--disable-xorg"
                   "--disable-dmx"
                   "--disable-xwin"
                   "--disable-xephyr"
                   "--disable-kdrive"
                   ;; "--disable-config-dbus" ; This was a warning.
                   "--disable-config-hal"
                   "--disable-config-udev"
                   "--disable-dri2"
                   ;; "--enable-install-libxf86config" ; This, too, was a warning.
                   "--enable-glx")
                 (delete "--enable-xephyr" ,flags)))
       ((#:modules modules)
        `(append '((ice-9 ftw)
                   (ice-9 match)
                   (guix build utils)
                   (guix build gnu-build-system))
                 modules))
       ((#:phases phases)
        `(modify-phases ,phases
           (delete 'check)              ;)
           (add-after 'unpack 'copy-tvnc-xserver
             (lambda _
               (let*
                   ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                    (tvnc-xserver (string-append tvnc-src "/unix/xserver")))
                 (copy-recursively tvnc-xserver ".")
                 #t)))
           (add-after 'copy-tvnc-xserver 'patch-xserver
             (lambda _
               (let*
                   ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                    (xorg-server-version ,(package-version xorg-server))
                    (which-patch (lambda ()
                                   (let*
                                       ((patch-num (apply string-append
                                                          (list-head (string-split xorg-server-version
                                                                                   #\.)
                                                                     2)))
                                        (fn (format #f "~a/unix/xserver~a.patch" tvnc-src patch-num)))
                                     (when (not (file-exists? fn))
                                       (error (format #f "Patch file, ~a,
corresponding to the input xorg-server version, does not exist.  Installation
will fail.  " fn)))

                                     fn))) ; VNC patches for xserver have the
                                           ; form xserverXY[Y].patch, where
                                           ; X.Y[Y].Z is the Xorg server
					; version.
                    (xserver-patch (which-patch)))
                 (invoke "patch" "-p1" "-i" xserver-patch)
                 (invoke "autoreconf" "-fiv"))))
           (add-before 'build 'build-tigervnc
             (lambda _
               (let* ((out (assoc-ref %outputs "out"))
                      (tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                      (tvnc-build (string-append (getcwd) "/tigervnc-build")))
                 (mkdir-p tvnc-build)
                 (with-directory-excursion tvnc-build
                   (invoke "cmake" "-G" "Unix Makefiles"
                           (string-append "-DCMAKE_INSTALL_PREFIX=" out)
                           tvnc-src)
                   (invoke "make" "-j" (number->string (parallel-job-count)))))))
           (replace 'build
             (lambda _
               (let*  ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (invoke "make" srcarg buildarg "-j"
                         (number->string (parallel-job-count))))))
           (add-before 'install 'install-tigervnc-aux
             (lambda _
               (let*  ((out (assoc-ref %outputs 'out))
                       (tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (with-directory-excursion (string-append tvnc-build "/unix")
                   (invoke "make" srcarg buildarg "install")))))
           (replace 'install
             (lambda* _
               (let*  ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
                       (tvnc-build (string-append (getcwd) "/tigervnc-build"))
                       (srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
                       (buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
                 (invoke "make" "install" srcarg buildarg))))))))
    (description "TigerVNC is a client/server implementation of VNC (Virtual
Network Computing).  It provides enough performance to run even 3D and video
applications.  It also provides extensions for advanced authentication methods
and TLS encryption.  This package installs the VNC server, a program that will
enable users with VNC clients to log into a graphical session on the machine
where the server is installed.")))

(define-public libvnc
  (package
    (name "libvnc")
    (version "0.9.13")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/LibVNC/libvncserver")
             (commit (string-append "LibVNCServer-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0zz0hslw8b1p3crnfy3xnmrljik359h83dpk64s697dqdcrzy141"))))
    (build-system cmake-build-system)
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-cc-reference
                    (lambda _
                      (substitute* "test/includetest.sh"
                        (("^cc -I")
                         "gcc -I"))
                      #t)))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("gnutls" ,gnutls)
       ("libgcrypt" ,libgcrypt)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("lzo" ,lzo)
       ("sdl2" ,sdl2)))
    (home-page "https://libvnc.github.io/")
    (synopsis "Cross-platform C libraries for implementing VNC server or
client")
    (description "This package provides @code{LibVNCServer} and
@code{LibVNCClient}.  These are cross-platform C libraries that allow you to
easily implement VNC server or client functionality in your program.")
    (license ;; GPL for programs, FDL for documentation
     (list license:gpl2+ license:fdl1.2+))))
Commit	Line	Data
0992cfa1 TK	1	;;; GNU Guix --- Functional package management for GNU
0992cfa1 TK	2	;;; Copyright © 2019 Todor Kondić <tk.code@protonmail.com>
3d4bf400	3	;;; Copyright © 2020 Oleg Pykhalov <go.wigust@gmail.com>
a789f654	4	;;; Copyright © 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
2195ad6b	5	;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
0992cfa1 TK	6	;;;
	7	;;; This file is part of GNU Guix.
	8	;;;
	9	;;; GNU Guix is free software; you can redistribute it and/or modify it
	10	;;; under the terms of the GNU General Public License as published by
	11	;;; the Free Software Foundation; either version 3 of the License, or (at
	12	;;; your option) any later version.
	13	;;;
	14	;;; GNU Guix is distributed in the hope that it will be useful, but
	15	;;; WITHOUT ANY WARRANTY; without even the implied warranty of
	16	;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	;;; GNU General Public License for more details.
	18	;;;
	19	;;; You should have received a copy of the GNU General Public License
	20	;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
	21
94c7ef93 HG	22	(define-module (gnu packages vnc)
	23	#:use-module (guix build-system cmake)
	24	#:use-module (guix download)
	25	#:use-module (guix git-download)
	26	#:use-module ((guix licenses) #:prefix license:)
	27	#:use-module (guix packages)
	28	#:use-module (guix utils)
a789f654	29	#:use-module (gnu packages)
0992cfa1	30	#:use-module (gnu packages autotools)
94c7ef93 HG	31	#:use-module (gnu packages base)
	32	#:use-module (gnu packages cmake)
	33	#:use-module (gnu packages commencement)
0992cfa1	34	#:use-module (gnu packages compression)
0992cfa1	35	#:use-module (gnu packages fltk)
94c7ef93	36	#:use-module (gnu packages gettext)
a789f654	37	#:use-module (gnu packages gnupg)
0992cfa1	38	#:use-module (gnu packages image)
94c7ef93	39	#:use-module (gnu packages linux)
0992cfa1	40	#:use-module (gnu packages perl)
a789f654 HG	41	#:use-module (gnu packages pkg-config)
a789f654 HG	42	#:use-module (gnu packages sdl)
94c7ef93 HG	43	#:use-module (gnu packages tls)
94c7ef93 HG	44	#:use-module (gnu packages xorg))
0992cfa1 TK	45
0992cfa1 TK	46	(define-public tigervnc-client
d58c9574 OP	47	(let ((commit "920d9c4d6562ecabf79497bc901d50522d4bc661"))
	48	(package
	49	(name "tigervnc-client")
	50	(version (git-version "1.10.1" "1" commit))
	51	(source (origin
	52	(method git-fetch)
	53	(uri
	54	(git-reference
b0e7b699	55	(url "https://github.com/TigerVNC/tigervnc")
d58c9574 OP	56	(commit commit)))
	57	(sha256
	58	(base32
	59	"1lp6mxl5dqlkrzx0q145jzgpbwvhsni3fj6x9ngf8v5s63x82q1p"))
	60	(file-name (git-file-name name version))))
	61	(build-system cmake-build-system)
	62	(arguments
	63	'(#:tests? #f ; Tests that do exists are not automated.
	64	#:phases (modify-phases %standard-phases
	65	(replace 'install
	66	(lambda* (#:key outputs #:allow-other-keys)
	67	(with-directory-excursion "vncviewer"
	68	(invoke "make" "install")))))))
	69	(native-inputs
	70	`(("autoconf" ,autoconf)
	71	("gettext-minimal" ,gettext-minimal)
	72	("automake" ,automake)))
	73	(inputs
	74	`(("zlib" ,zlib)
	75	("gnutls" ,gnutls)
	76	("libjpeg-turbo" ,libjpeg-turbo)
	77	("fltk" ,fltk)
	78	("linux-pam" ,linux-pam)
	79	("libx11" ,libx11)
	80	("libxext" ,libxext)
	81	("libxtst" ,libxtst)
	82	("libxrandr" ,libxrandr)
	83	("libxdamage" ,libxdamage)))
	84	(home-page "https://tigervnc.org/")
	85	(synopsis "High-performance, platform-neutral
0992cfa1	86	implementation of VNC (client)")
d58c9574	87	(description "TigerVNC is a client/server implementation of VNC (Virtual
0992cfa1 TK	88	Network Computing). It provides enough performance to run even 3D and video
	89	applications. It also provides extensions for advanced authentication methods
	90	and TLS encryption. This package installs only the VNC client, the
	91	application which is needed to connect to VNC servers.")
d58c9574	92	(license license:gpl2))))
04784d21 TK	93
	94	;; A VNC server is, in fact, an X server so it seems like a good idea
	95	;; to build on the work already done for xorg-server package. This is
	96	;; not entirely compatible with the recommendation in BUILDING.txt
	97	;; where the client is built first, then the source code of the X
	98	;; server is copied into a subdir of the build directory, patched with
	99	;; VNC additions and then build and installed as Xvnc. The procedure
	100	;; was turned around, where TigerVNC code is downloaded and built
	101	;; inside the Guix X server build dir. Also, the VNC patching process
	102	;; for the X server is automated in a straightforward manner.
	103	(define-public tigervnc-server
	104	(package
	105	(inherit xorg-server)
	106	(name "tigervnc-server")
d58c9574	107	(version (package-version tigervnc-client))
04784d21	108	(native-inputs
d58c9574	109	`(("tigervnc-src" ,(package-source tigervnc-client))
04784d21 TK	110	("autoconf" ,autoconf)
	111	("automake" ,automake)
	112	("libtool" ,libtool)
	113	("gettext-minimal" ,gettext-minimal)
	114	("font-util" ,font-util)
	115	("cmake" ,cmake)
	116	("gcc-toolchain" ,gcc-toolchain)
	117	("perl" ,perl)
	118	,@(package-native-inputs tigervnc-client)
	119	,@(package-inputs tigervnc-client)
	120	,@(package-native-inputs xorg-server)))
	121	(inputs
	122	`(("perl" ,perl)
	123	("coreutils" ,coreutils)
	124	("xauth" ,xauth)
	125	,@(package-inputs xorg-server)))
	126	(propagated-inputs
	127	`(("xauth" ,xauth)
	128	,@(package-propagated-inputs xorg-server)))
	129	(arguments
	130	(substitute-keyword-arguments
	131	(package-arguments xorg-server)
	132	((#:configure-flags flags)
	133	`(append '("--with-pic" ; Taken from BUILDING.txt
	134	"--without-dtrace"
	135	"--disable-static"
	136	"--disable-dri2"
	137	"--disable-xinerama"
	138	"--disable-xvfb"
	139	"--disable-xnest"
	140	"--disable-xorg"
	141	"--disable-dmx"
	142	"--disable-xwin"
d8de3856	143	"--disable-xephyr"
04784d21 TK	144	"--disable-kdrive"
	145	;; "--disable-config-dbus" ; This was a warning.
	146	"--disable-config-hal"
	147	"--disable-config-udev"
	148	"--disable-dri2"
	149	;; "--enable-install-libxf86config" ; This, too, was a warning.
	150	"--enable-glx")
d8de3856	151	(delete "--enable-xephyr" ,flags)))
04784d21 TK	152	((#:modules modules)
	153	`(append '((ice-9 ftw)
	154	(ice-9 match)
	155	(guix build utils)
	156	(guix build gnu-build-system))
	157	modules))
	158	((#:phases phases)
	159	`(modify-phases ,phases
	160	(delete 'check) ;)
	161	(add-after 'unpack 'copy-tvnc-xserver
	162	(lambda _
	163	(let*
	164	((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	165	(tvnc-xserver (string-append tvnc-src "/unix/xserver")))
	166	(copy-recursively tvnc-xserver ".")
	167	#t)))
	168	(add-after 'copy-tvnc-xserver 'patch-xserver
	169	(lambda _
	170	(let*
	171	((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	172	(xorg-server-version ,(package-version xorg-server))
	173	(which-patch (lambda ()
	174	(let*
	175	((patch-num (apply string-append
	176	(list-head (string-split xorg-server-version
	177	#\.)
	178	2)))
d58c9574	179	(fn (format #f "~a/unix/xserver~a.patch" tvnc-src patch-num)))
04784d21	180	(when (not (file-exists? fn))
d58c9574	181	(error (format #f "Patch file, ~a,
04784d21 TK	182	corresponding to the input xorg-server version, does not exist. Installation
	183	will fail. " fn)))
	184
	185	fn))) ; VNC patches for xserver have the
	186	; form xserverXY[Y].patch, where
	187	; X.Y[Y].Z is the Xorg server
	188	; version.
	189	(xserver-patch (which-patch)))
	190	(invoke "patch" "-p1" "-i" xserver-patch)
	191	(invoke "autoreconf" "-fiv"))))
	192	(add-before 'build 'build-tigervnc
	193	(lambda _
	194	(let* ((out (assoc-ref %outputs "out"))
	195	(tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	196	(tvnc-build (string-append (getcwd) "/tigervnc-build")))
	197	(mkdir-p tvnc-build)
	198	(with-directory-excursion tvnc-build
	199	(invoke "cmake" "-G" "Unix Makefiles"
	200	(string-append "-DCMAKE_INSTALL_PREFIX=" out)
	201	tvnc-src)
	202	(invoke "make" "-j" (number->string (parallel-job-count)))))))
	203	(replace 'build
	204	(lambda _
	205	(let* ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	206	(tvnc-build (string-append (getcwd) "/tigervnc-build"))
	207	(srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
	208	(buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
	209	(invoke "make" srcarg buildarg "-j"
	210	(number->string (parallel-job-count))))))
	211	(add-before 'install 'install-tigervnc-aux
	212	(lambda _
	213	(let* ((out (assoc-ref %outputs 'out))
	214	(tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	215	(tvnc-build (string-append (getcwd) "/tigervnc-build"))
	216	(srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
	217	(buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
	218	(with-directory-excursion (string-append tvnc-build "/unix")
	219	(invoke "make" srcarg buildarg "install")))))
	220	(replace 'install
	221	(lambda* _
	222	(let* ((tvnc-src (assoc-ref %build-inputs "tigervnc-src"))
	223	(tvnc-build (string-append (getcwd) "/tigervnc-build"))
	224	(srcarg (string-append "TIGERVNC_SRCDIR=" tvnc-src))
	225	(buildarg (string-append "TIGERVNC_BUILDDIR=" tvnc-build)))
	226	(invoke "make" "install" srcarg buildarg))))))))
	227	(description "TigerVNC is a client/server implementation of VNC (Virtual
	228	Network Computing). It provides enough performance to run even 3D and video
	229	applications. It also provides extensions for advanced authentication methods
	230	and TLS encryption. This package installs the VNC server, a program that will
	231	enable users with VNC clients to log into a graphical session on the machine
	232	where the server is installed.")))
a789f654 HG	233
	234	(define-public libvnc
	235	(package
	236	(name "libvnc")
2195ad6b	237	(version "0.9.13")
a789f654 HG	238	(source
	239	(origin
	240	(method git-fetch)
	241	(uri (git-reference
b0e7b699	242	(url "https://github.com/LibVNC/libvncserver")
a789f654 HG	243	(commit (string-append "LibVNCServer-" version))))
	244	(file-name (git-file-name name version))
	245	(sha256
2195ad6b	246	(base32 "0zz0hslw8b1p3crnfy3xnmrljik359h83dpk64s697dqdcrzy141"))))
a789f654	247	(build-system cmake-build-system)
2195ad6b MB	248	(arguments
	249	'(#:phases (modify-phases %standard-phases
	250	(add-after 'unpack 'patch-cc-reference
	251	(lambda _
	252	(substitute* "test/includetest.sh"
	253	(("^cc -I")
	254	"gcc -I"))
	255	#t)))))
a789f654 HG	256	(native-inputs
	257	`(("pkg-config" ,pkg-config)))
	258	(inputs
	259	`(("gnutls" ,gnutls)
	260	("libgcrypt" ,libgcrypt)
12d8adbf	261	("libjpeg" ,libjpeg-turbo)
a789f654 HG	262	("libpng" ,libpng)
	263	("lzo" ,lzo)
	264	("sdl2" ,sdl2)))
	265	(home-page "https://libvnc.github.io/")
	266	(synopsis "Cross-platform C libraries for implementing VNC server or
	267	client")
	268	(description "This package provides @code{LibVNCServer} and
	269	@code{LibVNCClient}. These are cross-platform C libraries that allow you to
	270	easily implement VNC server or client functionality in your program.")
	271	(license ;; GPL for programs, FDL for documentation
	272	(list license:gpl2+ license:fdl1.2+))))