gnu/packages/backup.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2014, 2015 Eric Bavier <bavier@member.fsf.org>
   3 ;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net>
   4 ;;; Copyright © 2015, 2016, 2017 Leo Famulari <leo@famulari.name>
   5 ;;; Copyright © 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
   6 ;;; Copyright © 2017 Thomas Danckaert <post@thomasdanckaert.be>
   7 ;;; Copyright © 2017 Arun Isaac <arunisaac@systemreboot.net>
   8 ;;; Copyright © 2017 Kei Kebreau <kkebreau@posteo.net>
   9 ;;; Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
  10 ;;; Copyright © 2017 Christopher Allan Webber <cwebber@dustycloud.org>
  11 ;;; Copyright © 2017 Rutger Helling <rhelling@mykolab.com>
  12 ;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
  13 ;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
  14 ;;; Copyright © 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
  15 ;;; Copyright © 2019 Alex Vong <alexvong1995@gmail.com>
  16 ;;; Copyright © 2019 Marius Bakke <mbakke@fastmail.com>
  17 ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
  18 ;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
  19 ;;; Copyright © 2020 Marcin Karpezo <sirmacik@wioo.waw.pl>
  20 ;;;
  21 ;;; This file is part of GNU Guix.
  22 ;;;
  23 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  24 ;;; under the terms of the GNU General Public License as published by
  25 ;;; the Free Software Foundation; either version 3 of the License, or (at
  26 ;;; your option) any later version.
  27 ;;;
  28 ;;; GNU Guix is distributed in the hope that it will be useful, but
  29 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  30 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  31 ;;; GNU General Public License for more details.
  32 ;;;
  33 ;;; You should have received a copy of the GNU General Public License
  34 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  35
  36 (define-module (gnu packages backup)
  37   #:use-module (guix packages)
  38   #:use-module ((guix licenses) #:prefix license:)
  39   #:use-module (guix git-download)
  40   #:use-module (guix download)
  41   #:use-module (guix utils)
  42   #:use-module (guix build-system cmake)
  43   #:use-module (guix build-system gnu)
  44   #:use-module (guix build-system go)
  45   #:use-module (guix build-system python)
  46   #:use-module (gnu packages)
  47   #:use-module (gnu packages acl)
  48   #:use-module (gnu packages autotools)
  49   #:use-module (gnu packages base)
  50   #:use-module (gnu packages check)
  51   #:use-module (gnu packages compression)
  52   #:use-module (gnu packages crypto)
  53   #:use-module (gnu packages databases)
  54   #:use-module (gnu packages datastructures)
  55   #:use-module (gnu packages dbm)
  56   #:use-module (gnu packages dejagnu)
  57   #:use-module (gnu packages ftp)
  58   #:use-module (gnu packages glib)
  59   #:use-module (gnu packages gnupg)
  60   #:use-module (gnu packages golang)
  61   #:use-module (gnu packages gperf)
  62   #:use-module (gnu packages guile)
  63   #:use-module (gnu packages linux)
  64   #:use-module (gnu packages mcrypt)
  65   #:use-module (gnu packages nettle)
  66   #:use-module (gnu packages onc-rpc)
  67   #:use-module (gnu packages pcre)
  68   #:use-module (gnu packages perl)
  69   #:use-module (gnu packages pkg-config)
  70   #:use-module (gnu packages protobuf)
  71   #:use-module (gnu packages python)
  72   #:use-module (gnu packages python-crypto)
  73   #:use-module (gnu packages python-web)
  74   #:use-module (gnu packages python-xyz)
  75   #:use-module (gnu packages rsync)
  76   #:use-module (gnu packages ssh)
  77   #:use-module (gnu packages tls)
  78   #:use-module (gnu packages xml))
  79
  80 (define-public duplicity
  81   (package
  82     (name "duplicity")
  83     (version "0.7.19")
  84     (source
  85      (origin
  86       (method url-fetch)
  87       (uri (string-append "https://code.launchpad.net/duplicity/"
  88                           (version-major+minor version)
  89                           "-series/" version "/+download/duplicity-"
  90                           version ".tar.gz"))
  91       (sha256
  92        (base32 "0ag9dknslxlasslwfjhqgcqbkb1mvzzx93ry7lch2lfzcdd91am6"))))
  93     (build-system python-build-system)
  94     (native-inputs
  95      `(("util-linux" ,util-linux)       ; setsid command, for the tests
  96        ("par2cmdline" ,par2cmdline)
  97        ("python-pexpect" ,python2-pexpect)
  98        ("python-fasteners" ,python2-fasteners)
  99        ("tzdata" ,tzdata-for-tests)
 100        ("mock" ,python2-mock)))
 101     (propagated-inputs
 102      `(("lockfile" ,python2-lockfile)
 103        ("urllib3" ,python2-urllib3)))
 104     (inputs
 105      `(("librsync" ,librsync-0.9)
 106        ("lftp" ,lftp)
 107        ("gnupg" ,gnupg)                 ; gpg executable needed
 108        ("util-linux" ,util-linux)))     ; for setsid
 109     (arguments
 110      `(#:python ,python-2               ; setup assumes Python 2
 111        #:test-target "test"
 112        #:phases
 113        (modify-phases %standard-phases
 114          (add-before 'build 'use-store-file-names
 115            (lambda* (#:key inputs #:allow-other-keys)
 116              (substitute* "duplicity/gpginterface.py"
 117                (("self.call = 'gpg'")
 118                 (string-append "self.call = '" (assoc-ref inputs "gnupg") "/bin/gpg'")))
 119
 120              (substitute* '("testing/functional/__init__.py"
 121                             "testing/overrides/bin/lftp")
 122                (("/bin/sh") (which "sh")))
 123              #t))
 124          (add-before 'check 'check-setup
 125            (lambda* (#:key inputs #:allow-other-keys)
 126              (setenv "HOME" (getcwd))   ; gpg needs to write to $HOME
 127              (setenv "TZDIR"            ; some timestamp checks need TZDIR
 128                      (string-append (assoc-ref inputs "tzdata")
 129                                     "/share/zoneinfo"))
 130              #t)))))
 131     (home-page "http://duplicity.nongnu.org/index.html")
 132     (synopsis "Encrypted backup using rsync algorithm")
 133     (description
 134      "Duplicity backs up directories by producing encrypted tar-format volumes
 135 and uploading them to a remote or local file server.  Because duplicity uses
 136 librsync, the incremental archives are space efficient and only record the
 137 parts of files that have changed since the last backup.  Because duplicity
 138 uses GnuPG to encrypt and/or sign these archives, they will be safe from
 139 spying and/or modification by the server.")
 140     (license license:gpl2+)))
 141
 142 (define-public par2cmdline
 143   (package
 144     (name "par2cmdline")
 145     (version "0.8.0")
 146     (source (origin
 147               (method git-fetch)
 148               (uri (git-reference
 149                     (url "https://github.com/Parchive/par2cmdline")
 150                     (commit (string-append "v" version))))
 151               (file-name (git-file-name name version))
 152               (sha256
 153                (base32
 154                 "0f1jsd5sw2wynjzi7yjqjaf13yhyjfdid91p8yh0jn32y03kjyrz"))))
 155     (native-inputs
 156      `(("automake" ,automake)
 157        ("autoconf" ,autoconf)))
 158     (build-system gnu-build-system)
 159     (synopsis "File verification and repair tools")
 160     (description "Par2cmdline uses Reed-Solomon error-correcting codes to
 161 generate and verify PAR2 recovery files.  These files can be distributed
 162 alongside the source files or stored together with back-ups to protect against
 163 transmission errors or @dfn{bit rot}, the degradation of storage media over
 164 time.
 165 Unlike a simple checksum, PAR2 doesn't merely detect errors: as long as the
 166 damage isn't too extensive (and smaller than the size of the recovery file), it
 167 can even repair them.")
 168     (home-page "https://github.com/Parchive/par2cmdline")
 169     (license license:gpl3+)))
 170
 171 (define-public hdup
 172   (package
 173     (name "hdup")
 174     (version "2.0.14")
 175     (source
 176      (origin
 177       (method url-fetch)
 178       (uri "https://fossies.org/linux/privat/old/hdup-2.0.14.tar.bz2")
 179       (sha256
 180        (base32
 181         "02bnczg01cyhajmm4rhbnc0ja0dd9ikv9fwv28asxh1rlx9yr0b7"))))
 182     (build-system gnu-build-system)
 183     (native-inputs `(("pkg-config" ,pkg-config)))
 184     (inputs
 185      `(("glib" ,glib)
 186        ("tar" ,tar)
 187        ("lzop" ,lzop)
 188        ("mcrypt" ,mcrypt)
 189        ("openssh" ,openssh)
 190        ("gnupg" ,gnupg-1)))
 191     (arguments
 192      `(#:configure-flags
 193        `(,(string-append "--sbindir=" (assoc-ref %outputs "out") "/bin"))
 194        #:tests? #f))
 195     (home-page (string-append "http://web.archive.org/web/20150925223424/"
 196                               "http://archive.miek.nl/projects/hdup/index.html"))
 197     (synopsis "Simple incremental backup tool")
 198     (description
 199      "Hdup2 is a backup utility, its aim is to make backup really simple.  The
 200 backup scheduling is done by means of a cron job.  It supports an
 201 include/exclude mechanism, remote backups, encrypted backups and split
 202 backups (called chunks) to allow easy burning to CD/DVD.")
 203     (license license:gpl2)))
 204
 205 (define-public libarchive
 206   (package
 207     (name "libarchive")
 208     (version "3.4.2")
 209     (source
 210      (origin
 211        (method url-fetch)
 212        (uri (list (string-append "https://libarchive.org/downloads/libarchive-"
 213                                  version ".tar.xz")
 214                   (string-append "https://github.com/libarchive/libarchive"
 215                                  "/releases/download/v" version "/libarchive-"
 216                                  version ".tar.xz")))
 217        (sha256
 218         (base32
 219          "18dd01ahs2hv74xm7axjc3yhq839p0x0s4vssvlmm8fknja09qfq"))))
 220     (build-system gnu-build-system)
 221     (inputs
 222      `(("bzip2" ,bzip2)
 223        ("libxml2" ,libxml2)
 224        ("lzo" ,lzo)
 225        ("nettle" ,nettle)
 226        ("xz" ,xz)
 227        ("zlib" ,zlib)
 228        ("zstd" ,zstd "lib")))
 229     (arguments
 230      `(#:configure-flags '("--disable-static")
 231        #:phases
 232        (modify-phases %standard-phases
 233          (add-before 'build 'patch-pwd
 234            (lambda _
 235              (substitute* "Makefile"
 236                (("/bin/pwd") (which "pwd")))
 237              #t))
 238          (replace 'check
 239            (lambda* (#:key (tests? #t) #:allow-other-keys)
 240              (if tests?
 241                  ;; XXX: The test_owner_parse, test_read_disk, and
 242                  ;; test_write_disk_lookup tests expect user 'root' to
 243                  ;; exist, but the chroot's /etc/passwd doesn't have
 244                  ;; it.  Turn off those tests.
 245                  ;;
 246                  ;; XXX: Adjust test that fails with zstd 1.4.1
 247                  ;; because the default options compresses two bytes
 248                  ;; better than this test expects.
 249                  ;; https://github.com/libarchive/libarchive/issues/1226
 250                  (begin
 251                    (substitute* "libarchive/test/test_write_filter_zstd.c"
 252                      (("compression-level\", \"6\"")
 253                       "compression-level\", \"7\""))
 254
 255                    ;; The tests allow one to disable tests matching a globbing pattern.
 256                    (invoke "make"
 257                            "libarchive_test"
 258                            "bsdcpio_test"
 259                            "bsdtar_test")
 260
 261                    ;; XXX: This glob disables too much.
 262                    (invoke "./libarchive_test" "^test_*_disk*")
 263                    (invoke "./bsdcpio_test" "^test_owner_parse")
 264                    (invoke "./bsdtar_test"))
 265                  ;; Tests may be disabled if cross-compiling.
 266                  (format #t "Test suite not run.~%"))))
 267          (add-after 'install 'add--L-in-libarchive-pc
 268            (lambda* (#:key inputs outputs #:allow-other-keys)
 269              (let* ((out     (assoc-ref outputs "out"))
 270                     (lib     (string-append out "/lib"))
 271                     (nettle  (assoc-ref inputs "nettle"))
 272                     (libxml2 (assoc-ref inputs "libxml2"))
 273                     (xz      (assoc-ref inputs "xz"))
 274                     (zlib    (assoc-ref inputs "zlib"))
 275                     (zstd    (assoc-ref inputs "zstd"))
 276                     (bzip2   (assoc-ref inputs "bzip2")))
 277                ;; Embed absolute references to these inputs to avoid propagation.
 278                (substitute* (list (string-append lib "/pkgconfig/libarchive.pc")
 279                                   (string-append lib "/libarchive.la"))
 280                  (("-lnettle")
 281                   (string-append "-L" nettle "/lib -lnettle"))
 282                  (("-lxml2")
 283                   (string-append "-L" libxml2 "/lib -lxml2"))
 284                  (("-llzma")
 285                   (string-append "-L" xz "/lib -llzma"))
 286                  (("-lz")
 287                   (string-append "-L" zlib "/lib -lz"))
 288                  (("-lzstd")
 289                   (string-append "-L" zstd "/lib -lzstd"))
 290                  (("-lbz2")
 291                   (string-append "-L" bzip2 "/lib -lbz2")))
 292                #t))))))
 293     (home-page "https://libarchive.org/")
 294     (synopsis "Multi-format archive and compression library")
 295     (description
 296      "Libarchive provides a flexible interface for reading and writing
 297 archives in various formats such as tar and cpio.  Libarchive also supports
 298 reading and writing archives compressed using various compression filters such
 299 as gzip and bzip2.  The library is inherently stream-oriented; readers
 300 serially iterate through the archive, writers serially add things to the
 301 archive.  In particular, note that there is currently no built-in support for
 302 random access nor for in-place modification.")
 303     (license license:bsd-2)))
 304
 305 (define-public rdup
 306   (package
 307     (name "rdup")
 308     (version "1.1.15")
 309     (source
 310      (origin
 311        (method git-fetch)
 312        (uri (git-reference
 313              (url "https://github.com/miekg/rdup")
 314              (commit version)))
 315        (file-name (git-file-name name version))
 316        (sha256
 317         (base32 "0bzyv6qmnivxnv9nw7lnfn46k0m1dlxcjj53zcva6v8y8084l1iw"))))
 318     (build-system gnu-build-system)
 319     (native-inputs
 320      `(("autoconf" ,autoconf)
 321        ("automake" ,automake)
 322        ("pkg-config" ,pkg-config)
 323
 324        ;; For tests.
 325        ("dejagnu" ,dejagnu)))
 326     (inputs
 327      ;; XXX Compiling with nettle (encryption) support requires patching out
 328      ;; -Werror from GNUmakefile.in.  Then, rdup-tr-{en,de}crypt tests fail:
 329      ;; free(): invalid pointer
 330      ;; ** rdup-tr: SIGPIPE received, exiting
 331      `(("glib" ,glib)
 332        ("pcre" ,pcre)
 333        ("libarchive" ,libarchive)
 334        ("mcrypt" ,mcrypt)))
 335     (arguments
 336      `(#:parallel-build? #f             ;race conditions
 337        #:phases
 338        (modify-phases %standard-phases
 339          (add-before 'build 'qualify-inputs
 340            (lambda* (#:key inputs #:allow-other-keys)
 341              ;; This script is full of pitfalls.  Fix some that particularly
 342              ;; affect Guix users & leave the rest as reader excercises.
 343              (substitute* "rdup-simple"
 344                ;; Use the input ‘mcrypt’, not whatever's in $PATH at run time.
 345                (("([' ])mcrypt " all delimiter)
 346                 (string-append delimiter (which "mcrypt") " "))
 347                ;; Avoid frivolous dependency on ‘which’ with a shell builtin.
 348                (("which") "command -v"))
 349              #t))
 350          (add-before 'check 'disable-encryption-tests
 351            (lambda _
 352              (for-each delete-file
 353                        (list "testsuite/rdup/rdup.rdup-tr-crypt.exp"
 354                              "testsuite/rdup/rdup.rdup-tr-decrypt.exp"
 355                              "testsuite/rdup/rdup.rdup-tr-encrypt.exp"))
 356              #t))
 357          (add-before 'check 'pre-check
 358            (lambda _
 359              (setenv "HOME" (getcwd))
 360              (substitute* "testsuite/rdup/rdup.rdup-up-t-with-file.exp"
 361                (("/bin/cat") (which "cat")))
 362              #t)))))
 363     (home-page "https://github.com/miekg/rdup")
 364     (synopsis "Provide a list of files to backup")
 365     (description
 366      "Rdup is a utility inspired by rsync and the plan9 way of doing backups.
 367 Rdup itself does not backup anything, it only print a list of absolute
 368 file names to standard output.  Auxiliary scripts are needed that act on this
 369 list and implement the backup strategy.")
 370     (license license:gpl3+)))
 371
 372 (define-public btar
 373   (package
 374     (name "btar")
 375     (version "1.1.1")
 376     (source
 377      (origin
 378        (method url-fetch)
 379        (uri (string-append "http://vicerveza.homeunix.net/~viric/soft/btar/"
 380                            "btar-" version ".tar.gz"))
 381        (sha256
 382         (base32
 383          "0miklk4bqblpyzh1bni4x6lqn88fa8fjn15x1k1n8bxkx60nlymd"))))
 384     (build-system gnu-build-system)
 385     (inputs
 386      `(("librsync" ,librsync-0.9)))
 387     (arguments
 388      `(#:make-flags `(,(string-append "PREFIX=" (assoc-ref %outputs "out"))
 389                       "CC=gcc")
 390        #:tests? #f                      ;test input not distributed
 391        #:phases
 392        ;; no configure phase
 393        (modify-phases %standard-phases
 394          (delete 'configure))))
 395     (home-page "http://viric.name/cgi-bin/btar/doc/trunk/doc/home.wiki")
 396     (synopsis "Tar-compatible archiver")
 397     (description
 398      "Btar is a tar-compatible archiver which allows arbitrary compression and
 399 ciphering, redundancy, differential backup, indexed extraction, multicore
 400 compression, input and output serialisation, and tolerance to partial archive
 401 errors.")
 402     (license license:gpl3+)))
 403
 404 (define-public rdiff-backup
 405   (package
 406     (name "rdiff-backup")
 407     (version "1.2.8")
 408     (source
 409      (origin
 410        (method url-fetch)
 411        (uri (string-append "mirror://savannah/rdiff-backup/rdiff-backup-"
 412                            version ".tar.gz"))
 413        (sha256
 414         (base32
 415          "1nwmmh816f96h0ff1jxk95ad38ilbhbdl5dgibx1d4cl81dsi48d"))))
 416     (build-system python-build-system)
 417     (inputs
 418      `(("python" ,python-2)
 419        ("librsync" ,librsync-0.9)))
 420     (arguments
 421      `(#:python ,python-2
 422        #:tests? #f))
 423     (home-page "https://www.nongnu.org/rdiff-backup/")
 424     (synopsis "Local/remote mirroring+incremental backup")
 425     (description
 426      "Rdiff-backup backs up one directory to another, possibly over a network.
 427 The target directory ends up a copy of the source directory, but extra reverse
 428 diffs are stored in a special subdirectory of that target directory, so you
 429 can still recover files lost some time ago.  The idea is to combine the best
 430 features of a mirror and an incremental backup.  Rdiff-backup also preserves
 431 subdirectories, hard links, dev files, permissions, uid/gid ownership,
 432 modification times, extended attributes, acls, and resource forks.  Also,
 433 rdiff-backup can operate in a bandwidth efficient manner over a pipe, like
 434 rsync.  Thus you can use rdiff-backup and ssh to securely back a hard drive up
 435 to a remote location, and only the differences will be transmitted.  Finally,
 436 rdiff-backup is easy to use and settings have sensible defaults.")
 437     (license license:gpl2+)))
 438
 439 (define-public rsnapshot
 440   (package
 441     (name "rsnapshot")
 442     (version "1.4.3")
 443     (source
 444      (origin
 445        (method url-fetch)
 446        (uri (string-append
 447              "https://github.com/rsnapshot/rsnapshot/releases/download/"
 448              version "/rsnapshot-" version ".tar.gz"))
 449        (sha256
 450         (base32 "1lavqmmsf53pim0nvming7fkng6p0nk2a51k2c2jdq0l7snpl31b"))))
 451     (build-system gnu-build-system)
 452     (arguments
 453      `(#:phases
 454        (modify-phases %standard-phases
 455          (replace 'check
 456            (lambda _
 457              (substitute* '("t/cmd-post_pre-exec/conf/pre-true-post-true.conf"
 458                             "t/backup_exec/conf/backup_exec_fail.conf"
 459                             "t/backup_exec/conf/backup_exec.conf")
 460                (("/bin/true") (which "true"))
 461                (("/bin/false") (which "false")))
 462
 463              ;; Disable a test that tries to connect to localhost on port 22.
 464              (delete-file "t/ssh_args/ssh_args.t.in")
 465
 466              (invoke "make" "test"))))))
 467     (inputs
 468      `(("perl" ,perl)
 469        ("rsync" ,rsync)))
 470     (home-page "https://rsnapshot.org")
 471     (synopsis "Deduplicating snapshot backup utility based on rsync")
 472     (description "rsnapshot is a file system snapshot utility based on rsync.
 473 rsnapshot makes it easy to make periodic snapshots of local machines, and
 474 remote machines over SSH.  To reduce the disk space required for each backup,
 475 rsnapshot uses hard links to deduplicate identical files.")
 476     (license license:gpl2+)))
 477
 478 (define-public libchop
 479   (package
 480     (name "libchop")
 481     (version "0.5.2")
 482     (source (origin
 483               (method url-fetch)
 484               (uri (string-append "mirror://savannah/libchop/libchop-"
 485                                   version ".tar.gz"))
 486               (sha256
 487                (base32
 488                 "0fpdyxww41ba52d98blvnf543xvirq1v9xz1i3x1gm9lzlzpmc2g"))
 489               (patches (search-patches "diffutils-gets-undeclared.patch"))
 490               (modules '((guix build utils)))
 491               (snippet
 492                '(begin
 493                   ;; Include all the libtirpc headers necessary to get the
 494                   ;; definitions of 'u_int', etc.
 495                   (substitute* '("src/block-server.c"
 496                                  "include/chop/block-server.h"
 497                                  "utils/chop-block-server.c")
 498                     (("#include <rpc/(.*)\\.h>" _ header)
 499                      (string-append "#include <rpc/types.h>\n"
 500                                     "#include <rpc/rpc.h>\n"
 501                                     "#include <rpc/" header ".h>\n")))
 502                   #t))))
 503     (build-system gnu-build-system)
 504     (arguments
 505      '(;; Link against libtirpc.
 506        #:configure-flags '("LDFLAGS=-ltirpc -Wl,--as-needed")
 507
 508        #:phases (modify-phases %standard-phases
 509                   (add-before 'configure 'adjust-configure-script
 510                     (lambda _
 511                       ;; Mimic upstream commit
 512                       ;; 25750ab5ef82fd3cfce5205d5f1ef07b47098091.
 513                       (substitute* "configure"
 514                         (("GUILE=(.*)--variable bindir`" _ middle)
 515                          (string-append "GUILE=" middle
 516                                         "--variable bindir`/guile")))
 517                       #t))
 518                   (add-before 'build 'set-libtirpc-include-path
 519                     (lambda* (#:key inputs #:allow-other-keys)
 520                       ;; Allow <rpc/rpc.h> & co. to be found.
 521                       (let ((libtirpc (assoc-ref inputs "libtirpc")))
 522                         (setenv "CPATH"
 523                                 (string-append (getenv "CPATH")
 524                                                ":" libtirpc
 525                                                "/include/tirpc"))
 526                         #t)))
 527                   (add-before 'check 'skip-test
 528                     (lambda _
 529                       ;; XXX: This test fails (1) because current GnuTLS no
 530                       ;; longer supports OpenPGP authentication, and (2) for
 531                       ;; some obscure reason.  Better skip it.
 532                       (setenv "XFAIL_TESTS" "utils/block-server")
 533                       #t)))))
 534     (native-inputs
 535      `(("guile" ,guile-2.0)
 536        ("gperf" ,gperf-3.0)                  ;see <https://bugs.gnu.org/32382>
 537        ("pkg-config" ,pkg-config)
 538        ("rpcsvc-proto" ,rpcsvc-proto)))           ;for 'rpcgen'
 539     (inputs
 540      `(("guile" ,guile-2.0)
 541        ("util-linux" ,util-linux)
 542        ("libtirpc" ,libtirpc)
 543        ("gnutls" ,gnutls)
 544        ("tdb" ,tdb)
 545        ("bdb" ,bdb)
 546        ("gdbm" ,gdbm)
 547        ("libgcrypt" ,libgcrypt)
 548        ("lzo" ,lzo)
 549        ("bzip2" ,bzip2)
 550        ("zlib" ,zlib)))
 551     (home-page "https://nongnu.org/libchop/")
 552     (synopsis "Tools & library for data backup and distributed storage")
 553     (description
 554      "Libchop is a set of utilities and library for data backup and
 555 distributed storage.  Its main application is @command{chop-backup}, an
 556 encrypted backup program that supports data integrity checks, versioning,
 557 distribution among several sites, selective sharing of stored data, adaptive
 558 compression, and more.  The library itself implements storage techniques such
 559 as content-addressable storage, content hash keys, Merkle trees, similarity
 560 detection, and lossless compression.")
 561     (license license:gpl3+)))
 562
 563 (define-public borg
 564   (package
 565     (name "borg")
 566     (version "1.1.13")
 567     (source
 568      (origin
 569        (method url-fetch)
 570        (uri (pypi-uri "borgbackup" version))
 571        (sha256
 572         (base32 "089q3flmwbz7dc28zlscwylf64kgck3jf1n6lqpwww8hlrk8cjhn"))
 573        (modules '((guix build utils)))
 574        (snippet
 575         '(begin
 576            ;; Delete files generated by Cython.  We used to have a regex
 577            ;; that created the list of generated files but Borg has
 578            ;; added new non-generated C files that cause the regex to
 579            ;; generate the wrong list.
 580            (for-each delete-file
 581                      '("src/borg/algorithms/checksums.c"
 582                        "src/borg/chunker.c"
 583                        "src/borg/compress.c"
 584                        "src/borg/crypto/low_level.c"
 585                        "src/borg/hashindex.c"
 586                        "src/borg/item.c"
 587                        "src/borg/platform/darwin.c"
 588                        "src/borg/platform/freebsd.c"
 589                        "src/borg/platform/linux.c"
 590                        "src/borg/platform/posix.c"))
 591            ;; Remove bundled shared libraries.
 592            (with-directory-excursion "src/borg/algorithms"
 593              (for-each delete-file-recursively
 594                        (list "blake2" "lz4" "msgpack" "zstd")))
 595            ;; Purge some msgpack references from setup.py or the resulting
 596            ;; sources will be unbuildable.
 597            (substitute* "setup.py"
 598              ((".*Extension\\('borg\\.algorithms\\.msgpack\\..*") "")
 599              (("msgpack_packer_source, msgpack_unpacker_source") ""))
 600            #t))))
 601     (build-system python-build-system)
 602     (arguments
 603      `(#:modules ((srfi srfi-26) ; for cut
 604                   (guix build utils)
 605                   (guix build python-build-system))
 606        #:phases
 607        (modify-phases %standard-phases
 608          (add-after 'unpack 'set-env
 609            (lambda* (#:key inputs #:allow-other-keys)
 610              (let ((openssl (assoc-ref inputs "openssl"))
 611                    (libb2 (assoc-ref inputs "libb2"))
 612                    (lz4 (assoc-ref inputs "lz4"))
 613                    (zstd (assoc-ref inputs "zstd")))
 614                (setenv "BORG_OPENSSL_PREFIX" openssl)
 615                (setenv "BORG_LIBB2_PREFIX" libb2)
 616                (setenv "BORG_LIBLZ4_PREFIX" lz4)
 617                (setenv "BORG_LIBZSTD_PREFIX" zstd)
 618                (setenv "PYTHON_EGG_CACHE" "/tmp")
 619                ;; The test 'test_return_codes[python]' fails when
 620                ;; HOME=/homeless-shelter.
 621                (setenv "HOME" "/tmp")
 622                #t)))
 623          (add-after 'unpack 'use-system-msgpack
 624            (lambda _
 625              (substitute* "src/borg/helpers.py"
 626                (("prefer_system_msgpack = False")
 627                 "prefer_system_msgpack = True"))
 628              #t))
 629          ;; The tests need to be run after Borg is installed.
 630          (delete 'check)
 631          (add-after 'install 'check
 632            (lambda* (#:key inputs outputs #:allow-other-keys)
 633              ;; Make the installed package available for the test suite.
 634              (add-installed-pythonpath inputs outputs)
 635              ;; The tests should be run in an empty directory.
 636              (mkdir-p "tests")
 637              (with-directory-excursion "tests"
 638                (invoke "py.test" "-v" "--pyargs" "borg.testsuite" "-k"
 639                        (string-append
 640                         ;; These tests need to write to '/var'.
 641                         "not test_get_cache_dir "
 642                         "and not test_get_config_dir "
 643                         "and not test_get_keys_dir "
 644                         "and not test_get_security_dir "
 645                         ;; These tests assume there is a root user in
 646                         ;; '/etc/passwd'.
 647                         "and not test_access_acl "
 648                         "and not test_default_acl "
 649                         "and not test_non_ascii_acl "
 650                         ;; This test needs the unpackaged pytest-benchmark.
 651                         "and not benchmark "
 652                         ;; These tests assume the kernel supports FUSE.
 653                         "and not test_fuse "
 654                         "and not test_fuse_allow_damaged_files "
 655                         "and not test_mount_hardlinks "
 656                         "and not test_readonly_mount ")))))
 657          (add-after 'install 'install-doc
 658            (lambda* (#:key inputs outputs #:allow-other-keys)
 659              (let* ((out (assoc-ref outputs "out"))
 660                     (man (string-append out "/share/man/man1"))
 661                     (misc (string-append out "/share/borg/misc")))
 662                (for-each (cut install-file <> misc)
 663                          '("docs/misc/create_chunker-params.txt"
 664                            "docs/misc/internals-picture.txt"
 665                            "docs/misc/prune-example.txt"))
 666                (copy-recursively "docs/man" man)
 667                #t))))))
 668     (native-inputs
 669      `(("python-cython" ,python-cython)
 670        ("python-setuptools-scm" ,python-setuptools-scm)
 671        ("python-pytest" ,python-pytest)))
 672     (inputs
 673      `(("acl" ,acl)
 674        ("libb2" ,libb2)
 675        ("lz4" ,lz4)
 676        ("openssl" ,openssl)
 677        ("python-llfuse" ,python-llfuse)
 678        ;; The Python msgpack library changed its name so Borg requires this
 679        ;; transitional package for now:
 680        ;; <https://bugs.gnu.org/30662>
 681        ("python-msgpack" ,python-msgpack-transitional)
 682        ("zstd" ,zstd "lib")))
 683     (synopsis "Deduplicated, encrypted, authenticated and compressed backups")
 684     (description "Borg is a deduplicating backup program.  Optionally, it
 685 supports compression and authenticated encryption.  The main goal of Borg is to
 686 provide an efficient and secure way to backup data.  The data deduplication
 687 technique used makes Borg suitable for daily backups since only changes are
 688 stored.  The authenticated encryption technique makes it suitable for backups
 689 to not fully trusted targets.  Borg is a fork of Attic.")
 690     (home-page "https://www.borgbackup.org/")
 691     (license license:bsd-3)))
 692
 693 (define-public attic
 694   (package
 695     (name "attic")
 696     (version "0.16")
 697     (source (origin
 698               (method url-fetch)
 699               (uri (pypi-uri "Attic" version))
 700               (sha256
 701                (base32
 702                 "0b5skd36r4c0915lwpkqg5hxm49gls9pprs1b7hc40910wlcsl36"))))
 703     (build-system python-build-system)
 704     (arguments
 705      `(;; The tests assume they are run as root:
 706        ;; https://github.com/jborg/attic/issues/7
 707        #:tests? #f
 708        #:phases
 709        (modify-phases %standard-phases
 710          (add-before
 711           'build 'set-openssl-prefix
 712           (lambda* (#:key inputs #:allow-other-keys)
 713             (setenv "ATTIC_OPENSSL_PREFIX" (assoc-ref inputs "openssl"))
 714             #t)))))
 715     (inputs
 716      `(("acl" ,acl)
 717        ("openssl" ,openssl)
 718        ("python-msgpack" ,python-msgpack)
 719
 720        ;; Attic is probably incompatible with llfuse > 0.41.
 721        ;; These links are to discussions of llfuse compatibility from
 722        ;; the borg project. Borg is a recent fork of attic, and attic
 723        ;; has not been updated since the fork, so it's likely that
 724        ;; llfuse compatibility requirements are still the same.
 725        ;; https://github.com/borgbackup/borg/issues/642
 726        ;; https://github.com/borgbackup/borg/issues/643
 727        ("python-llfuse" ,python-llfuse-0.41)))
 728     (synopsis "Deduplicating backup program")
 729     (description "Attic is a deduplicating backup program.  The main goal of
 730 Attic is to provide an efficient and secure way to backup data.  The data
 731 deduplication technique used makes Attic suitable for daily backups since only
 732 changes are stored.")
 733     (home-page "https://attic-backup.org/")
 734     (license license:bsd-3)
 735     (properties `((superseded . ,borg)))))
 736
 737 (define-public wimlib
 738   (package
 739     (name "wimlib")
 740     (version "1.13.2")
 741     (source (origin
 742               (method url-fetch)
 743               (uri (string-append "https://wimlib.net/downloads/"
 744                                   "wimlib-" version ".tar.gz"))
 745               (sha256
 746                (base32
 747                 "0id9ym3hzij4kpdrk0sz3ijxp5r0z1md5jch83pml9hdy1zbx5bj"))))
 748     (build-system gnu-build-system)
 749     (native-inputs
 750      `(("pkg-config" ,pkg-config)))
 751     (inputs
 752      `(("fuse" ,fuse)
 753        ("libxml2" ,libxml2)
 754        ("ntfs-3g" ,ntfs-3g)
 755        ("openssl" ,openssl)))
 756     (arguments
 757      `(#:configure-flags (list "--enable-test-support")))
 758     (home-page "https://wimlib.net/")
 759     (synopsis "WIM file manipulation library and utilities")
 760     (description "wimlib is a C library and set of command-line utilities for
 761 creating, modifying, extracting, and mounting archives in the Windows Imaging
 762 Format (@dfn{WIM files}).  It can capture and apply WIMs directly from and to
 763 NTFS volumes using @code{ntfs-3g}, preserving NTFS-specific attributes.")
 764     ;; wimlib is dual-licenced under version 3 or later of either the GPL or
 765     ;; LGPL, except those files explicitly marked as being released into the
 766     ;; public domain (CC0) in their headers.
 767     (license (list license:gpl3+
 768                    license:lgpl3+
 769                    license:cc0))))
 770
 771 (define-public dirvish
 772   (package
 773     (name "dirvish")
 774     (version "1.2.1")
 775     (build-system gnu-build-system)
 776     (source (origin
 777               (method url-fetch)
 778               (uri (string-append
 779                     "http://dirvish.org/dirvish-" version ".tgz"))
 780               (sha256
 781                (base32
 782                 "1kbxa1irszp2zw8hd5qzqnrrzb4vxfivs1vn64yxnj0lak1jjzvb"))))
 783     (arguments
 784      `(#:modules ((ice-9 match) (ice-9 rdelim)
 785                   ,@%gnu-build-system-modules)
 786        #:phases
 787        ;; This mostly mirrors the steps taken in the install.sh that ships
 788        ;; with dirvish, but simplified because we aren't prompting interactively
 789        (modify-phases %standard-phases
 790          (delete 'configure)
 791          (delete 'build)
 792          (delete 'check)
 793          (replace 'install
 794            (lambda* (#:key inputs outputs #:allow-other-keys)
 795              ;; These are mostly the same steps the install.sh that comes with
 796              ;; dirvish does
 797              (let* (;; Files we'll be copying
 798                     (executables
 799                      '("dirvish" "dirvish-runall"
 800                        "dirvish-expire" "dirvish-locate"))
 801                     (man-pages
 802                      '(("dirvish" "8") ("dirvish-runall" "8")
 803                        ("dirvish-expire" "8") ("dirvish-locate" "8")
 804                        ("dirvish.conf" "5")))
 805
 806                     (output-dir
 807                      (assoc-ref outputs "out"))
 808
 809                     ;; Just a default... not so useful on guixsd though
 810                     ;; You probably want to a service with file(s) to point to.
 811                     (confdir "/etc/dirvish")
 812
 813                     (perl (string-append (assoc-ref %build-inputs "perl")
 814                                          "/bin/perl"))
 815                     (loadconfig.pl (call-with-input-file "loadconfig.pl"
 816                                      read-string)))
 817
 818
 819                (define (write-pl filename)
 820                  (define pl-header
 821                    (string-append "#!" perl "\n\n"
 822                                   "$CONFDIR = \"" confdir "\";\n\n"))
 823                  (define input-file-location
 824                    (string-append filename ".pl"))
 825                  (define target-file-location
 826                    (string-append output-dir "/bin/" filename ".pl"))
 827                  (define text-to-write
 828                    (string-append pl-header
 829                                   (call-with-input-file input-file-location
 830                                     read-string)
 831                                   "\n" loadconfig.pl))
 832                  (with-output-to-file target-file-location
 833                    (lambda ()
 834                      (display text-to-write)))
 835                  (chmod target-file-location #o755)
 836                  (wrap-program target-file-location
 837                    `("PERL5LIB" ":" prefix
 838                      ,(map (lambda (l) (string-append (assoc-ref %build-inputs l)
 839                                                       "/lib/perl5/site_perl"))
 840                            '("perl-libtime-period"
 841                              "perl-libtime-parsedate")))))
 842
 843                (define write-man
 844                  (match-lambda
 845                    ((file-base man-num)
 846                     (let* ((filename
 847                             (string-append file-base "." man-num))
 848                            (output-path
 849                             (string-append output-dir
 850                                            "/share/man/man" man-num
 851                                            "/" filename)))
 852                       (copy-file filename output-path)))))
 853
 854                ;; Make directories
 855                (mkdir-p (string-append output-dir "/bin/"))
 856                (mkdir-p (string-append output-dir "/share/man/man8/"))
 857                (mkdir-p (string-append output-dir "/share/man/man5/"))
 858
 859                ;; Write out executables
 860                (for-each write-pl executables)
 861                ;; Write out man pages
 862                (for-each write-man man-pages)
 863                #t))))))
 864     (inputs
 865      `(("perl" ,perl)
 866        ("rsync" ,rsync)
 867        ("perl-libtime-period" ,perl-libtime-period)
 868        ("perl-libtime-parsedate" ,perl-libtime-parsedate)))
 869     (home-page "http://dirvish.org/")
 870     (synopsis "Fast, disk based, rotating network backup system")
 871     (description
 872      "With dirvish you can maintain a set of complete images of your
 873 file systems with unattended creation and expiration.  A dirvish backup vault
 874 is like a time machine for your data. ")
 875     (license (license:fsf-free "file://COPYING"
 876                                "Open Software License 2.0"))))
 877
 878 (define-public restic
 879   (package
 880     (name "restic")
 881     (version "0.9.6")
 882     ;; TODO Try packaging the bundled / vendored dependencies in the 'vendor/'
 883     ;; directory.
 884     (source (origin
 885               (method url-fetch)
 886               (uri (string-append
 887                     "https://github.com/restic/restic/releases/download/"
 888                     "v" version "/restic-" version ".tar.gz"))
 889               (file-name (string-append name "-" version ".tar.gz"))
 890               (sha256
 891                (base32
 892                 "1zmh42aah32ah8w5n6ilz9bci0y2xrf8p7qshy3yf1lzm5gnbj0w"))))
 893     (build-system go-build-system)
 894     (arguments
 895      `(#:import-path "github.com/restic/restic"
 896       ;; We don't need to install the source code for end-user applications.
 897        #:install-source? #f
 898        #:phases
 899        (modify-phases %standard-phases
 900          (replace 'build
 901            (lambda* (#:key inputs #:allow-other-keys)
 902              (with-directory-excursion "src/github.com/restic/restic"
 903                ;; Disable 'restic self-update'.  It makes little sense in Guix.
 904                (substitute* "build.go" (("selfupdate") ""))
 905                (setenv "HOME" (getcwd)) ; for $HOME/.cache/go-build
 906                (invoke "go" "run" "build.go"))))
 907
 908          (replace 'check
 909            (lambda _
 910              (with-directory-excursion "src/github.com/restic/restic"
 911                ;; Disable FUSE tests.
 912                (setenv "RESTIC_TEST_FUSE" "0")
 913                (invoke "go" "run" "build.go" "--test"))))
 914
 915          (replace 'install
 916            (lambda* (#:key outputs #:allow-other-keys)
 917              (let ((out (assoc-ref outputs "out"))
 918                    (src "src/github.com/restic/restic"))
 919                (install-file (string-append src "/restic")
 920                              (string-append out "/bin"))
 921                #t)))
 922
 923          (add-after 'install 'install-docs
 924            (lambda* (#:key outputs #:allow-other-keys)
 925              (let* ((out (assoc-ref outputs "out"))
 926                     (man "/share/man")
 927                     (man-section (string-append man "/man"))
 928                     (src "src/github.com/restic/restic/doc/man/"))
 929                ;; Install all the man pages to "out".
 930                (for-each
 931                  (lambda (file)
 932                    (install-file file
 933                                  (string-append out man-section
 934                                                 (string-take-right file 1))))
 935                  (find-files src "\\.[1-9]"))
 936                #t)))
 937
 938          (add-after 'install-docs 'install-shell-completion
 939            (lambda* (#:key outputs #:allow-other-keys)
 940              (let* ((out (assoc-ref outputs "out"))
 941                     (bin (string-append out "/bin"))
 942                     (etc (string-append out "/etc"))
 943                     (share (string-append out "/share")))
 944                (for-each
 945                 (lambda (shell)
 946                   (let* ((shell-name (symbol->string shell))
 947                          (dir (string-append "etc/completion/" shell-name)))
 948                     (mkdir-p dir)
 949                     (invoke (string-append bin "/restic") "generate"
 950                             (string-append "--" shell-name "-completion")
 951                             (string-append dir "/"
 952                                            (case shell
 953                                              ((bash) "restic")
 954                                              ((zsh) "_restic"))))))
 955                 '(bash zsh))
 956                (with-directory-excursion "etc/completion"
 957                  (install-file "bash/restic"
 958                                (string-append etc "/bash_completion.d"))
 959                  (install-file "zsh/_restic"
 960                                (string-append share "/zsh/site-functions")))
 961                #t))))))
 962     (home-page "https://restic.net/")
 963     (synopsis "Backup program with multiple revisions, encryption and more")
 964     (description "Restic is a program that does backups right and was designed
 965 with the following principles in mind:
 966
 967 @itemize
 968 @item Easy: Doing backups should be a frictionless process, otherwise you
 969 might be tempted to skip it.  Restic should be easy to configure and use, so
 970 that, in the event of a data loss, you can just restore it.  Likewise,
 971 restoring data should not be complicated.
 972
 973 @item Fast: Backing up your data with restic should only be limited by your
 974 network or hard disk bandwidth so that you can backup your files every day.
 975 Nobody does backups if it takes too much time.  Restoring backups should only
 976 transfer data that is needed for the files that are to be restored, so that
 977 this process is also fast.
 978
 979 @item Verifiable: Much more important than backup is restore, so restic
 980 enables you to easily verify that all data can be restored.  @item Secure:
 981 Restic uses cryptography to guarantee confidentiality and integrity of your
 982 data.  The location the backup data is stored is assumed not to be a trusted
 983 environment (e.g.  a shared space where others like system administrators are
 984 able to access your backups).  Restic is built to secure your data against
 985 such attackers.
 986
 987 @item Efficient: With the growth of data, additional snapshots should only
 988 take the storage of the actual increment.  Even more, duplicate data should be
 989 de-duplicated before it is actually written to the storage back end to save
 990 precious backup space.
 991 @end itemize")
 992     (license license:bsd-2)))
 993
 994 (define-public zbackup
 995   (package
 996     (name "zbackup")
 997     (version "1.4.4")
 998     (source
 999      (origin
1000        (method git-fetch)
1001        (uri (git-reference
1002              (url "https://github.com/zbackup/zbackup")
1003              (commit version)))
1004        (file-name (git-file-name name version))
1005        (sha256
1006         (base32 "14l1kyxg7pccpax3d6qcpmdycb70kn3fxp1a59w64hqy2493hngl"))))
1007     (build-system cmake-build-system)
1008     (arguments
1009      `(#:tests? #f))                    ;no test
1010     (inputs
1011      `(("lzo" ,lzo)
1012        ("libressl" ,libressl)
1013        ("protobuf" ,protobuf)
1014        ("xz" ,xz)
1015        ("zlib" ,zlib)))
1016     (home-page "http://zbackup.org")
1017     (synopsis "Versatile deduplicating backup tool")
1018     (description
1019      "ZBackup is a globally-deduplicating backup tool, based on the
1020 ideas found in Rsync.  Feed a large @file{.tar} into it, and it will
1021 store duplicate regions of it only once, then compress and optionally
1022 encrypt the result.  Feed another @file{.tar} file, and it will also
1023 re-use any data found in any previous backups.  This way only new
1024 changes are stored, and as long as the files are not very different,
1025 the amount of storage required is very low.  Any of the backup files
1026 stored previously can be read back in full at any time.  The program
1027 is format-agnostic, so you can feed virtually any files to it.")
1028     (license license:gpl2+)))
1029
1030 (define-public dump
1031   (package
1032     (name "dump")
1033     (version "0.4b46")
1034     (source
1035      (origin
1036        (method url-fetch)
1037        (uri (string-append "mirror://sourceforge/dump/dump/"
1038                            version "/dump-" version ".tar.gz"))
1039        (sha256
1040         (base32
1041          "15rg5y15ak0ppqlhcih78layvg7cwp6hc16p3c58xs8svlkxjqc0"))))
1042     (build-system gnu-build-system)
1043     (arguments
1044      `(#:configure-flags
1045        `("--sysconfdir=/etc"
1046          "--disable-readline"
1047          "--disable-rmt")))
1048     (native-inputs
1049      `(("pkg-config" ,pkg-config)))
1050     (inputs
1051      `(("openssl" ,openssl-1.0)
1052        ("zlib" ,zlib)
1053        ("util-linux" ,util-linux "lib")
1054        ("e2fsprogs" ,e2fsprogs)))
1055     (home-page "https://dump.sourceforge.io/")
1056     (synopsis "Ext2/3/4 file system dump/restore utilities")
1057     (description "Dump examines files in a file system, determines which ones
1058 need to be backed up, and copies those files to a specified disk, tape or
1059 other storage medium.  Subsequent incremental backups can then be layered on
1060 top of the full backup.  The restore command performs the inverse function of
1061 dump; it can restore a full backup of a file system.  Single files and
1062 directory subtrees may also be restored from full or partial backups in
1063 interractive mode.")
1064     (license license:bsd-3)))
1065
1066 (define-public burp
1067   (package
1068     (name "burp")
1069     (version "2.3.28")
1070     (source (origin
1071               (method url-fetch)
1072               (uri (string-append "mirror://sourceforge/burp/burp-" version
1073                                   "/burp-" version ".tar.bz2"))
1074               (sha256
1075                (base32
1076                 "18f8cjsb87skabvz4cl5pdln35qmim7x686js1xzpld6wyl9kv2k"))))
1077     (build-system gnu-build-system)
1078     (arguments
1079      `(#:phases
1080        (modify-phases %standard-phases
1081          (add-before 'check 'extend-test-time-outs
1082            ;; The defaults are far too low for busy boxes & spinning storage.
1083            (lambda _
1084              (substitute* (find-files "utest" "\\.c$")
1085                (("(tcase_set_timeout\\(tc_core,)[ 0-9]*(\\);.*)$" _ prefix suffix)
1086                 (string-append prefix " 3600" suffix "\n")))
1087              #t)))))
1088     (inputs
1089      `(("librsync" ,librsync)
1090        ("openssl" ,openssl)
1091        ("uthash" ,uthash)
1092        ("zlib" ,zlib)))
1093     (native-inputs
1094      `(("check" ,check)
1095        ("pkg-config" ,pkg-config)))
1096     (home-page "https://burp.grke.org")
1097     (synopsis "Differential backup and restore")
1098     (description "Burp is a network backup and restore program.  It attempts
1099 to reduce network traffic and the amount of space that is used by each
1100 backup.")
1101     (license license:agpl3)))