Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/bin/build-packages
blob: 6b4e6d613ed0d92c09b2ed16e217a6086270d784 (plain)
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
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
#!/bin/sh

# build packages one by one, then upload the binary package to the repository server

# shellcheck disable=SC2119,SC2120

# shellcheck source=../lib/load-configuration
. "${0%/*}/../lib/load-configuration"

# TODO: report back memory and hdd stats to the build master on successful build

# TODO: some build failures should skip straws - e.g. if dependencies are unavailable,
# we should not try to rebuild with a cleaned chroot

# TODO: some build environments should be archived when the build fails - but:
# which/how?

# TODO: it might be worth trying to build with makedepends installed from
# [testing] and only depends installed from [staging]

# TODO: the following things need proper locking and/or proper handling of
# external locks:
# - `git` on the package source
# - `archbuild` (e.g. /var/lib/archbuilds/staging-i686-build/root.lock)
# - `find ... -exec umount` on the build chroot

# TODO: releave some locking conditions - meta goal: be able to run multiple
# build slaves on one host from within one archlinux32/builder repository

# TODO: remove hard-coded package suffixes

# TODO: save build-logs in case of success, too - only the build is
# guaranteed to have been successful, maybe the package is broken.

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'build-packages: build package(s) on the build-list'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -d|--diff source-directory:'
  >&2 echo '               Apply the diff between $source-directory/PKGBUILD and'
  >&2 echo '               $source-directory/../../trunk/PKGBUILD before building.'
  >&2 echo '               This option is intended for building from trunk where minor'
  >&2 echo '               fixes did not get released yet. Hence, it conflicts intentionally'
  >&2 echo '               with -n, -l, -t or -x and it requires -p.'
  >&2 echo '  -h|--help:   Show this help and exit.'
  >&2 echo '  -l|--local pkgname.git-revision.git-mod-revision.repository.architecture:'
  >&2 echo '               Build the given package without asking / reporting to the'
  >&2 echo '               build master. Cannot be combined with -n, -p, -t or -x.'
  >&2 echo '             where:'
  >&2 echo '               - git-revision: packages-HEAD or community-HEAD or a valid commit'
  >&2 echo '               - git-mod-revision: work-tree or a valid commit'
  >&2 echo '             example:'
  >&2 echo '               build-package -l   which.packages-HEAD.work-tree.core.i686'
  >&2 echo '  -n count:    Build $count packages (if available), then exit.'
  >&2 echo '               $count=0 is interpreted as infinity.'
  >&2 echo '               The default is $count=1 or 0 iff -t or -x is given.'
  >&2 echo '               Cannot be combined with -l.'
  >&2 echo '  -p|--prefer pkgname:'
  >&2 echo '               Ask the build master to get an assignment for the given'
  >&2 echo '               package but built what is offered anyway. Cannot be combined'
  >&2 echo '               with -l.'
  >&2 echo '  -s|--straw $straw:'
  >&2 echo '               Use this straw instead of the preconfigured ones. -- May be'
  >&2 echo '               given multiple times to allow using multiple straws.'
  >&2 echo '  -t seconds:  Do not request new assignment(s) $seconds seconds after start.'
  >&2 echo '               Cannot be combined with -l.'
  >&2 echo '  -x:          If package build fails, do not request new assignment(s).'
  >&2 echo '               Cannot be combined with -l.'
  >&2 echo ''
  >&2 echo 'known straws (separated by and enclosed in ":", sets of straws separated by " "):'
  >&2 echo '  :clean_chroot:'
  >&2 echo '    clean the chroot before building'
  >&2 echo '  :haskell_without_check:'
  >&2 echo '    try with :without_check: iff this is a haskell-*, python-* or python2-* package'
  >&2 echo '  :mirrored_source:'
  >&2 echo '    compile from source tarbal from sources.archlinux.org if possible'
  >&2 echo '  :mirrored_source_by_hash:'
  >&2 echo '    download sources from sources.archlinux32.org by hash if possible'
  >&2 echo '  :without_check:'
  >&2 echo '    run makepkg with "--no-check"'
  >&2 echo '  :without_systemd_nspawn:'
  >&2 echo '    do not invoke archbuild'"'"'s systemd-nspawn fanciness [RISKY]'
  >&2 echo '  :with_build_support:'
  >&2 echo '    allow using [build-support]'
  >&2 echo '  :with_/dev/fuse:'
  >&2 echo '    mount /dev/fuse into the chroot'
  [ -z "$1" ] && exit 1 || exit "$1"
}

eval set -- "$(
  getopt -o d:hl:n:p:s:t:ux \
    --long diff: \
    --long help \
    --long local: \
    --long prefer: \
    --long straw: \
    --long upload \
    -n "$(basename "$0")" -- "$@" || \
  echo usage
)"

unset count
unset diff_source_dir
unset forced_package
unset forced_straws
unset prefered_package
exit_after_failure=false
timeout=0

while true
do
  case "$1" in
    -d|--diff)
      shift
      if [ -n "${diff_source_dir}" ]; then
        >&2 echo 'Option -d, --diff can be given only once.'
        usage
      fi
      diff_source_dir="$1"
    ;;
    -h|--help)
      usage 0
    ;;
    -l|--local)
      shift
      if [ -n "${forced_package}" ]; then
        >&2 echo 'Option -l, --local can be given only once.'
        usage
      fi
      forced_package="$1"
    ;;
    -n)
      shift
      count="$1"
      [ "${count}" -eq 0 ] && \
        count=-1
    ;;
    -p|--prefer)
      shift
      if [ -n "${prefered_package}" ]; then
        >&2 echo 'Option -p, --prefer can be given only once.'
        usage
      fi
      prefered_package="$1"
    ;;
    -s|--straw)
      shift
      forced_straws="${forced_straws} $1"
    ;;
    -t)
      shift
      timeout="$1"
    ;;
    -x)
      exit_after_failure=true
    ;;
    --)
      shift
      break
    ;;
    *)
      >&2 echo 'Whoops, forgot to implement option "'"$1"'" internally.'
      exit 42
    ;;
  esac
  shift
done

if [ $# -ne 0 ]; then
  >&2 echo 'Too many arguments.'
  usage
fi

if [ -n "${diff_source_dir}" ]; then
  if [ -n "${count}" ] || \
    [ -n "${forced_package}" ] || \
    [ "${timeout}" -ne 0 ] || \
    ${exit_after_failure} || \
    [ -z "${prefered_package}" ]; then
    >&2 echo 'Conflicting flags.'
    usage
  fi
fi

if [ -n "${forced_package}" ]; then
  if [ -n "${count}" ] || \
    [ "${timeout}" -ne 0 ] || \
    [ -n "${prefered_package}" ] || \
    ${exit_after_failure}; then
    >&2 echo 'Conflicting flags.'
    usage
  fi
  upload_to_build_master=false
else
  upload_to_build_master=true
fi

if [ -z "${count}" ]; then
  if [ "${timeout}" -ne 0 ] || ${exit_after_failure}; then
    count=-1
  else
    count=1
  fi
fi

if [ -n "${forced_straws}" ]; then
  straws_that_might_repair_failing_builds="${forced_straws# }"
fi

if [ "${timeout}" -ne 0 ]; then
  timeout=$((timeout+$(date +%s)))
fi

checksum=$(
  calculate_script_checksum
)

# When this script or a script in lib/ got updated, we do not request
# any new assignments. This script should rather exit and be restarted.
while [ "${count}" -ne 0 ] && \
  [ "$(calculate_script_checksum)" = "${checksum}" ]; do

  if [ "${timeout}" -ne 0 ] && [ "${timeout}" -lt "$(date +%s)" ];
  then
    break
  fi

  err=0
  case "$(uname -m)" in
    'i486')
      my_arch='i486'
    ;;
    'i686'|'x86_64')
      if grep '^flags\s*:' '/proc/cpuinfo' | \
        grep -qwF 'sse2'; then
        my_arch='pentium4'
      else
        my_arch='i686'
      fi
    ;;
    *)
      >&2 printf 'Sorry, architecture %s does not work (yet) as a build slave.\n' \
        "$(uname -m)"
      exit 2
    ;;
  esac
  if [ -z "${forced_package}" ]; then
    package=$(
      # shellcheck disable=SC2029
      ssh \
        -i "${master_build_server_identity}" \
        -p "${master_build_server_port}" \
        "${master_build_server_user}@${master_build_server}" \
        'get-assignment' "${my_arch}" "${prefered_package}"
    ) || err=$?
    expected_packages=$(
      printf '%s\n' "${package}" | \
        sed '1d'
    )
    package=$(
      printf '%s\n' "${package}" | \
        sed -n '1p'
    )
  else
    package=$(
      echo "${forced_package}" | \
        sed '
          s|\.\([^.]\+\)\.\([^.]\+\)\.\([^.]\+\)\.\([^.]\+\)$| \1 \2 \3 0 \4|
        '
    )
    expected_packages=''
  fi

  case ${err} in

    #  0: ok, I gave you an assignment
    0)
      [ ${count} -gt 0 ] && \
        count=$((count-1))
      arch="${package##* }"
      package="${package% *}"
      sub_pkgrel="${package##* }"
      package="${package% *}"
      repository="${package##* }"
      package="${package% *}"
      mod_git_revision="${package##* }"
      package="${package% *}"
      git_revision="${package##* }"
      package="${package% *}"
      if [ "${arch}" = 'any' ]; then
        arch="${my_arch}"
      fi

      if [ -n "${diff_source_dir}" ] &&
        [ "${prefered_package}" != "${package}" ]; then
        >&2 echo 'The prefered package was not handed out.'
        >&2 echo 'Because -d was given, I will abort.'
        # shellcheck disable=SC2029
        ssh \
          -i "${master_build_server_identity}" \
          -p "${master_build_server_port}" \
          "${master_build_server_user}@${master_build_server}" \
          'return-assignment' 'ABORT'
        exit 2
      fi

      if [ "${git_revision##*-}" = 'HEAD' ]; then
        git_revision=$(
          repo_name="${git_revision%-*}"
          eval repo_path='"${repo_paths__'"${repo_name}"'}"'
          if [ -z "${repo_path}" ]; then
            >&2 printf 'Unknown git repository "%s".\n' "${repo_name}"
            exit 2
          fi
          git -C "${repo_path}" rev-parse HEAD
        )
      fi

      if [ "${mod_git_revision}" = 'work-tree' ]; then
        mod_git_revision=$(
          # we can't just create an empty index-file with mktemp, because git doesn't like it
          find . \
            -mindepth 1 \
            -maxdepth 1 \
            -name 'tmp.build-packages.git.*' \
            -exec rm -rf --one-file-system {} \;
          tmp_subdir=$(mktemp -d 'tmp.build-packages.git.XXXXXXXXXX' --tmpdir)
          trap 'rm -rf --one-file-system "${tmp_subdir}"' EXIT
          export GIT_INDEX_FILE="${tmp_subdir}/index.new"
          git -C "${repo_paths__archlinux32}" add -A
          git -C "${repo_paths__archlinux32}" write-tree
        )
      fi

      # Update git repositories (official packages, community packages and the repository of package customizations).

      for repo_name in ${repo_names}; do
        eval repo_path='"${repo_paths__'"${repo_name}"'}"'
        if [ -d "${repo_path}/.git" ]; then
          git -C "${repo_path}" remote update
        else
          git -C "${repo_path}" fetch origin master:master
        fi || \
          true
      done

      # trigger update of mirror (if configured)
      if [ -n "${mirror_update_command}" ]; then
        ${mirror_update_command}
      fi

      bail_out() {
        err=$?
        if [ -n "$1" ]; then
          err="$1"
        fi
        cd "${base_dir}"
        recursively_umount_and_rm "${tmp_dir}"
        if [ -z "${forced_package}" ]; then
          flock -u 9 || true
        fi
        exit "${err}"
      }
      find "${work_dir}" \
        -mindepth 1 \
        -maxdepth 1 \
        -name 'tmp.build-packages.??????' \
        -printf '%p\n' | \
        while read -r old_tmp_dir; do
          find "${old_tmp_dir}" -xdev -not -type l -exec chmod 777 {} \;
          rm -rf --one-file-system "${old_tmp_dir}"
        done
      tmp_dir=$(mktemp -d "${work_dir}/tmp.build-packages.XXXXXX")
      trap bail_out EXIT

      if ! git_repo=$(find_repository_with_commit "${git_revision}") || \
        [ -z "${git_repo}" ] || \
        ! find_pkgbuilds "${package}" "${repository}" "${git_repo}" "${git_revision}" "${mod_git_revision}" || \
        ! extract_source_directory "${git_repo}" "${git_revision}" "${mod_git_revision}" "${tmp_dir}" "${sub_pkgrel}" || \
        ! apply_trunk_patch "${tmp_dir}" "${diff_source_dir}"; then
        # report local failure (probably a missing commit) to build-master
        # shellcheck disable=SC2029
        ssh \
          -i "${master_build_server_identity}" \
          -p "${master_build_server_port}" \
          "${master_build_server_user}@${master_build_server}" \
          'return-assignment' 'ABORT'

        recursively_umount_and_rm "${tmp_dir}"
        trap - EXIT
        continue
      fi

      cd "${tmp_dir}"
      echo 'nothing' > "${tmp_dir}/.ping-build-master"
      if [ -z "${forced_package}" ]; then
        # we get a lock on "${work_dir}/ping-build-master.lock",
        # if we release that lock, ping-to-master should stop _immediately_
        exec 9> "${work_dir}/ping-build-master.lock"
        if ! verbose_flock -n 9; then
          >&2 echo 'ERROR: Cannot lock ping-to-master - this should not happen.'
          exit 2
        fi
        "${base_dir}/bin/ping-to-master" "$$" "${tmp_dir}" &
      fi
      success=false

      if printf '%s\n' "${package}" | \
        grep -q '^\(haskell\|python2\?\)-'; then
        straws_that_might_repair_failing_builds=$(
          # shellcheck disable=SC2086
          printf '%s\n' ${straws_that_might_repair_failing_builds} | \
            sed '
              s/^\(.*\):haskell_without_check:\(.*\)$/\1:\2\n\1:without_check:\2/
            '
        )
      fi

      for straw in ${straws_that_might_repair_failing_builds}; do

        if ${success}; then
          break
        fi

        echo 'preparing' > "${tmp_dir}/.ping-build-master"

        outerParameters="-r ${archbuild_chroots}"
        if echo "${straw}" | \
          grep -qF ':clean_chroot:'; then
          outerParameters="-c ${outerParameters}"
        fi

        innerParameters='--nocolor'
        if echo "${straw}" | \
          grep -qF ':without_check:'; then
          innerParameters="${innerParameters} --nocheck"
        fi

        if echo "${straw}" | \
          grep -qF ':with_/dev/fuse:'; then
          middleParameters='-d /dev/fuse'
        else
          middleParameters=''
        fi

        if echo "${straw}" | \
          grep -qF ':with_build_support:'; then
          build_command='staging-with-build-support-'"${arch}"'-build'
        elif echo "${straw}" | \
          grep -qF ':without_systemd_nspawn:'; then
          if [ -z "${prefered_package}" ]; then
            >&2 echo 'straw :without_systemd_nspawn: only allowed with -p'
            exit 2
          fi
          if [ "${prefered_package}" != "${package}" ]; then
            >&2 echo 'The prefered package was not handed out.'
            >&2 echo 'Because straw :without_systemd_nspawn: is active, I will abort.'
            # shellcheck disable=SC2029
            ssh \
              -i "${master_build_server_identity}" \
              -p "${master_build_server_port}" \
              "${master_build_server_user}@${master_build_server}" \
              'return-assignment' 'ABORT'
            exit 2
          fi
          # we're not interested in what this cpu /can/ do, but what
          # architecture the installed packages actually are
          if ! pacman -Qi pacman | \
            sed 's/^Architecture\s*:\s*//;t;d' | \
            grep -qxF "${arch}"; then
            >&2 echo 'straw :without_systemd_nspawn: requires running build-packages on the'
            >&2 echo 'architecture for which the package should be built.'
            >&2 printf '"%s" != "%s"\n' \
              "$(
                pacman -Qi pacman | \
                  sed 's/^Architecture\s*:\s*//;t;d'
              )" \
              "${arch}"
            exit 2
          fi
          build_command='makepkg'
          outerParameters="${innerParameters} -fcrs --asdeps --noconfirm --holdver"
          middleParameters=''
          innerParameters=''
        else
          build_command='staging-'"${arch}"'-build'
        fi

        find . -maxdepth 1 -type f \( \
          -name '*.pkg.tar.xz' \
          -o -name '*.pkg.tar.xz.sig' \
          -o -name '*.pkg.tar.zst' \
          -o -name '*.pkg.tar.zst.sig' \
        \) \
          -exec rm {} \;

        echo 'checking-source' > "${tmp_dir}/.ping-build-master"
        success=false
        verifysource_trial=0
        while [ ${verifysource_trial} -lt 5 ]; do
          verifysource_trial=$((verifysource_trial + 1))
          log_file="${tmp_dir}/$(
              date -u --iso-8601=seconds | \
                cut -d+ -f1
            ).build-log"
          if CARCH="${arch}" makepkg --verifysource 2> "${log_file}"; then
            success=true
            rm "${log_file}"
            break
          fi

          # receive specific missing keys
          if [ ${verifysource_trial} -eq 1 ]; then
            missing_keys=$(
              sed -n '
                s/^.* FAILED (unknown public key \([0-9A-F]\{16\}\)).*$/0x\1/
                T
                p
              ' "${log_file}"
            )
            if [ -n "${missing_keys}" ]; then
              if printf '%s\n' "${missing_keys}" \
                | sed '
                  s@^@https://archlinux32.org/keys.php?k=@
                ' \
                | xargs curl -Ss \
                | gpg --import; then
                continue
              fi
              if gpg --recv-keys "${missing_keys}"; then
                continue
              fi
            fi
            verifysource_trial=$((verifysource_trial + 1))
          fi

          # download the repository key from github
          if [ ${verifysource_trial} -eq 2 ]; then
            if grep -q ' FAILED (unknown public key \([0-9A-F]\{16\}\))' -- "${log_file}"; then
              # TODO: get the name of the key file from its finger print or
              # some other information inside the repository
              if makepkg --printsrcinfo | \
                  sed -n '
                    s,^\ssource = git+\(https://github\.com/[^/[:space:]]\+\)/[^/]*$,\1.gpg,
                    T
                    p
                  ' | \
                  xargs -rn1 curl -s | \
                  gpg --import; then
                continue
              fi
            fi
            verifysource_trial=$((verifysource_trial + 1))
          fi

          # try to download source from sources.archlinux.org/sources/$repo/$source
          if [ ${verifysource_trial} -eq 3 ]; then
            if echo "${straw}" | \
              grep -qF ':mirrored_source:'; then
              source_name=$(
                makepkg --printsrcinfo | \
                  sed -n '
                    /^\s*\(epoch\|pkg\(base\|ver\|rel\)\) = /{s|^\s\+||;p}
                    /^pkgname = /q
                  ' | \
                  sed '
                    s|^pkgbase = \(.*\)$|0 \1-|
                    s|^epoch = \(.*\)$|1 \1:|
                    s|^pkgver = \(.*\)$|2 \1-|
                    s|^pkgrel = \([^.]*\)\(\..*\)\?$|3 \1.src.tar.gz|
                  ' | \
                  sort -k1n,1 | \
                  sed '
                    s|^[0-9] ||
                    :a
                      N
                      s|\n[0-9] \(\S\+\)$|\1|
                    ta
                  '
              )
              if wget -q --timeout=15 -nc -nd "https://sources.archlinux.org/sources/${git_repo}/${source_name}"; then
                # shellcheck disable=SC2046
                tar -zst --overwrite \
                  -f "${source_name}" \
                  --exclude PKGBUILD \
                  $(
                    if [ -n "${PKGBUILD_mod}" ]; then
                      git -C "${repo_paths__archlinux32}/${PKGBUILD_mod%/*}" archive "${mod_git_revision}" -- . | \
                        tar -t | \
                        sed 's/^/--exclude /'
                    fi
                  ) \
                  --strip-components=1 \
                  || true
                continue
              fi
            fi
            verifysource_trial=$((verifysource_trial + 1))
          fi

          # try to download source from sources.archlinux32.org by its hash
          if [ ${verifysource_trial} -eq 4 ]; then
            if echo "${straw}" | \
              grep -qF ':mirrored_source_by_hash:'; then
              if download_sources_by_hash; then
                continue
              fi
            fi
            verifysource_trial=$((verifysource_trial + 1))
          fi
        done

        if ${success}; then
          echo 'building' > "${tmp_dir}/.ping-build-master"
          >&2 printf '%s: building package "%s" (revisions %s %s, repository %s, straw %s) for %s ...' \
            "$(date +'%Y-%m-%d %T')" \
            "${package}" \
            "${git_revision}" \
            "${mod_git_revision}" \
            "${repository}" \
            "${straw}" \
            "${arch}"
          log_file="${tmp_dir}/$(
            date -u --iso-8601=seconds | \
              cut -d+ -f1
          ).build-log"
          # by piping the log, we don't see anything in the terminal,
          # but all ways to duplicate the logs seem pretty elaborate
          # shellcheck disable=SC2024,SC2086
          if ! "${build_command}" ${outerParameters} -- ${middleParameters} -- ${innerParameters} > \
            "${log_file}" 2>&1; then
            success=false
            build_dir="/var/lib/archbuild/${build_command%-build}/$(whoami)"
            if [ -d "${build_dir}" ]; then
              sed '
                s/^Full log written to\s\+\(\S\+\)\s*$/\1/
                t
                /# An error report file with more information is saved as:/ {
                  N
                  s/^.*\n#\s\+//
                  t
                  d
                }
                s/^See also "\(\S\+\)"\.\s*$/\1/
                t
                s/^See \(\S\+\)\s*$/\1/
                t
                d
              ' "${log_file}" | \
                while read -r extra_log_file; do
                  grep -HF '' "${build_dir}/${extra_log_file}" || true
                done | \
                sponge -a "${log_file}"
            fi
            printf 'used straw: %s\n' "${straw}" >> "${log_file}"
          fi
        fi

        if ${success}; then
          # build successful
          >&2 printf ' ok.\n'
          if [ "${build_command}" = 'makepkg' ]; then
            find . -maxdepth 1 -type f -name '*.pkg.tar.zst' \
              -exec sh -c 'namcap "$1" > "$1-namcap.log"' '_' '{}' \;
          fi
          tar_content_dir=$(mktemp -d "${tmp_dir}/tar-content.XXXXXX")
          echo 'post-build' > "${tmp_dir}/.ping-build-master"
          # remove unexpected packages
          if [ -n "${expected_packages}" ]; then
            {
              find . -maxdepth 1 -type f -name '*.pkg.tar.zst' -printf '%f\n'
              printf '%s\n' "${expected_packages}" | \
                sed 'p'
            } | \
              sort | \
              uniq -u | \
              while read -r unexpected_package; do
                >&2 printf 'removing unexpected build artifact "%s"\n' \
                  "${unexpected_package}"
                rm "${unexpected_package}"*
              done
          fi
          >&2 printf 'signing package(s)\n'
          find . -maxdepth 1 -type f -name '*.pkg.tar.zst' \
            -execdir gpg --local-user="${package_key}" --detach-sign '{}' \; \
            -execdir mv '{}' '{}.sig' '{}-namcap.log' "${tar_content_dir}/" \; \
            -printf '%f\n' | \
            sponge | \
            while read -r pkg_file; do
              {
                pacman -Spdd --print-format '%l' --noconfirm "${pkg_file%-*-*-*}" 2>/dev/null | \
                  sed '
                    s|/[^/]\+\.pkg\.tar\.zst$||
                  '
                # shellcheck disable=SC2016
                curl -Ss 'https://www.archlinux.org/mirrorlist/?country=all&protocol=https&tier=1&use_mirror_status=on' | \
                  sed -n '
                    s/^#Server = //
                    T
                    s/\$repo/'"${repository}"'/g
                    s/\$arch/x86_64/g
                    p
                  '
              } | \
                sed '
                  s|$|/'"${pkg_file}"'|
                  s/\.[0-9]\+\(-[^-]\+\)$/\1/
                  s/-'"${arch}"'\+\(\.pkg\.tar\.zst\)$/-x86_64\1/
                  p
                  s/\.zst/.xz/
                ' | \
                shuf -n 100 | \
                while read -r url; do
                  >&2 printf 'downloading "%s" ...' "${url}"
                  if wget -q --timeout=15 -nd "${url}"; then
                    >&2 printf ' ok.\n'
                    break;
                  fi
                  >&2 printf ' failed. Next ...\n'
                done
            done
          >&2 printf 'searching for provided libraries\n'
          find "${tar_content_dir}" -maxdepth 1 \
            -name '*.pkg.tar.zst' \
            -printf '%p\n' | \
            while read -r pkgfile; do
              pacman -Qqlp "${pkgfile}" | \
                sed -n '
                  s,^.*/,,
                  /\.so\(\..\+\)\?$/ {
                    :a
                      p
                      s/\(\.so\(\..\+\)\?\)\.[^.]\+$/\1/
                      t a
                  }
                ' | \
                sort -u > \
                "${pkgfile}.so.provides"
            done
          >&2 printf 'searching for required and more provided libraries\n'
          package_content_dir=$(mktemp -d "${tmp_dir}/package-content.XXXXXX")
          find "${tar_content_dir}" -maxdepth 1 \
            -name '*.pkg.tar.zst' | \
            while read -r pkgfile; do
              if printf '%s\n' "${pkgfile}" | \
                grep -vq -- '-any\.pkg\.tar\.zst$'; then
                # we do not check "any" packages for linked libraries
                # (why do they have them in the first place?)
                mkdir "${package_content_dir}/${pkgfile##*/}"
                tar -C "${package_content_dir}/${pkgfile##*/}" -xf "${pkgfile}" --zstd 2>/dev/null
                # we rely on "${checksum}" not appearing in any objdump output
                : "${checksum?umm, checksum is unset - this will break below sed-fu}"
                # TODO: symbols may be in object files _inside_archives_
                # In that case, we're interested in the object file's name,
                # not the archive's file name
                find "${package_content_dir}/${pkgfile##*/}" \
                  -name 'opt' -prune , \
                  -type f \
                  -exec objdump -x '{}' \; 2>/dev/null | \
                  sed '
                    /^architecture:.* i386:x86-64, /,/^architecture:.* i386:x86-32, / d
                    \@^\s*RPATH\s\+/usr/lib/perl\([0-9]\+\)/\1\.[0-9.]\+/@ {
                      s@^\s*RPATH\s\+/usr/lib/perl\([0-9]\+\)/\(\1\(\.[0-9.]\+\)\?\)\.\([0-9]\+\)/.*$@\2 \4@
                      w '"${pkgfile}"'.needed-perl-version
                      d
                    }
                    /\sNEEDED\s/ {
                      s/^\s*\S\+\s\+\(\S\+\)\(\s.*\)\?$/\1/
                      /\.c32$/d
                      s,^.*/,,
                      t
                    }
                    /^Version References:$/,/^$/ {
                      /^\s*required from / {
                        s/^\s*required from \(\S\+\):\s*$/'"${checksum}"'\1/
                        T end
                        h
                        d
                      }
                      s/^\s*\(0x[0-9a-fA-F]\+\)\s\+0x[0-9a-fA-F]\+\s\+[0-9]\+\s\+\(\S\+\)$/\2-\1/
                      T end
                      G
                      s/^\(\S\+\)\n'"${checksum}"'\(\S\+\)$/\2-\1/
                      t
                    }
                    :end
                    d
                  ' | \
                  sort -u > \
                  "${pkgfile}.so.needs"
                sed -i '
                  /^\(libav.*\.so\)\.[0-9]\+$/ {
                    :a
                    N
                    s/^\(libav.*\.so\)\(\.[0-9]\+\)\?\n\1\.[0-9]\+$/\1/
                    t a
                    P
                    D
                  }
                ' "${pkgfile}.so.needs"
                sed '
                  s/^installed = \(qt[0-9]\+-\S\+\)-\([0-9.]\+\)\(-[^-]\+\)\{2\}$/\1 \2/
                  t
                  d
                ' "${package_content_dir}/${pkgfile##*/}/.BUILDINFO" | \
                  sort -u | \
                  sort -k1,1 > \
                  "${tmp_dir}/installed-qt-versions"
                sed '
                  s/^depend = \(qt[0-9]\+-\S\+\)$/\1/
                  t
                  d
                ' "${package_content_dir}/${pkgfile##*/}/.PKGINFO" | \
                  sort -u | \
                  join -1 1 -2 1 -o 2.1,2.2 - "${tmp_dir}/installed-qt-versions" | \
                  tr ' ' '=' >> \
                  "${pkgfile}.so.needs"
                find "${package_content_dir}/${pkgfile##*/}" \
                  -name 'opt' -prune , \
                  \( -type f -o -type l \) \
                  -printf "${checksum}"'%f\n' \
                  -exec objdump -x '{}' \; 2>/dev/null | \
                  sed '
                    /^architecture:.* i386:x86-64, /,/^architecture:.* i386:x86-32, / d
                    /^'"${checksum}"'/ {
                      h
                      d
                    }
                    /\sSONAME\s/ {
                      s/^\s*\S\+\s\+\(\S\+\)\s.*$/\1/
                      t
                    }
                    /^Version definitions:$/,/^$/ {
                      s/^[0-9]\+\s\+0x[0-9a-fA-F]\+\s\+\(0x[0-9a-fA-F]\+\)\s\+\(\S\+\)$/\2-\1/
                      T end
                      G
                      s/^\(\S\+\)\n'"${checksum}"'\(\S\+\)$/\2-\1/
                      t
                    }
                    :end
                    d
                  ' | \
                  sort -u >> \
                  "${pkgfile}.so.provides"
                find "${package_content_dir:?}/${pkgfile##*/}" -xdev -not -type l -exec chmod 777 '{}' \;
                rm -rf --one-file-system "${package_content_dir:?}/${pkgfile##*/}"
              fi
              {
                tar -tf "${pkgfile}" --zstd 2>/dev/null | \
                  sed -n '
                    s,^usr/lib/python\(2\?\)\([013-9.][0-9.]*\)/$,python\1 \1\2,
                    t print
                    s,^usr/lib/perl[^/]\+/\([0-9.]\+\)/$,perl \1,
                    t print
                    s,^usr/lib/ruby/\([0-9.]\+\)/$,ruby \1,
                    t print
                    b
                    :print
                    s/\.\([^.]\+\)$/ \1/
                    p
                  '
                if [ -f "${pkgfile}.needed-perl-versions" ]; then
                  sed '
                    s/^/perl /
                  ' "${pkgfile}.needed-perl-versions"
                  rm "${pkgfile}.needed-perl-versions"
                fi
              } | \
                while read -r name major_version minor_version; do
                  printf '%s>=%s.%s\n%s<%s.%s\n' \
                    "${name}" \
                    "${major_version}" \
                    "${minor_version}" \
                    "${name}" \
                    "${major_version}" \
                    "$((minor_version+1))"
                done >> \
                "${pkgfile}.so.needs"
              # TODO: dependency-adding from make_source_info() should
              # be replicated here, somehow ...
            done
          >&2 printf 'running namcap ...'
          if [ "${repository}" = 'multilib' ]; then
            x86_64_build_command='multilib-build'
          else
            x86_64_build_command='extra-x86_64-build'
          fi
          # this is a little hack: makepkg receives '--version', but namcap is run nevertheless
          # (and it only works with devtools32, because they are running namcap on *.pkg.tar.zst in the base directory, too)
          sudo "${x86_64_build_command}" -- -- --version > /dev/null 2>&1 || \
            sudo "${x86_64_build_command}" -c -- -- --version > /dev/null 2>&1 || \
            true
          >&2 printf ' ok.\n'
          >&2 printf 'smoothen namcap log ...'
          # now we generate diffs from the namcap.logs
          find . "${tar_content_dir}/" -maxdepth 1 -type f -name '*.pkg.tar.zst-namcap.log' -printf '%p\n' | \
            while read -r log; do
              smoothen_namcap_log "${log}"
            done
          find "${tar_content_dir}/" -maxdepth 1 -type f -name '*.pkg.tar.zst-namcap.log' -printf '%f\n' | \
            sed '
              s|\(^.*\)-'"${arch}"'\(\.pkg\.tar\.zst-namcap\.log\)$|\0 \1-x86_64\2|
              s|^.*-any\.pkg\.tar\.zst-namcap\.log$|\0 \0|
            ' | \
            while read -r log x86_64_log; do
              if [ -f "${x86_64_log}" ]; then
                diff -u "${x86_64_log}" "${tar_content_dir}/${log}" | \
                  sed '
                    1,3d
                    /^[^+-]/d
                  ' | \
                  sponge "${tar_content_dir}/${log}"
              else
                sed -i 's|^|*|' "${tar_content_dir}/${log}"
              fi
            done
          >&2 printf ' ok.\n'
          echo 'uploading' > "${tmp_dir}/.ping-build-master"
          if ${upload_to_build_master}; then
            find "${tar_content_dir}/" -maxdepth 1 \
              \( \
                -name '*.pkg.tar.zst-namcap.log' -o \
                -name '*.pkg.tar.zst.so.needs' -o \
                -name '*.pkg.tar.zst.so.provides' \
              \) \
              -execdir gzip '{}' \;
          else
            find "${tar_content_dir}/" -maxdepth 1 \
              -name '*.pkg.tar.zst-namcap.log' \
              -execdir grep -HF '' '{}' \;
          fi
          # shellcheck disable=SC2046
          tar -cf 'package.tar' -C "${tar_content_dir}" -- $(
            find "${tar_content_dir}/" -maxdepth 1 \
              \( \
                -name '*.pkg.tar.zst' -o \
                -name '*.pkg.tar.zst.sig' -o \
                -name '*.pkg.tar.zst-namcap.log.gz' -o \
                -name '*.pkg.tar.zst.so.needs.gz' -o \
                -name '*.pkg.tar.zst.so.provides.gz' \
              \) \
              -printf '%f\n'
            ) || \
            {
              find "${tar_content_dir}/" -maxdepth 1 >&2
              tar -cf 'package.tar' -T /dev/null
            }
          if ${upload_to_build_master}; then
            # shellcheck disable=SC2046
            rsync $(
              find "${tar_content_dir}/" -maxdepth 1 \
                \( \
                  -name '*.pkg.tar.zst' -o \
                  -name '*.pkg.tar.zst.sig' \
                \) \
              -printf '%p\n'
            ) "rsync://mirror.archlinux32.org/transfer32/" || true
          fi
          while ${upload_to_build_master}; do
            err=0
            # shellcheck disable=SC2029
            ssh \
              -i "${master_build_server_identity}" \
              -p "${master_build_server_port}" \
              "${master_build_server_user}@${master_build_server}" \
              'return-assignment' "${package}" "${git_revision}" "${mod_git_revision}" "${repository}" "${arch}" "${sub_pkgrel}" \
              < 'package.tar' || \
              err=$?
            case ${err} in
              0)
                # upload successful
                break
              ;;
              1)
                >&2 echo '"return-assignment" was running already.'
                wait_some_time 30
              ;;
              2)
                >&2 echo 'I was too slow, the package is outdated. I will continue ...'
                break
              ;;
              3)
                >&2 echo "'return-assignment' reports a signature error."
                exit 1
              ;;
              4)
                >&2 echo "'return-assignment' reports too many or missing packages."
                exit 1
              ;;
              5)
                >&2 echo "'return-assignment' was called with wrong arguments."
                exit 1
              ;;
              *)
                >&2 echo "unknown return code ${err} from 'return-assignment'"
                exit ${err}
            esac
          done
          break
        fi
        echo 'failure' > "${tmp_dir}/.ping-build-master"
        >&2 printf ' failed.\n'
      done

      if ! ${success}; then
        for log in *'.build-log'; do
          if [ -f "${log}" ]; then
            if ${upload_to_build_master}; then
              printf '%s@%s\n' \
                "$(whoami)" \
                "$(hostname)" >> \
                "${log}"
              gzip "${log}"
            else
              grep -HF '' "${log}"
            fi
          fi
        done
        if ${upload_to_build_master} && \
          tar -cf 'build-logs.gz.tar' \
          -- *'.build-log.gz'; then
          while true; do
            err=0
            # shellcheck disable=SC2029
            ssh \
              -i "${master_build_server_identity}" \
              -p "${master_build_server_port}" \
              "${master_build_server_user}@${master_build_server}" \
              'return-assignment' "${package}" "${git_revision}" "${mod_git_revision}" "${repository}" "${arch}" 'ERROR' \
              < 'build-logs.gz.tar' || \
              err=$?
            case ${err} in
              0)
                # upload successful
                break
              ;;
              1)
                >&2 echo '"return-assignment" was running already.'
                wait_some_time 30
              ;;
              2)
                >&2 echo 'I was too slow, the package is outdated. I will continue ...'
                break
              ;;
              5)
                >&2 echo '"return-assignment" was called with wrong arguments.'
                exit 1
              ;;
              *)
                >&2 echo "unknown return code ${err} from 'return-assignment'"
                exit ${err}
            esac
          done
        fi
        if ${exit_after_failure}; then
          >&2 echo 'Build failed, exiting now'
          exit 0
        fi
      fi

      # clean up tmp_dir
      cd "${base_dir}"
      recursively_umount_and_rm "${tmp_dir}"
      if [ -z "${forced_package}" ]; then
        flock -u 9 || true
      fi
      trap - EXIT

      continue

    ;;

    1)

      >&2 echo 'get-assignment told me:'
      >&2 echo ' come back (shortly) later - I was running already'
      wait_some_time 30
      continue

    ;;

    2)

      >&2 echo 'get-assignment told me:'
      >&2 echo ' 2: come back later - there are still packages to be built,'
      >&2 echo ' but currently none has all its dependencies ready'
      wait_some_time 30
      continue

    ;;

    3)

      >&2 echo 'get-assignment told me:'
      >&2 echo ' 3: come back after the next run of get-package-updates or when'
      >&2 echo ' some currently building packages are returned - currently'
      >&2 echo ' there are no pending buildable packages'
      exit 0

    ;;

    4)

      >&2 echo 'get-assignment told me:'
      >&2 echo ' 4: wrong number of arguments'
      exit 5

    ;;

    *)

      >&2 echo "ERROR: Unknown exit code ${err} from 'get-assignment'."
      exit ${err}

    ;;

  esac

done

# remove the slave switch file if it exists (and if we are runnig on a slave)  
if ! ${i_am_the_master}; then
  SLAVE=$(whoami)
  [ -f "/tmp/do-not-run-build-slave.$SLAVE" ] && rm "/tmp/do-not-run-build-slave.$SLAVE"
fi

>&2 echo 'Done.'