blob: 258be5ac097f60e73a20d279b429047fcf7395ca (
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
|
#!/bin/sh
# Debootstrap a target system
#
# Copyright © 2021-2022 Guilhem Moulin <guilhem@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -eu
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
export PATH
ESSENTIAL="/media/__essential__"
TEMPDIR="$(mktemp --tmpdir --directory "debootstrap.XXXXXXXXXX")"
trap "rm -rf -- \"$TEMPDIR\"" EXIT INT TERM
sed -rn "/^Package:\\s*/I {s///;s/$/ install/p}" "$ESSENTIAL/Packages" >"$TEMPDIR/Packages.sel"
install -m0644 /dev/null "/var/lib/dpkg/status"
dpkg --update-avail "$ESSENTIAL/Packages"
dpkg --set-selections <"$TEMPDIR/Packages.sel"
mkdir -- "$TEMPDIR/dpkg"
mkdir -- "$TEMPDIR/dpkg/files" "$TEMPDIR/dpkg/depends" "$TEMPDIR/dpkg/pre-depends"
# extract metadata (package names, file names, Depends and Pre-Depends
# for easier processing)
for deb in "$ESSENTIAL"/*.deb; do
pkg=$(dpkg-deb --show --showformat="\${Package}" "$deb")
case "$pkg" in
# special case: base-files Pre-Depends on awk but we only have mawk (or gawk)
mawk|gawk) pkg="awk";;
esac
printf "%s\\n" "$pkg" >>"$TEMPDIR/dpkg/avail"
printf "%s\\n" "$deb" >"$TEMPDIR/dpkg/files/$pkg"
dpkg-deb --show --showformat="\${Pre-Depends}\\n" "$deb" >"$TEMPDIR/predeps"
dpkg-deb --show --showformat="\${Depends}\\n" "$deb" >"$TEMPDIR/deps"
sed -ri "s/,\\s*/\\n/g" -- "$TEMPDIR/predeps" "$TEMPDIR/deps"
sed -i "s/[[:blank:]:].*//; /^[[:blank:]]*$/d" -- "$TEMPDIR/predeps" "$TEMPDIR/deps"
mv -T -- "$TEMPDIR/predeps" "$TEMPDIR/dpkg/pre-depends/$pkg"
mv -T -- "$TEMPDIR/deps" "$TEMPDIR/dpkg/depends/$pkg"
done
if [ -L /bin ] && [ -L /sbin ] && [ -L /lib ]; then
# TODO remove this once Bookworm is released, assuming
# init-system-helpers no longer has "Depends: usrmerge | usr-is-merged"
sed -i "s/^usrmerge$/usr-is-merged/" -- "$TEMPDIR/dpkg/depends/init-system-helpers"
fi
# recursively append dependencies to $OUT; abort and return 1 if one of
# the (recursive) dependency has an unsatisfied Pre-Depends
resolve_deps() {
local pkg="$1" dep
while read -r dep; do
if grep -Fxq -e "$dep" <"$TEMPDIR/dpkg/avail"; then
# $pkg has an unsatisfied Pre-Depends, can't proceed further
return 1
fi
done <"$TEMPDIR/dpkg/pre-depends/$pkg"
while read -r dep; do
if grep -Fxq -e "$dep" <"$TEMPDIR/dpkg/avail" && ! grep -Fxq -e "$dep" <"$OUT"; then # break cycles
printf "%s\\n" "$dep" >>"$OUT"
resolve_deps "$dep" || return $?
fi
done <"$TEMPDIR/dpkg/depends/$pkg"
return 0
}
# dump to $OUT a list of packages that can be installed (only packages
# without unsatisfied pre-dependencies, and typically packages that are
# pre-dependencies of other packages) -- using `dpkg --predep-package`
# would be convenient but it doesn't work with recursive dependencies,
# cf. #539133
can_install_next() {
local pkg
while read -r pkg; do
printf "%s\\n" "$pkg" >"$OUT"
if resolve_deps "$pkg"; then
return 0
fi
done <"$TEMPDIR/dpkg/avail"
echo "PANIC: No remaining dependencies are satisfiable!" >&2
cat <"$TEMPDIR/dpkg/avail" >&2
exit 1
}
# keep going until all available packages are installed
OUT="$TEMPDIR/pkg.list"
XARGS_IN="$TEMPDIR/deb.list"
while [ -s "$TEMPDIR/dpkg/avail" ]; do
can_install_next || exit 1
echo -n ">>> Installing: " >&2
paste -sd" " <"$OUT" >&2
while read -r pkg; do
cat "$TEMPDIR/dpkg/files/$pkg"
done <"$OUT" >"$XARGS_IN"
xargs -a"$XARGS_IN" -d"\\n" dpkg -i
grep -Fx -vf "$OUT" <"$TEMPDIR/dpkg/avail" >"$TEMPDIR/dpkg/avail.new" || true
mv -T -- "$TEMPDIR/dpkg/avail.new" "$TEMPDIR/dpkg/avail"
done
echo apt apt >/var/lib/dpkg/cmethopt
echo "deb [trusted=yes] file:/media/dists /" >/etc/apt/sources.list
cat >/etc/apt/apt.conf.d/99debootstrap <<-EOF
Acquire::Languages "none";
APT::Install-Recommends "false";
APT::Install-Suggests "false";
EOF
apt-get -oAcquire::Languages="none" -oAPT::Sandbox::User="root" -qq update
|
