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
|
with import ../../lib;
with shell;
{ coreutils, dash, findutils, git, jq, openssh, pass, rsync, writers }:
let
check = { force, target }: let
sentinelFile = "${target.path}/.populate";
in runShell target /* sh */ ''
${optionalString force /* sh */ ''
mkdir -vp ${quote (dirOf sentinelFile)} >&2
touch ${quote sentinelFile}
''}
if ! test -e ${quote sentinelFile}; then
>&2 printf 'error: missing sentinel file: %s\n' ${quote (
optionalString (!isLocalTarget target) "${target.host}:" +
sentinelFile
)}
exit 1
fi
'';
do-backup = { target }: let
sentinelFile = "${target.path}/.populate";
in
runShell target /* sh */ ''
if ! test -d ${quote sentinelFile}; then
>&2 printf 'error" sentinel file is not a directory: %s\n' ${quote (
optionalString (!isLocalTarget target) "${target.host}:" +
sentinelFile
)}
exit 1
fi
rsync >&2 \
-aAXF \
--delete \
--exclude /.populate \
--link-dest=${quote target.path} \
${target.path}/ \
${target.path}/.populate/backup/
'';
pop.derivation = target: source: runShell target /* sh */ ''
nix-build -E ${quote source.text} -o ${quote target.path} >&2
'';
pop.file = target: source: let
config = rsyncDefaultConfig // derivedConfig // sourceConfig;
derivedConfig = {
useChecksum =
if isStorePath source.path
then true
else rsyncDefaultConfig.useChecksum;
};
sourceConfig =
filterAttrs (name: _: elem name (attrNames rsyncDefaultConfig)) source;
sourcePath =
if isStorePath source.path
then quote (toString source.path)
else quote source.path;
in
rsync' target config sourcePath;
pop.git = target: source: runShell target /* sh */ ''
set -efu
# Remove target path if it doesn't look like a git worktree.
# This can happen e.g. when it had a different type earlier.
if ! test -e ${quote target.path}/.git; then
rm -fR ${quote target.path}
fi
if ! test -e ${quote target.path}; then
${if source.shallow then /* sh */ ''
git init ${quote target.path}
'' else /* sh */ ''
git clone --recurse-submodules ${quote source.url} ${quote target.path}
''}
fi
cd ${quote target.path}
if ! url=$(git config remote.origin.url); then
git remote add origin ${quote source.url}
elif test "$url" != ${quote source.url}; then
git remote set-url origin ${quote source.url}
fi
# TODO resolve git_ref to commit hash
hash=${quote source.ref}
if ! test "$(git log --format=%H -1)" = "$hash"; then
${if source.fetchAlways then /* sh */ ''
${if source.shallow then /* sh */ ''
git fetch --depth=1 origin "$hash"
'' else /* sh */ ''
git fetch origin
''}
'' else /* sh */ ''
if ! git log -1 "$hash" >/dev/null 2>&1; then
${if source.shallow then /* sh */ ''
git fetch --depth=1 origin "$hash"
'' else /* sh */ ''
git fetch origin
''}
fi
''}
git reset --hard "$hash" >&2
git submodule update --init --recursive
fi
git clean -dfx \
${concatMapStringsSep " "
(pattern: /* sh */ "-e ${quote pattern}")
source.clean.exclude }
'';
pop.pass = target: source: let
passPrefix = "${source.dir}/${source.name}";
in /* sh */ ''
set -efu
umask 0077
if test -e ${quote source.dir}/.git; then
local_pass_info=${quote source.name}\ $(
${git}/bin/git -C ${quote source.dir} log -1 --format=%H ${quote source.name}
# we append a hash for every symlink, otherwise we would miss updates on
# files where the symlink points to
${findutils}/bin/find ${quote source.dir}/${quote source.name} -type l \
-exec ${coreutils}/bin/realpath {} + |
${coreutils}/bin/sort |
${findutils}/bin/xargs -r -n 1 ${git}/bin/git -C ${quote source.dir} log -1 --format=%H
)
remote_pass_info=$(${runShell target /* sh */ ''
cat ${quote target.path}/.pass_info || :
''})
if test "$local_pass_info" = "$remote_pass_info"; then
exit 0
fi
fi
tmp_dir=$(${coreutils}/bin/mktemp -dt populate-pass.XXXXXXXX)
trap cleanup EXIT
cleanup() {
rm -fR "$tmp_dir"
}
${findutils}/bin/find ${quote passPrefix} -type f -follow ! -name .gpg-id |
while read -r gpg_path; do
rel_name=''${gpg_path#${quote passPrefix}}
rel_name=''${rel_name%.gpg}
pass_date=$(
if test -e ${quote source.dir}/.git; then
${git}/bin/git -C ${quote source.dir} log -1 --format=%aI "$gpg_path"
fi
)
pass_name=${quote source.name}/$rel_name
tmp_path=$tmp_dir/$rel_name
${coreutils}/bin/mkdir -p "$(${coreutils}/bin/dirname "$tmp_path")"
PASSWORD_STORE_DIR=${quote source.dir} ${pass}/bin/pass show "$pass_name" > "$tmp_path"
if [ -n "$pass_date" ]; then
${coreutils}/bin/touch -d "$pass_date" "$tmp_path"
fi
done
if test -n "''${local_pass_info-}"; then
echo "$local_pass_info" > "$tmp_dir"/.pass_info
fi
${rsync' target rsyncDefaultConfig /* sh */ "$tmp_dir"}
'';
pop.pipe = target: source: /* sh */ ''
${quote source.command} | {
${runShell target /* sh */ "cat > ${quote target.path}"}
}
'';
# TODO rm -fR instead of ln -f?
pop.symlink = target: source: runShell target /* sh */ ''
ln -fnsT ${quote source.target} ${quote target.path}
'';
populate = target: name: source: let
source' = source.${source.type};
target' = target // { path = "${target.path}/${name}"; };
in writers.writeDash "populate.${target'.host}.${name}" ''
set -efu
${pop.${source.type} target' source'}
'';
rsync' = target: config: sourcePath: /* sh */ ''
source_path=${sourcePath}
if test -d "$source_path"; then
source_path=$source_path/
fi
${rsync}/bin/rsync \
${optionalString config.useChecksum /* sh */ "--checksum"} \
${optionalString target.sudo /* sh */ "--rsync-path=\"sudo rsync\""} \
${concatMapStringsSep " "
(pattern: /* sh */ "--exclude ${quote pattern}")
config.exclude} \
${concatMapStringsSep " "
(filter: /* sh */ "--${filter.type} ${quote filter.pattern}")
config.filters} \
-e ${quote (ssh' target)} \
-vFrlptD \
${optionalString config.deleteExcluded /* sh */ "--delete-excluded"} \
"$source_path" \
${quote (
optionalString (!isLocalTarget target) (
(optionalString (target.user != "") "${target.user}@") +
"${target.host}:"
) +
target.path
)} \
>&2
'';
rsyncDefaultConfig = {
useChecksum = false;
exclude = [];
filters = [];
deleteExcluded = true;
};
runShell = target: command:
if isLocalTarget target
then command
else
if target.sudo then /* sh */ ''
${ssh' target} ${quote target.host} ${quote "sudo bash -c ${quote command}"}
'' else ''
${ssh' target} ${quote target.host} ${quote command}
'';
ssh' = target: concatMapStringsSep " " quote (flatten [
"${openssh}/bin/ssh"
(mkUserPortSSHOpts target)
"-T"
target.extraOptions
]);
in
{ backup ? false, force ? false, source, target }:
writers.writeDash "populate.${target.host}" ''
set -efu
${check { inherit force target; }}
set -x
${optionalString backup (do-backup { inherit target; })}
${concatStringsSep "\n" (mapAttrsToList (populate target) source)}
''
|
