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
|
#! @perl@ -w @perlFlags@
use strict;
use Nix::Config;
use Nix::Store;
use File::Temp qw(tempdir);
my $dryRun = 0;
my $verbose = 0;
my $runEnv = 0;
my @instArgs = ();
my @buildArgs = ();
my @exprs = ();
my $shell = $ENV{SHELL} || "/bin/sh";
my $envCommand = "p=\$PATH; source \$stdenv/setup; PATH=\$PATH:\$p; exec $shell";
my @envExclude = ();
my $tmpDir = tempdir("nix-build.XXXXXX", CLEANUP => 0, TMPDIR => 1)
or die "cannot create a temporary directory";
my $outLink = "./result";
my $drvLink = "$tmpDir/derivation";
# Ensure that the $tmpDir is deleted.
$SIG{'INT'} = sub { exit 1 };
for (my $n = 0; $n < scalar @ARGV; $n++) {
my $arg = $ARGV[$n];
if ($arg eq "--help") {
exec "man nix-build" or die;
}
elsif ($arg eq "--version") {
print "nix-build (Nix) $Nix::Config::version\n";
exit 0;
}
elsif ($arg eq "--add-drv-link") {
$drvLink = "./derivation";
}
elsif ($arg eq "--no-out-link" or $arg eq "--no-link") {
$outLink = "$tmpDir/result";
}
elsif ($arg eq "--drv-link") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
$drvLink = $ARGV[$n];
}
elsif ($arg eq "--out-link" or $arg eq "-o") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
$outLink = $ARGV[$n];
}
elsif ($arg eq "--attr" or $arg eq "-A" or $arg eq "-I") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
push @instArgs, ($arg, $ARGV[$n]);
}
elsif ($arg eq "--arg" || $arg eq "--argstr") {
die "$0: `$arg' requires two arguments\n" unless $n + 2 < scalar @ARGV;
push @instArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
$n += 2;
}
elsif ($arg eq "--log-type") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
push @instArgs, ($arg, $ARGV[$n]);
push @buildArgs, ($arg, $ARGV[$n]);
}
elsif ($arg eq "--option") {
die "$0: `$arg' requires two arguments\n" unless $n + 2 < scalar @ARGV;
push @instArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
push @buildArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
$n += 2;
}
elsif ($arg eq "--max-jobs" or $arg eq "-j" or $arg eq "--max-silent-time" or $arg eq "--log-type" or $arg eq "--cores") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
push @buildArgs, ($arg, $ARGV[$n]);
}
elsif ($arg eq "--dry-run") {
push @buildArgs, "--dry-run";
$dryRun = 1;
}
elsif ($arg eq "--show-trace") {
push @instArgs, $arg;
}
elsif ($arg eq "-") {
@exprs = ("-");
}
elsif ($arg eq "--verbose" or substr($arg, 0, 2) eq "-v") {
push @buildArgs, $arg;
push @instArgs, $arg;
$verbose = 1;
}
elsif ($arg eq "--quiet" || $arg eq "--repair") {
push @buildArgs, $arg;
push @instArgs, $arg;
}
elsif ($arg eq "--run-env") {
$runEnv = 1;
}
elsif ($arg eq "--command") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
$envCommand = $ARGV[$n];
}
elsif ($arg eq "--exclude") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
push @envExclude, $ARGV[$n];
}
elsif (substr($arg, 0, 1) eq "-") {
push @buildArgs, $arg;
}
else {
push @exprs, $arg;
}
}
@exprs = ("./default.nix") if scalar @exprs == 0;
foreach my $expr (@exprs) {
# Instantiate.
my @drvPaths;
# !!! would prefer the perl 5.8.0 pipe open feature here.
my $pid = open(DRVPATHS, "-|") || exec "$Nix::Config::binDir/nix-instantiate", "--add-root", $drvLink, "--indirect", @instArgs, $expr;
while (<DRVPATHS>) {chomp; push @drvPaths, $_;}
if (!close DRVPATHS) {
die "nix-instantiate killed by signal " . ($? & 127) . "\n" if ($? & 127);
exit 1;
}
if ($runEnv) {
die "$0: ‘--run-env’ requires a single derivation\n" if scalar @drvPaths != 1;
my $drvPath = readlink $drvPaths[0] or die "cannot read symlink `$drvPaths[0]'";
my $drv = derivationFromPath($drvPath);
# Build or fetch all dependencies of the derivation.
my @inputDrvs = grep { my $x = $_; (grep { $x =~ $_ } @envExclude) == 0 } @{$drv->{inputDrvs}};
system("$Nix::Config::binDir/nix-store -r @buildArgs @inputDrvs @{$drv->{inputSrcs}} > /dev/null") == 0
or die "$0: failed to build all dependencies\n";
# Set the environment.
$ENV{'NIX_BUILD_TOP'} = $ENV{'TMPDIR'} || "/tmp";
foreach (keys %{$drv->{env}}) {
$ENV{$_} = $drv->{env}->{$_};
}
# Run a shell using the derivation's environment. For
# convenience, source $stdenv/setup to setup additional
# environment variables. Also don't lose the current $PATH
# directories.
exec($ENV{SHELL}, "-c", $envCommand);
die;
}
# Ugly hackery to make "nix-build -A foo.all" produce symlinks
# ./result, ./result-dev, and so on, rather than ./result,
# ./result-2-dev, and so on. This combines multiple derivation
# paths into one "/nix/store/drv-path!out1,out2,..." argument.
my $prevDrvPath = "";
my @drvPaths2;
foreach my $drvPath (@drvPaths) {
my $p = $drvPath; my $output = "out";
if ($drvPath =~ /(.*)!(.*)/) {
$p = $1; $output = $2;
} else {
$p = $drvPath;
}
my $target = readlink $p or die "cannot read symlink `$p'";
print STDERR "derivation is $target\n" if $verbose;
if ($target eq $prevDrvPath) {
push @drvPaths2, (pop @drvPaths2) . "," . $output;
} else {
push @drvPaths2, $target . "!" . $output;
$prevDrvPath = $target;
}
}
# Build.
my @outPaths;
$pid = open(OUTPATHS, "-|") || exec "$Nix::Config::binDir/nix-store", "--add-root", $outLink, "--indirect", "-r",
@buildArgs, @drvPaths2;
while (<OUTPATHS>) {chomp; push @outPaths, $_;}
if (!close OUTPATHS) {
die "nix-store killed by signal " . ($? & 127) . "\n" if ($? & 127);
exit 1;
}
next if $dryRun;
foreach my $outPath (@outPaths) {
my $target = readlink $outPath or die "cannot read symlink `$outPath'";
print "$target\n";
}
}
|
