357 lines
11 KiB
Plaintext
Executable File
357 lines
11 KiB
Plaintext
Executable File
#! @perl@ -w @perlFlags@
|
||
|
||
use utf8;
|
||
use strict;
|
||
use Nix::Config;
|
||
use Nix::Store;
|
||
use Nix::Utils;
|
||
use File::Basename;
|
||
use Text::ParseWords;
|
||
use Cwd;
|
||
|
||
binmode STDERR, ":encoding(utf8)";
|
||
|
||
Nix::Config::readConfig;
|
||
|
||
my $dryRun = 0;
|
||
my $verbose = 0;
|
||
my $runEnv = $0 =~ /nix-shell$/;
|
||
my $pure = 0;
|
||
my $fromArgs = 0;
|
||
my $packages = 0;
|
||
# Same condition as bash uses for interactive shells
|
||
my $interactive = -t STDIN && -t STDERR;
|
||
|
||
my @instArgs = ();
|
||
my @buildArgs = ();
|
||
my @exprs = ();
|
||
|
||
my $shell = $ENV{SHELL} || "/bin/sh";
|
||
my $envCommand = ""; # interactive shell
|
||
my @envExclude = ();
|
||
|
||
my $myName = $runEnv ? "nix-shell" : "nix-build";
|
||
|
||
my $inShebang = 0;
|
||
my $script;
|
||
my @savedArgs;
|
||
|
||
my $tmpDir = mkTempDir($myName);
|
||
|
||
my $outLink = "./result";
|
||
my $drvLink = "$tmpDir/derivation";
|
||
|
||
# Ensure that the $tmpDir is deleted.
|
||
$SIG{'INT'} = sub { exit 1 };
|
||
|
||
|
||
# Heuristic to see if we're invoked as a shebang script, namely, if we
|
||
# have a single argument, it's the name of an executable file, and it
|
||
# starts with "#!".
|
||
if ($runEnv && defined $ARGV[0] && $ARGV[0] !~ /nix-shell/) {
|
||
$script = $ARGV[0];
|
||
if (-f $script && -x $script) {
|
||
open SCRIPT, "<$script" or die "$0: cannot open ‘$script’: $!\n";
|
||
my $first = <SCRIPT>;
|
||
if ($first =~ /^\#\!/) {
|
||
$inShebang = 1;
|
||
@savedArgs = @ARGV; shift @savedArgs;
|
||
@ARGV = ();
|
||
while (<SCRIPT>) {
|
||
chomp;
|
||
if (/^\#\!\s*nix-shell (.*)$/) {
|
||
push @ARGV, shellwords($1);
|
||
}
|
||
}
|
||
}
|
||
close SCRIPT;
|
||
}
|
||
}
|
||
|
||
|
||
for (my $n = 0; $n < scalar @ARGV; $n++) {
|
||
my $arg = $ARGV[$n];
|
||
|
||
if ($arg eq "--help") {
|
||
exec "man $myName" or die;
|
||
}
|
||
|
||
elsif ($arg eq "--version") {
|
||
print "$myName (Nix) $Nix::Config::version\n";
|
||
exit 0;
|
||
}
|
||
|
||
elsif ($arg eq "--add-drv-link") {
|
||
$drvLink = "./derivation";
|
||
}
|
||
|
||
elsif ($arg eq "--no-out-link" || $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" || $arg eq "-o") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$outLink = $ARGV[$n];
|
||
}
|
||
|
||
elsif ($arg eq "--attr" || $arg eq "-A" || $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" || $arg eq "-j" || $arg eq "--max-silent-time" || $arg eq "--log-type" || $arg eq "--cores" || $arg eq "--timeout" || $arg eq '--add-root') {
|
||
$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 ($arg eq "--verbose" || substr($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 "--check") {
|
||
push @buildArgs, $arg;
|
||
}
|
||
|
||
elsif ($arg eq "--run-env") { # obsolete
|
||
$runEnv = 1;
|
||
}
|
||
|
||
elsif ($arg eq "--command" || $arg eq "--run") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
$envCommand = "$ARGV[$n]\nexit";
|
||
$interactive = 0 if $arg eq "--run";
|
||
}
|
||
|
||
elsif ($arg eq "--exclude") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
push @envExclude, $ARGV[$n];
|
||
}
|
||
|
||
elsif ($arg eq "--pure") { $pure = 1; }
|
||
elsif ($arg eq "--impure") { $pure = 0; }
|
||
|
||
elsif ($arg eq "--expr" || $arg eq "-E") {
|
||
$fromArgs = 1;
|
||
push @instArgs, "--expr";
|
||
}
|
||
|
||
elsif ($arg eq "--packages" || $arg eq "-p") {
|
||
$packages = 1;
|
||
}
|
||
|
||
elsif ($inShebang && $arg eq "-i") {
|
||
$n++;
|
||
die "$0: ‘$arg’ requires an argument\n" unless $n < scalar @ARGV;
|
||
my $interpreter = $ARGV[$n];
|
||
# Überhack to support Perl. Perl examines the shebang and
|
||
# executes it unless it contains the string "perl" or "indir",
|
||
# or (undocumented) argv[0] does not contain "perl". Exploit
|
||
# the latter by doing "exec -a".
|
||
my $execArgs = $interpreter =~ /perl/ ? "-a PERL" : "";
|
||
sub shellEscape {
|
||
my $s = $_;
|
||
$s =~ s/'/'\\''/g;
|
||
return "'" . $s . "'";
|
||
}
|
||
$envCommand = "exec $execArgs $interpreter $script ${\(join ' ', (map shellEscape, @savedArgs))}";
|
||
}
|
||
|
||
elsif (substr($arg, 0, 1) eq "-") {
|
||
push @buildArgs, $arg;
|
||
}
|
||
|
||
elsif ($arg eq "-Q" || $arg eq "--no-build-output") {
|
||
push @buildArgs, $arg;
|
||
push @instArgs, $arg;
|
||
}
|
||
|
||
else {
|
||
push @exprs, $arg;
|
||
}
|
||
}
|
||
|
||
die "$0: ‘-p’ and ‘-E’ are mutually exclusive\n" if $packages && $fromArgs;
|
||
|
||
if ($packages) {
|
||
push @instArgs, "--expr";
|
||
@exprs = (
|
||
'with import <nixpkgs> { }; (pkgs.runCommandCC or pkgs.runCommand) "shell" { buildInputs = [ '
|
||
. (join " ", map { "($_)" } @exprs) . ']; } ""');
|
||
} elsif (!$fromArgs) {
|
||
@exprs = ("shell.nix") if scalar @exprs == 0 && $runEnv && -e "shell.nix";
|
||
@exprs = ("default.nix") if scalar @exprs == 0;
|
||
}
|
||
|
||
$ENV{'IN_NIX_SHELL'} = 1 if $runEnv;
|
||
|
||
|
||
foreach my $expr (@exprs) {
|
||
|
||
# Instantiate.
|
||
my @drvPaths;
|
||
if ($expr !~ /^\/.*\.drv$/) {
|
||
# If we're in a #! script, interpret filenames relative to the
|
||
# script.
|
||
$expr = dirname(Cwd::abs_path($script)) . "/" . $expr
|
||
if $inShebang && !$packages && $expr !~ /^\//;
|
||
|
||
# !!! 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;
|
||
}
|
||
} else {
|
||
push @drvPaths, $expr;
|
||
}
|
||
|
||
if ($runEnv) {
|
||
die "$0: a single derivation is required\n" if scalar @drvPaths != 1;
|
||
my $drvPath = $drvPaths[0];
|
||
$drvPath = (split '!',$drvPath)[0];
|
||
$drvPath = readlink $drvPath or die "cannot read symlink ‘$drvPath’" if -l $drvPath;
|
||
my $drv = derivationFromPath($drvPath);
|
||
|
||
# Build or fetch all dependencies of the derivation.
|
||
my @inputDrvs = grep { my $x = $_; (grep { $x =~ $_ } @envExclude) == 0 } @{$drv->{inputDrvs}};
|
||
system("$Nix::Config::binDir/nix-store", "-r", "--no-output", "--no-gc-warning", @buildArgs, @inputDrvs, @{$drv->{inputSrcs}}) == 0
|
||
or die "$0: failed to build all dependencies\n";
|
||
|
||
# Set the environment.
|
||
my $tmp = $ENV{"TMPDIR"} // $ENV{"XDG_RUNTIME_DIR"} // "/tmp";
|
||
if ($pure) {
|
||
foreach my $name (keys %ENV) {
|
||
next if grep { $_ eq $name } ("HOME", "USER", "LOGNAME", "DISPLAY", "PATH", "TERM", "IN_NIX_SHELL", "TZ", "PAGER", "NIX_BUILD_SHELL");
|
||
delete $ENV{$name};
|
||
}
|
||
# NixOS hack: prevent /etc/bashrc from sourcing /etc/profile.
|
||
$ENV{'__ETC_PROFILE_SOURCED'} = 1;
|
||
}
|
||
$ENV{'NIX_BUILD_TOP'} = $ENV{'TMPDIR'} = $ENV{'TEMPDIR'} = $ENV{'TMP'} = $ENV{'TEMP'} = $tmp;
|
||
$ENV{'NIX_STORE'} = $Nix::Config::storeDir;
|
||
if (defined $Nix::Config::config{"build-cores"}) {
|
||
$ENV{'NIX_BUILD_CORES'} = $Nix::Config::config{"build-cores"};
|
||
}
|
||
$ENV{$_} = $drv->{env}->{$_} foreach keys %{$drv->{env}};
|
||
|
||
# Run a shell using the derivation's environment. For
|
||
# convenience, source $stdenv/setup to setup additional
|
||
# environment variables and shell functions. Also don't lose
|
||
# the current $PATH directories.
|
||
my $rcfile = "$tmpDir/rc";
|
||
writeFile(
|
||
$rcfile,
|
||
"rm -rf '$tmpDir'; " .
|
||
'[ -n "$PS1" ] && [ -e ~/.bashrc ] && source ~/.bashrc; ' .
|
||
($pure ? '' : 'p=$PATH; ' ) .
|
||
'dontAddDisableDepTrack=1; ' .
|
||
'[ -e $stdenv/setup ] && source $stdenv/setup; ' .
|
||
($pure ? '' : 'PATH=$PATH:$p; unset p; ') .
|
||
'set +e; ' .
|
||
'[ -n "$PS1" ] && PS1="\n\[\033[1;32m\][nix-shell:\w]$\[\033[0m\] "; ' .
|
||
'if [ "$(type -t runHook)" = function ]; then runHook shellHook; fi; ' .
|
||
'unset NIX_ENFORCE_PURITY; ' .
|
||
'unset NIX_INDENT_MAKE; ' .
|
||
'shopt -u nullglob; ' .
|
||
'unset TZ; ' . (defined $ENV{'TZ'} ? "export TZ='${ENV{'TZ'}}'; " : '') .
|
||
$envCommand);
|
||
my @args = ($ENV{NIX_BUILD_SHELL} // "bash");
|
||
push @args, "--rcfile" if $interactive;
|
||
push @args, $rcfile;
|
||
exec @args;
|
||
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;
|
||
my $pid = open(OUTPATHS, "-|") || exec "$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 ($? & 127);
|
||
exit ($? >> 8 || 1);
|
||
}
|
||
|
||
next if $dryRun;
|
||
|
||
foreach my $outPath (@outPaths) {
|
||
my $target = readlink $outPath or die "cannot read symlink ‘$outPath’";
|
||
print "$target\n";
|
||
}
|
||
}
|