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Add an option "--exclude" to filter dependencies in "nix-build --run-env"

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Sometimes when doing "nix-build --run-env" you don't want all
dependencies to be built.  For instance, if we want to do "--run-env"
on the "build" attribute in Hydra's release.nix (to get Hydra's build
environment), we don't want its "tarball" dependency to be built.  So
we can do:

  $ nix-build --run-env release.nix -A build --exclude 'hydra-tarball'

This will skip the dependency whose name matches the "hydra-tarball"
regular expression.  The "--exclude" option can be repeated any number
of times.
This commit is contained in:
Eelco Dolstra 2012-03-27 11:40:47 +02:00
parent 3e94ffffd6
commit 5144abe5b6
1 changed files with 9 additions and 1 deletions
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10
scripts/nix-build.in
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@ -15,6 +15,7 @@ my @buildArgs = ();
my @exprs = ();
my $envCommand = "p=\$PATH; source \$stdenv/setup; PATH=\$PATH:\$p; exec $ENV{SHELL}";
my @envExclude = ();
my $tmpDir = tempdir("nix-build.XXXXXX", CLEANUP => 1, TMPDIR => 1)
@ -133,6 +134,12 @@ EOF
$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;
}
@ -163,7 +170,8 @@ foreach my $expr (@exprs) {
my $drv = derivationFromPath($drvPath);
# Build or fetch all dependencies of the derivation.
system("$Nix::Config::binDir/nix-store -r @buildArgs @{$drv->{inputDrvs}} @{$drv->{inputSrcs}} > /dev/null") == 0
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.