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* nix-instantiate now instantiantes the closure of the set of 

descriptor templates under the import relation.  I.e., we can now
  say:

    nix-instantiate outdir foo.nix

  which will create descriptors for foo.nix and all imported packages
  in outdir/.
This commit is contained in:
Eelco Dolstra 2003-03-20 22:23:48 +00:00
parent f7a98e081d
commit cadc3852e4
1 changed files with 52 additions and 14 deletions
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66
src/nix-instantiate
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@ -1,23 +1,61 @@
#! /usr/bin/perl -w
my $descr = $ARGV[0];
use strict;
use FileHandle;
use File::Spec;
open DESCR, "< $descr";
my $outdir = $ARGV[0];
while (<DESCR>) {
chomp;
my %donetmpls = ();
if (/^(\w+)\s*=\s*([\w\d\.\/-]+)\s*(\#.*)?$/) {
my $name = $1;
my $file = $2;
my $out = `md5sum $file`;
$out =~ /^([0-9a-f]+)\s/;
my $hash = $1;
print "$name = $hash\n";
} else {
print "$_\n";
sub convert {
my $descr = shift;
if (defined $donetmpls{$descr}) {
return $donetmpls{$descr};
}
my ($x, $dir, $fn) = File::Spec->splitpath($descr);
print "$descr\n";
my $IN = new FileHandle;
my $OUT = new FileHandle;
my $outfile = "$outdir/$fn";
open $IN, "< $descr" or die "cannot open $descr";
open $OUT, "> $outfile" or die "cannot create $outfile";
while (<$IN>) {
chomp;
if (/^(\w+)\s*=\s*([+\w\d\.\/-]+)\s*(\#.*)?$/) {
my $name = $1;
my $file = $2;
$file = File::Spec->rel2abs($file, $dir);
my $out = `md5sum $file`;
die unless ($? == 0);
$out =~ /^([0-9a-f]+)\s/;
my $hash = $1;
print $OUT "$name = $hash\n";
} elsif (/^(\w+)\s*<-\s*([+\w\d\.\/-]+)\s*(\#.*)?$/) {
my $name = $1;
my $file = $2;
$file = File::Spec->rel2abs($file, $dir);
$file = convert($file);
my $out = `md5sum $file`;
die unless ($? == 0);
$out =~ /^([0-9a-f]+)\s/;
my $hash = $1;
print $OUT "$name <- $hash\n";
} else {
print $OUT "$_\n";
}
}
$donetmpls{$descr} = $outfile;
return $outfile;
}
close DESCR;
for (my $i = 1; $i < scalar @ARGV; $i++) {
convert(File::Spec->rel2abs($ARGV[$i]));
}