-#! /bin/sh
-set -e
-
-# Check that we have all core packages.
-for dir in `cat libraries/core-packages`
-do
- if test ! -d libraries/$dir
- then
- echo "Looks like you're missing libraries/$dir." >&2
- echo "Maybe you haven't done './darcs-all get'?" >&2
- exit 1
- fi
-done
+#!/usr/bin/perl -w
+
+use strict;
+
+use Cwd;
+
+my %required_tag;
+
+$required_tag{"-"} = 1;
+
+while ($#ARGV ne -1) {
+ my $arg = shift @ARGV;
+
+ if ($arg =~ /^--required-tag=(.*)/) {
+ $required_tag{$1} = 1;
+ }
+ else {
+ die "Bad arg: $arg";
+ }
+}
+
+# Create libraries/*/{ghc.mk,GNUmakefile}
+system("/usr/bin/perl", "-w", "boot-pkgs") == 0
+ or die "Running boot-pkgs failed: $?";
+
+my $tag;
+my $dir;
+my $curdir;
+
+$curdir = &cwd()
+ or die "Can't find current directory: $!";
+
+# Check that we have all boot packages.
+open PACKAGES, "< packages";
+while (<PACKAGES>) {
+ if (/^#/) {
+ # Comment; do nothing
+ }
+ elsif (/^([a-zA-Z0-9\/.-]+) +([^ ]+) +[^ ]+ +[^ ]+ +[^ ]+$/) {
+ $dir = $1;
+ $tag = $2;
+
+ # If $tag is not "-" then it is an optional repository, so its
+ # absence isn't an error.
+ if (defined($required_tag{$tag})) {
+ # We would like to just check for an _darcs directory here,
+ # but in an lndir tree we avoid making _darcs directories,
+ # so it doesn't exist. We therefore require that every repo
+ # has a LICENSE file instead.
+ if (! -f "$dir/LICENSE") {
+ print STDERR "Error: $dir/LICENSE doesn't exist.\n";
+ die "Maybe you haven't done './darcs-all get'?";
+ }
+ }
+ }
+ else {
+ die "Bad line in packages file: $_";
+ }
+}
+close PACKAGES;