+#!/usr/bin/perl -w
+
+use strict;
+
+# Usage:
+#
+# ./darcs-all [-q] [-s] [--dph] [--extra] [--nofib] [--testsuite] get [darcs get flags]
+# This gets the GHC core repos, if they do not already exist.
+# -q says to be quite, and -s to be silent.
+# --dph, --extra, --nofib, --testsuite also get the dph library,
+# extralibs, nofib and testsuite
+# repos respectively
+# The darcs get flag you are most likely to want is --complete. By
+# default we pass darcs the --partial flag.
+#
+# ./darcs-all [-q] [-s] cmd [darcs cmd flags]
+# This runs the darcs "cmd" command, with any flags you give, in all
+# of the repos you have checked out. e.g.
+# ./darcs-all pull
+# ./darcs-all -q send --dry-run
+# -q says to be quite, and -s to be silent.
+
+$| = 1; # autoflush stdout after each print, to avoid output after die
+
+# Figure out where to get the other repositories from,
+# based on where this GHC repo came from.
+my $defaultrepo = `cat _darcs/prefs/defaultrepo`;
+chomp $defaultrepo;
+my $defaultrepo_base;
+my $checked_out_tree;
+
+if ($defaultrepo =~ /^...*:/) {
+ # HTTP or SSH
+ # Above regex says "at least two chars before the :", to avoid
+ # catching Win32 drives ("C:\").
+ $defaultrepo_base = $defaultrepo;
+ $defaultrepo_base =~ s#/[^/]+/?$##;
+ $checked_out_tree = 0;
+}
+elsif ($defaultrepo =~ /^\/|\.\.\/|.:(\/|\\)/) {
+ # Local filesystem, either absolute or relative path
+ # (assumes a checked-out tree):
+ $defaultrepo_base = $defaultrepo;
+ $checked_out_tree = 1;
+}
+else {
+ die "Couldn't work out defaultrepo";
+}