This file is indexed.

/usr/bin/dh_golang is in dh-golang 1.5.

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The actual contents of the file can be viewed below.

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#!/usr/bin/perl -w

eval 'exec /usr/bin/perl -w -S $0 ${1+"$@"}'
    if 0; # not running under some shell

=head1 NAME

dh_golang - Generates Built-Using substvar

=cut

use strict;
use Debian::Debhelper::Dh_Lib;
use Parse::DebControl; # not in core

=head1 SYNOPSIS

B<dh_golang> [S<I<debhelper options>>]

=head1 DESCRIPTION

B<dh_golang> is a debhelper program which adds the misc:Built-Using substvar
based on the Build-Dependencies of your packages. Every package starting with
golang is queried for the precise version number.

As an example, if you Build-Depend on golang-pq-dev, the resulting
misc:Built-Using value (aside from the precise version number) will look like
this:

golang (= 2:1.1.1-1), golang-pq-dev (= 0.0~git20130606-1),

=head1 NOTES

The best way to invoke B<dh_golang> is by using B<dh --with=golang>.

=cut

init();

############################################################################
# Generate misc:Built-Using substvar with the versions of all golang-*
# build-dependency packages.
############################################################################

my $built_using;

# TODO: switch to Dpkg::Control::Info, maybe?
my $control_parser = Parse::DebControl->new();
my $control_data = $control_parser->parse_file('./debian/control');
my $source_data = $control_data->[0];
if (!defined($source_data)) {
    error('Could not parse ./debian/control');
}
if (defined($source_data->{'Build-Depends'})) {
    my $golang_deps = join(' ', grep { defined }
                                map  { /^\s*(golang-[^\s]+)/; $1 }
                                split(',', $source_data->{'Build-Depends'}));
    if ($golang_deps ne '') {
        $built_using = `dpkg-query -f='\${source:Package} (= \${source:Version}), ' -W $golang_deps`;
    }
}

# If there is an easier way to have a universal misc:Built-Using on all binary
# packages, I am happy to merge your patch :).
foreach my $package (@{$dh{DOPACKAGES}}) {
    addsubstvar($package, "misc:Built-Using", $built_using);
}

=head1 SEE ALSO

dh(1)

=head1 AUTHORS

Michael Stapelberg <stapelberg@debian.org>

=cut

# vim:ts=4:sw=4:et