File: dh_haskell_depends_hugs

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haskell-devscripts 0.16.34
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#!/usr/bin/perl

# Copyright © 2022 Felix Lechner <felix.lechner@lease-up.com>
#
# based on a shell script by the same name
#     Arjan Oosting <arjan@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

use v5.20;
use warnings;
use utf8;

use Const::Fast;
use List::SomeUtils qw(uniq);
use Path::Tiny;

use Debian::Debhelper::Buildsystem::Haskell::Recipes qw(run);
use Debian::Debhelper::Dh_Lib;

const my $EMPTY => q{};
const my $SPACE => q{ };
const my $COMMA => q{,};
const my $NEWLINE => qq{\n};

init();

my $version = run(qw{dpkg-query --showformat=${Version} --show hugs});
my $upstream_version = $version;

# strip Debian revision
$upstream_version =~ s{ - [^-]* $}{}x;

my @depends = ("hugs (>= $upstream_version)");

for my $installable (@{ $dh{DOPACKAGES} }) {

    my $substvars_path = "debian/$installable.substvars";

    # fix sort order
    local $ENV{LC_ALL} = 'C.UTF-8';

    replace_line($substvars_path, 'haskell:Depends',
        join($COMMA . $SPACE, (sort +uniq @depends)));
}

exit;

sub replace_line {
    my ($path, $field, $value) = @_;

    $value //= $EMPTY;

    path($path)->touch;

    my @lines = grep { !m{^ $field = }x } path($path)->lines_utf8;

    push(@lines, "$field=$value" . $NEWLINE);

    path($path)->spew_utf8(@lines);

    return;
}

=head1 NAME

dh_haskell_depends_hugs - store Haskell compiler info in substvars

=head1 SYNOPSIS

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

=head1 DESCRIPTION

dh_haskell_depends_hugs is a Debhelper program that Debian prerequisites for Haskell programs and libraries.

You can use it like this: C<${haskell:Depends}>

This script writes the debian/$package.substvars file, including in it the
haskell:Depends variable.  So, to use this package, include in the Depends:
field in debian/control ${haskell:Depends}.

=head1 SEE ALSO

L<debhelper(7)>

=head1 AUTHOR

John Goerzen <jgoerzen@complete.org>

Based on ideas in dh_python by Josselin Mouette <joss@debian.org>

=cut

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# cperl-indent-level: 4
# End:
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