File Coverage

Build.PL

Criterion	Covered	Total	%
statement	141	648	21.7
branch	22	332	6.6
condition	15	86	17.4
subroutine	30	82	36.5
pod			n/a
total	208	1148	18.1

#!/usr/bin/perl -w
# -*- perl -*-

#
# Author: Slaven Rezic
#
# Copyright (C) 2017,2018,2019,2020,2021,2022,2023,2024 Slaven Rezic. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
# Mail: [e-mail]
# WWW:  http://www.rezic.de/eserte/
#

use strict;
use FindBin;
use lib "$FindBin::RealBin/lib";

use Cwd qw(realpath getcwd);
use Digest::MD5 qw(md5_hex);
use File::Basename;
use Doit;
use Doit::Log;
use Doit::Util qw(in_directory get_os_release);

my $doit = Doit->init;

my $Build_PL_file_contents = do {
    open my $fh, '<', 'Build.PL'
	or error "Error opening Build.PL: $!";
    local $/ = undef;
    <$fh>;
};
my $Build_PL_md5hex = md5_hex $Build_PL_file_contents;

for my $argv_i (0 .. $#ARGV) {
    my $argv = $ARGV[$argv_i];
    if ($argv =~ /^[^-].*=.*/ && ($argv_i == 0 || $ARGV[$argv_i-1] !~ /^--?config$/)) { # looks like oldfashioned option without leading dash (e.g. "installdirs=vendor"), but not if following --config
	$argv =~ s/^/--/;
    }
}

my %action_with_arg_handling;

if (basename($0) eq 'Build.PL') {
    _Build_PL_mode();
}

# Check if Build is up-to-date (md5 check, no timestamp check)
{
    open my $fh, '<', $0
	or error "Can't open $0: $!";
    my $shebang = <$fh>;
    my $md5_line = <$fh>;
    if (my($old_md5hex) = $md5_line =~ m{^# MD5: (\S+)}) {
	if ($old_md5hex ne $Build_PL_md5hex) {
	    my $perl;
	    if (($perl) = $shebang =~ m{^#!\s*(.*)}) {
		# parsed it
	    } else {
		warning "Cannot parse perl interpreter path out of '$shebang', fallback to 'perl'";
		$perl = "perl";
	    }
	    error "Build.PL changed, please run '$perl Build.PL' again";
	}
    } else {
	error "Unexpected: no MD5 found in '$md5_line'";
    }
}

require Getopt::Long;
my %opt = (verbose => 0, uninst => 0, destdir => '', create_packlist => 1);
$Build_PL::ARGV=$Build_PL::ARGV if 0; # cease -w
@ARGV = (@$Build_PL::ARGV, @ARGV);
Getopt::Long::GetOptions(
    \%opt,
    'allow_mb_mismatch=i',
    'config=s%',
    'create_packlist=i',
    'destdir=s',
    'installdirs=s',
    'install_base=s',
    'install_path=s%',
    'jobs=i',
    'prefix=s',
    'pureperl-only:1',
    'uninst:1',
    'verbose:1',
    'versionlib=s',
    'version=s',
    # The following are just ignored, but currently set by cover
    'extra_compiler_flags=s',
    'extra_linker_flags=s',
)
    or error "usage: $0 [options]";

my $action = shift || 'build';
$action =~ s/-/_/g;
if (!$action_with_arg_handling{$action}) {
    if (@ARGV) {
	error "No arguments allowed for action '$action'";
    }
}

tie my %Config, 'CustomConfig', $opt{config};

{
    no strict 'refs';
    &$action;
}

sub build {
    build_libs();
    manifypods();
}

sub build_libs {
    $doit->make_path('blib/lib');
    $doit->make_path('blib/arch'); # not used, but keep ExtUtils::Install quiet
    require File::Find;
    my @pm_files;
    File::Find::find(sub { no warnings 'once'; push @pm_files, $File::Find::name if /\.(pm|pod)$/ && -f $_ }, "lib");
    my %seen_blib;
    for my $file (@pm_files) {
	my $dest = 'blib/'.$file;
	if (!-e $dest || -M $dest > -M $file) {
	    $doit->make_path(dirname($dest));
	    $doit->copy($file, $dest);
	}
	$seen_blib{$dest} = 1;
    }
    File::Find::find
	    ({
	      wanted => sub {
		  if (-f $_ && !$seen_blib{$File::Find::name}) {
		      warning "Stray file $File::Find::name found, removing...";
		      $doit->unlink($File::Find::name);
		  }
	      },
	      no_chdir => 1,
	     },
	     "blib/lib", "blib/arch",
	    );
}

sub manifypods {
    # Handles only Pods in .pod files (which is the case in the Doit distribution)
    require File::Find;
    require File::Glob;
    require Pod::Man;
    my $mansep = $^O =~ m{^(MSWin32|cygwin)$} ? '.' : '::';
    my %seen_blib_man;
    File::Find::find
	    ({
	      wanted => sub {
		  if (-f $_ && /\.pod$/) {
		      no warnings 'once';
		      my $pod = $File::Find::name;
		      my $section = 3; # no scripts yet, so we can hardcode here
		      my %options = (section => $section);
		      (my $man = $pod) =~ s{^lib.}{};
		      $man =~ s{/+}{$mansep}g;
		      $man =~ s{\.pod$}{.$Config{"man${section}ext"}};
		      $man = "blib/man$section/$man";
		      if (!-e $man || -M $man > -M $pod || -M $man > -M "Build") {
			  $doit->make_path(dirname($man));
			  my $parser = Pod::Man->new(%options);
			  if ($doit->is_dry_run) {
			      info "$pod -> $man (dry-run)";
			  } else {
			      info "$pod -> $man";
			      $parser->parse_from_file($pod, $man)
				  or error "Could not install $man";
			  }
			  $doit->chmod(0644, $man); # XXX should this be changeable? like $PERM_RW in Makefile.PL?
		      }
		      $seen_blib_man{$man} = 1;
		  }
	      },
	      no_chdir => 1,
	     },
	     "lib");
    File::Find::find
	    ({
	      wanted => sub {
		  if (-f $_ && !$seen_blib_man{$File::Find::name}) {
		      warning "Stray file $File::Find::name found, removing...";
		      $doit->unlink($File::Find::name);
		  }
	      },
	      no_chdir => 1,
	     },
	     File::Glob::bsd_glob("blib/man*")
	    );
}

sub clean {
    $doit->remove_tree('blib');
}

sub realclean { &clean }

BEGIN { $action_with_arg_handling{'test'} = 1 }
sub test {
    my $usage = sub { error(($_[0] ? "$_[0]\n" : "") . "usage: $0 test -- [--no-build] [file...]") };
    my $do_build = 1;
    Getopt::Long::GetOptions(
	'build!' => \$do_build,
    ) or $usage->();
    my @test_files = @ARGV; @ARGV = ();

    build() if $do_build;

    local $ENV{PERL_DL_NONLAZY} = 1;
    require File::Glob;
    require File::Spec;
    local $ENV{HARNESS_OPTIONS} = $ENV{HARNESS_OPTIONS};
    if ($opt{jobs} && (!defined $ENV{HARNESS_OPTIONS} || $ENV{HARNESS_OPTIONS} !~ /(^|:)j\d+($|:)/)) {
	$doit->setenv(HARNESS_OPTIONS => (defined $ENV{HARNESS_OPTIONS} && $ENV{HARNESS_OPTIONS} ne '' ? $ENV{HARNESS_OPTIONS} . ':' : '') . "j$opt{jobs}")
    }
    if (0) {
	$doit->system(_prove_path(), '-b', 't', @test_files); # use right perl?
    } else {
	if (!@test_files) {
	    @test_files = sort { lc $a cmp lc $b } File::Glob::bsd_glob(File::Spec->catfile("t", "*.t"));
	}
	if (0) {
	    $doit->system($^X, "-MExtUtils::Command::MM", "-MTest::Harness", "-e", 'undef *Test::Harness::Switches; test_harness(0, "blib/lib", "blib/arch")', @test_files);
	} else {
	    require Test::Harness;
	    if ($doit->is_dry_run) {
		info "test @test_files (dry-run)";
	    } else {
		local @INC = @INC;
		unshift @INC, map { File::Spec->rel2abs($_) } qw(blib/lib blib/arch);
		info "test @test_files";
		Test::Harness::runtests(@test_files);
	    }
	}
    }
}

sub test_xt {
    $doit->system(_prove_path(), '-b', ($opt{jobs} ? ('--jobs', $opt{jobs}) : ()), 'xt'); # use right perl?
}

sub test_installed {
    my $t_dir = "$FindBin::RealBin/t";
    chdir "/"
	or error "Cannot chdir to /: $!";
    $doit->system(_prove_path(), $t_dir);
}

BEGIN { $action_with_arg_handling{'test_in_docker'} = 1 }
sub test_in_docker {
    my $usage = sub { error(($_[0] ? "$_[0]\n" : "") . "usage: $0 test_in_docker -- [--more-testing] dockerimage:tag") };
    Getopt::Long::GetOptions(
	"more-testing!"     => \my $more_testing,
	"invalidate-cache!" => \my $do_invalidate_cache,
    ) or $usage->();
    my $distro_spec = shift @ARGV or $usage->("dockerimage:tag missing");
    @ARGV and $usage->("too many arguments");
    if (!$distro_spec || $distro_spec !~ m{^.*:.*$}) {
	$usage->("Please set dockerimage:tag argument to something like 'debian:bookworm'");
    }
    Doit::Log::set_label("[$distro_spec" . ($more_testing ? " (more)" : "") . "]");
    for my $tool (qw(docker)) {
	$doit->which($tool) or error "$tool is missing";
    }
    require File::Temp;
    my $dir = File::Temp::tempdir("Doit_test_in_docker_XXXXXXXX", TMPDIR => 1, CLEANUP => 1);
    my $dockerfile = <<"EOF";
FROM $distro_spec

EOF
    if ($do_invalidate_cache) {
	_add_Dockerfile_invalidate_cmd(\$dockerfile);
    }

    my $add_opts = {};
    $dockerfile .= _fix_Dockerfile_for_dist($distro_spec, $add_opts);
    _docker_add_distro_specific_files(dir => $dir, distro_spec => $distro_spec);
    if (-e "$dir/.distro_support") {
	$dockerfile .= <<'EOF';
COPY .distro_support .distro_support
RUN .distro_support/run.sh
EOF
    }

    if ($distro_spec =~ m{^(centos|rockylinux|fedora):}) {
	######################################################################
	# CentOS
	# From https://fedoraproject.org/wiki/EPEL/FAQ#How_can_I_install_the_packages_from_the_EPEL_software_repository.3F
	if      ($distro_spec eq 'centos:6') {
	    $dockerfile .= <<"EOF";
RUN rpm -Uvh https://dl.fedoraproject.org/pub/archive/epel/6/x86_64/epel-release-6-8.noarch.rpm
EOF
	} elsif ($distro_spec eq 'centos:7') {
	    $dockerfile .= <<"EOF";
RUN rpm -Uvh https://dl.fedoraproject.org/pub/archive/epel/7/x86_64/Packages/e/epel-release-7-14.noarch.rpm
EOF
	} elsif ($distro_spec eq 'rockylinux:8') {
	    $dockerfile .= <<"EOF";
RUN yum -y install epel-release
EOF
	} else {
	    info "No EPEL support for $distro_spec";
	}
	$dockerfile .= <<"EOF";
RUN yum -y install \\
    sudo \\
    rsync \\
    "perl(Digest::MD5)" \\
    "perl(ExtUtils::MakeMaker)" \\
    "perl(FindBin)" \\
    "perl(Hash::Util)" \\
    "perl(Sys::Hostname)" \\
    "perl(Test::More)" \\
    "perl(Tie::File)" \\
    make \\
    git

EOF
	if ($distro_spec eq 'centos:8') {
	    # Requires also PowerTools repo additionally to EPEL
	    $dockerfile .= <<"EOF";
RUN dnf -y install 'dnf-command(config-manager)'
RUN yum config-manager --set-enabled PowerTools
EOF
	} elsif ($distro_spec eq 'rockylinux:8') {
	    $dockerfile .= <<"EOF";
RUN dnf -y --enablerepo=powertools install perl-IPC-Run
EOF
	} elsif ($distro_spec eq 'rockylinux:9') {
	    $dockerfile .= <<"EOF";
RUN dnf -y --enablerepo=crb install perl-IPC-Run
EOF
	}
	$dockerfile .= <<"EOF";
RUN yum -y install \\
    "perl(IPC::Run)"
EOF
	if ($distro_spec ne 'centos:8' && $distro_spec ne 'rockylinux:8' && $distro_spec ne 'rockylinux:9') {
	    # Currently not available in CentOS8 and Rocky
	    $dockerfile .= <<"EOF";
RUN yum -y install \\
    "perl(Net::OpenSSH)"
EOF
	}
	if ($distro_spec eq 'centos:6') {
	    $dockerfile .= <<"EOF";
RUN curl -L https://cpanmin.us | perl - App::cpanminus

# Not available as an RPM
RUN cpanm --quiet --notest CPAN::Meta
EOF
	} else {
	    $dockerfile .= <<"EOF";
RUN yum -y install \\
    "perl(CPAN::Meta)"
EOF
	}
	if ($more_testing) {
	    $dockerfile .= <<"EOF";
RUN yum -y install \\
    "perl(Capture::Tiny)" \\
    "perl(Term::ANSIColor)" \\
    "perl(BSD::Resource)" \\
    "perl(CPAN::Meta::Validator)" \\
    "perl(LWP::UserAgent)" \\
    "perl(Config::IniFiles)" \\
    file

ENV GITHUB_ACTIONS 1
ENV DOIT_TEST_WITH_SUDO 1

EOF
	    if ($distro_spec eq 'centos:6') {
		$dockerfile .= <<"EOF";
# Term::ANSIColor exists, but is too old (no colorstrip function)
RUN cpanm --quiet --notest "Term::ANSIColor~>=2.01"

RUN yum -y install python34-pip

EOF
	    } else {
		$dockerfile .= <<"EOF";
RUN yum -y install python3-pip
EOF
	    }
	}
    } elsif ($distro_spec =~ m{^alpine(:|$)}) {
	$dockerfile .= <<"EOF";
RUN apk update
# perl-utils for prove
# shadow for useradd
RUN apk add sudo rsync git perl perl-utils make shadow
EOF
	if ($more_testing) {
	    $dockerfile .= <<"EOF";
RUN apk add py3-pip

#ENV GITHUB_ACTIONS 1
ENV DOIT_TEST_WITH_SUDO 1

EOF
	}

    } else {
	######################################################################
	# Debian-like (Debian, Ubuntu, LinuxMint ...)
	my $packages_spec;
	{
	    my @packages;
	    {
		push @packages, (
		    'libipc-run-perl',
		    ($distro_spec eq 'ubuntu:precise' ? () : 'libnet-openssh-perl'),
		    'sudo',
		    'rsync',
		    'git',
		);
	    }
	    if ($more_testing) {
		push @packages, (
		    'libbsd-resource-perl',
		    'libcapture-tiny-perl',
		    'libconfig-inifiles-perl',
		    'libcpan-meta-perl',
		    'libdevel-hide-perl',
		    'libwww-perl',
		    'perl-modules',
		    'locales',
		    'file',
		    ($distro_spec eq 'ubuntu:precise' ? () : 'python3-pip'),
		);
	    }
	    $packages_spec = join(" \\\n", map { "    $_" } @packages);
	}

	if ($distro_spec =~ m{^(ubuntu:precise)$}) {
	    # See https://gist.github.com/dergachev/f5da514802fcbbb441a1
	    $dockerfile .= <<'EOF'
RUN sed -i.bak -r 's/(archive|security).ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
EOF
	}
	$dockerfile .= <<"EOF";
ENV DEBIAN_FRONTEND noninteractive

RUN apt-get$add_opts->{apt_get_update_opts} update && apt-get install -y --no-install-recommends$add_opts->{apt_get_install_opts} \\
$packages_spec

EOF
	if ($more_testing) {
	    $dockerfile .= <<"EOF";
ENV GITHUB_ACTIONS 1
ENV DOIT_TEST_WITH_SUDO 1

EOF
	}
    }

    for my $env_key (qw(HARNESS_OPTIONS)) {
	if (defined $ENV{$env_key}) {
	    $dockerfile .= <<"EOF";
ENV $env_key "$ENV{$env_key}"
EOF
	}
    }

    $doit->write_binary("$dir/Dockerfile", $dockerfile);
    in_directory {
	(my $tag = $distro_spec) =~ s{:}{-}g;
	$tag = 'doit-test-' . $tag;
	$doit->system(qw(docker build -t), $tag, qw(.));
	$doit->system(
		      qw(docker run), '-v', "$FindBin::RealBin:/data:ro", $tag,
		      'sh', '-c', 'rsync -a --no-owner --no-group --exclude=blib "--exclude=Doit-*.tar.gz" /data/ /tmp/Doit/ && cd /tmp/Doit && perl Build.PL && ./Build && ./Build generate_META_json && ./Build test && ./Build test_xt && ./Build dist_install_and_test'
		     );
    } $dir;

    Doit::Log::set_label(undef);
}

BEGIN { $action_with_arg_handling{'test_package_in_docker'} = 1 }
sub test_package_in_docker { # XXX Currently only support for deb packages
    my $usage = sub { error(($_[0] ? "$_[0]\n" : "") . "usage: $0 test_package_in_docker -- --package package.deb dockerimage:tag") };
    Getopt::Long::GetOptions(
	"package=s"     => \my $package,
    ) or $usage->();
    $package or $usage->("--package is mandatory");
    my $distro_spec = shift @ARGV or $usage->("dockerimage:tag missing");
    @ARGV and $usage->("too many arguments");
    if (!$distro_spec || $distro_spec !~ m{^.*:.*$}) {
	$usage->("Please set dockerimage:tag argument to something like 'debian:bookworm'");
    }
    Doit::Log::set_label("[$distro_spec]");
    for my $tool (qw(docker)) {
	$doit->which($tool) or error "$tool is missing";
    }
    require File::Temp;
    my $dir = File::Temp::tempdir("Doit_test_in_docker_XXXXXXXX", TMPDIR => 1, CLEANUP => 1);
    $doit->copy($package, $dir);
    my $package_basename = basename($package);
    my $dockerfile = <<"EOF";
FROM $distro_spec

COPY $package_basename /tmp/$package_basename
EOF
    my $add_opts = {};
    $dockerfile .= _fix_Dockerfile_for_dist($distro_spec, $add_opts);

    $dockerfile .= <<"EOF";
ENV DEBIAN_FRONTEND noninteractive
RUN apt-get$add_opts->{apt_get_update_opts} update && \\
    apt-get install -y --no-install-recommends$add_opts->{apt_get_install_opts} /tmp/$package_basename && \\
    apt-get install -y --no-install-recommends$add_opts->{apt_get_install_opts} rsync
EOF

    $doit->write_binary("$dir/Dockerfile", $dockerfile);
    in_directory {
	$doit->system(qw(docker build -t doit-test .));
	$doit->system(
		      qw(docker run), '-v', "$FindBin::RealBin:/data:ro", 'doit-test',
		      'sh', '-c', 'rsync -a --no-owner --no-group --exclude=blib "--exclude=Doit-*.tar.gz" /data/ /tmp/Doit/ && cd /tmp/Doit && perl Build.PL && ./Build test'
		     );
    } $dir;

    Doit::Log::set_label(undef);
}

# Run docker-based tests on a number of Linux distributions:
# the stable ones of Debian, Ubuntu and CentOS, and some
# older versions of these distributions.
sub test_standard {
    Doit::Log::set_label("[local]");
    $doit->system($^X, 'Build.PL');
    $doit->system('./Build');
    $doit->system('./Build', 'test');
    Doit::Log::set_label(undef);
    my @results;
    for my $distro_spec ('debian:bookworm', 'ubuntu:jammy', 'debian:bullseye', 'ubuntu:focal', 'debian:buster', 'ubuntu:bionic', 'centos:7', 'debian:stretch', 'debian:jessie', 'ubuntu:xenial', 'ubuntu:precise', 'centos:6', 'alpine:latest') {
	for my $more_testing (0, 1) {
	    my $t0 = time; # currently not hires, should be fine for now
	    $doit->system('./Build', 'test_in_docker', '--', ($more_testing ? '--more-testing' : ()), $distro_spec);
	    my $t1 = time;
	    push @results, { distro => $distro_spec, more_testing => $more_testing, result => 'pass', time => ($t1-$t0)."s" };
	}
    }

    my $report = "test_standard results\n";
    my @cols = qw(distro more_testing result time);
    my @col_widths;
    for my $col (@cols) {
	my $max_width;
	for my $result (@results) {
	    my $width = length $result->{$col};
	    $max_width = $width if !defined $max_width || $max_width < $width;
	}
	push @col_widths, $max_width;
    }
    for my $result (@results) {
	for my $col_i (0 .. $#cols) {
	    $report .= sprintf "%-${col_widths[$col_i]}s ", $result->{$cols[$col_i]};
	}
	$report .= "\n";
    }
    info $report;
}

sub test_kwalitee (;$) {
    my($distdir) = @_;
    # If cwd is used then more tests fail,
    # because META files are not available here.
    $distdir = $FindBin::RealBin if !defined $distdir;

    if (eval { require Test::Kwalitee; 1 }) {
	in_directory {
	    local $ENV{RELEASE_TESTING} = 1;
	    eval { $doit->system($^X, '-MTest::More', '-MTest::Kwalitee=kwalitee_ok', '-e', 'kwalitee_ok(qw(-has_manifest -has_meta_yml)); done_testing') };
	} $distdir;
    } else {
	warning "Test::Kwalitee is not installed";
    }
}

sub test_pod (;$) {
    my($distdir) = @_;
    $distdir = $FindBin::RealBin if !defined $distdir;

    if (eval { require Test::Pod; 1 }) {
	in_directory {
	    eval { $doit->system($^X, '-MTest::Pod', '-e', 'all_pod_files_ok()') };
	} $distdir;
    } else {
	warning "Test::Pod is not installed";
    }
}

sub test_cpan_versions {
    my($distdir) = @_;

    if ($doit->which("cpan_check_versions")) {
	in_directory {
	    $doit->system('cpan_check_versions', '-remote');
	} $distdir;
    } else {
	warning <
No cpan_check_versions found in PATH, cannot check for properly
incremented VERSIONs. Please check git://github.com/eserte/srezic-misc.git
EOF
    }
}

sub git_checks {
    _check_clean_git();

    my $Doit_VERSION = _get_Doit_VERSION();

    my $out = $doit->info_qx(qw(git tag -l), $Doit_VERSION);
    if (defined $out && $out ne '') {
	error "A git tag $Doit_VERSION already exists";
    }
}

sub distdir {
    my(%options) = @_;
    my $temporary = delete $options{temporary};
    error "Unhandled options: " . join(" ", %options) if %options;

    require File::Temp;
    my $tempdir = File::Temp::tempdir("Doit_distdir_XXXXXXXX", TMPDIR => 1, CLEANUP => $temporary);
    my $Doit_VERSION = _get_Doit_VERSION();
    my $distdir = "$tempdir/Doit-$Doit_VERSION";
    $doit->mkdir($distdir);
    for my $line (split /\0/, $doit->info_qx({quiet=>1}, 'git', 'ls-files', '-z')) {
	next if ($line =~ m{^(   \.travis\.yml
			     |   \.?appveyor\.yml
			     |   \.github/.*
			     |   \.gitignore
			     )$}x);
	# XXX maybe implement also MANIFEST.SKIP?
	my $dirname = dirname $line;
	if ($dirname ne '.') {
	    $doit->make_path("$distdir/$dirname");
	}
	$doit->copy($line, "$distdir/$dirname/");
    }

    generate_META_json("$distdir/META.json");
    generate_META_yml("$distdir/META.yml" );

    test_kwalitee($distdir);
    test_pod($distdir);

    # If not temporary, then it is assumed that the
    # interactive distdir action is called, and
    # provide information to the user.
    if (!$temporary) {
	info "Distribution directory is $distdir";
    }

    $distdir;
}

sub dist {
    if (!$ENV{DOIT_TEST_SKIP_SOME_CHECKS}) {
	git_checks();
    }
    # else skip because Doit version is usually not incremented in
    # this phase and the git tag already exists


    my $tarfile = _get_tarfilename();
    if (-e $tarfile) {
	error "$tarfile already exists";
    }
    my $distdir = distdir(temporary => 1);

    if (!$ENV{DOIT_TEST_SKIP_SOME_CHECKS}) {
	test_cpan_versions($distdir);
    }
    # else because versions of all Doit modules are usually not
    # incremented in this phase

    in_directory {
	# Note: tar cfvz C:/... ... does not seem to work on Windows
	# (for all or some tar versions?). Error message is:
	#     tar (child): Cannot connect to C: resolve failed
	# So create in cwd first, and move to final location.
	$doit->system('tar', 'cfvz', basename($tarfile), basename($distdir));
	$doit->move(basename($tarfile), $tarfile);
    } "$distdir/..";
}

sub dist_install_and_test {
    local $ENV{DOIT_TEST_SKIP_SOME_CHECKS} = 1; # XXX is there a better interface?
    my $tarfile = _get_tarfilename();
    if (!-e $tarfile) {
	dist();
    }
    require File::Temp;
    my $dir = File::Temp::tempdir("Doit_dist_install_and_test_XXXXXXXX", TMPDIR => 1, CLEANUP => 1);
    my $Doit_VERSION = _get_Doit_VERSION();
    in_directory {
	# Note: see above for tar under Windows problems
	$doit->move($tarfile, basename($tarfile));
	$doit->system('tar', 'xfz', basename($tarfile));
	in_directory {
	    $doit->system($^X, 'Build.PL');
	    my @Build = $^O eq 'MSWin32' ? ($^X, 'Build') : ('./Build');
	    my @sudo = $^O eq 'MSWin32' ? () : ('sudo');
	    $doit->system(@Build);
	    $doit->system(@Build, 'test');
	    $doit->system(@sudo, @Build, 'install');
	    $doit->system(@Build, 'test-installed');
	} "Doit-$Doit_VERSION";
    } $dir;
}

sub dist_install_with_cpanm {
    my $tarfile = _get_tarfilename();
    if (!-e $tarfile) {
	dist();
    }
    $doit->system('cpanm', $tarfile);
    test_installed();
}

sub look {
    my $distdir = distdir(temporary => 1);
    in_directory {
	info "Spawning $ENV{SHELL} in $distdir...";
	local $ENV{DOIT_BUILD_SHELL_LEVEL} = $ENV{DOIT_BUILD_SHELL_LEVEL};
	$ENV{DOIT_BUILD_SHELL_LEVEL}++;
	$doit->system($ENV{SHELL});
    } $distdir;
}

BEGIN { $action_with_arg_handling{'cover'} = 1 }
sub cover {
    my(@files) = @ARGV;
    if (@files) {
	for my $file (@files) {
	    $doit->system($^X, '-MDevel::Cover', $file);
	}
    } else {
	$doit->system(_cover_path(), '--test');
    }
    $doit->unlink('MYMETA.json.lock'); # https://github.com/pjcj/Devel--Cover/issues/263
}

BEGIN { $action_with_arg_handling{'show_cover'} = 1 }
sub show_cover {
    Getopt::Long::GetOptions(
	'show-only' => \my $show_only,
    ) or error "usage: $0 show_cover -- --show-only [file ...]";
    my @files = @ARGV;
    if (@files && $show_only) { error "Cannot specify --show-only together with list of files" }
    if ($show_only) {
	$doit->system(_cover_path());
    } else {
	cover(@files);
    }
    my $browser = $^O eq 'darwin' ? 'open' : $doit->which('xdg-open') ? 'xdg-open' : 'firefox';
    $doit->system($browser, "$FindBin::RealBin/cover_db/coverage.html");
}

sub install {
    build();
    # XXX check if test suite was run?

    # MOD_INSTALL = $(ABSPERLRUN) -MExtUtils::Install -e 'install([ from_to => {@ARGV}, verbose => '\''$(VERBINST)'\'', uninstall_shadows => '\''$(UNINST)'\'', dir_mode => '\''$(PERM_DIR)'\'' ]);' --
    # $(MOD_INSTALL) \

    # for a perl install:
    # 		read "$(PERL_ARCHLIB)/auto/$(FULLEXT)/.packlist" \
    # 		write "$(DESTINSTALLARCHLIB)/auto/$(FULLEXT)/.packlist" \
    # 		"$(INST_LIB)" "$(DESTINSTALLPRIVLIB)" \
    # 		"$(INST_ARCHLIB)" "$(DESTINSTALLARCHLIB)" \
    # 		"$(INST_BIN)" "$(DESTINSTALLBIN)" \
    # 		"$(INST_SCRIPT)" "$(DESTINSTALLSCRIPT)" \
    # 		"$(INST_MAN1DIR)" "$(DESTINSTALLMAN1DIR)" \
    # 		"$(INST_MAN3DIR)" "$(DESTINSTALLMAN3DIR)"

    # for a site install:
    #           read "$(SITEARCHEXP)/auto/$(FULLEXT)/.packlist" \
    #           write "$(DESTINSTALLSITEARCH)/auto/$(FULLEXT)/.packlist" \
    #           "$(INST_LIB)" "$(DESTINSTALLSITELIB)" \
    #           "$(INST_ARCHLIB)" "$(DESTINSTALLSITEARCH)" \
    #           "$(INST_BIN)" "$(DESTINSTALLSITEBIN)" \
    #           "$(INST_SCRIPT)" "$(DESTINSTALLSITESCRIPT)" \
    #           "$(INST_MAN1DIR)" "$(DESTINSTALLSITEMAN1DIR)" \
    #           "$(INST_MAN3DIR)" "$(DESTINSTALLSITEMAN3DIR)"

    require Data::Dumper;
    require ExtUtils::Install;
    my $FULLEXT = 'Doit';
    my $INST_LIB = 'blib/lib';
    my $INST_ARCHLIB = 'blib/arch';
    my $INST_BIN = 'blib/bin';
    my $INST_SCRIPT = 'blib/script';
    my $INST_MAN1DIR = 'blib/man1';
    my $INST_MAN3DIR = 'blib/man3';
    my $PERM_DIR = '755';
    my @euii_args = (
	from_to => {
	    (
		$opt{install_base}
		?
		(
		    read          => "$Config{sitearchexp}/auto/$FULLEXT/.packlist",
		    ($opt{create_packlist} ? (write => "$opt{install_base}/lib/perl5/$Config{archname}/auto/$FULLEXT/.packlist") : ()),
		    $INST_LIB     => "$opt{install_base}/lib/perl5",
		    $INST_ARCHLIB => "$opt{install_base}/lib/perl5",
		    $INST_BIN     => "$opt{install_base}/bin",
		    $INST_SCRIPT  => "$opt{install_base}/bin",
		    $INST_MAN1DIR => "$opt{install_base}/man/man1",
		    $INST_MAN3DIR => "$opt{install_base}/man/man3",
		)
	        :
		($opt{installdirs}||'') eq 'core'
		?
		(
		    read          => "$Config{archlib}/auto/$FULLEXT/.packlist",
		    ($opt{create_packlist} ? (write => "$opt{destdir}$Config{installarchlib}/auto/$FULLEXT/.packlist") : ()),
		    $INST_LIB     => "$opt{destdir}$Config{installprivlib}",
		    $INST_ARCHLIB => "$opt{destdir}$Config{installarchlib}",
		    $INST_BIN     => "$opt{destdir}$Config{installbin}",
		    $INST_SCRIPT  => "$opt{destdir}$Config{installscript}",
		    ($Config{installman1dir} ? ($INST_MAN1DIR => "$opt{destdir}$Config{installman1dir}") : ()),
		    ($Config{installman3dir} ? ($INST_MAN3DIR => "$opt{destdir}$Config{installman3dir}") : ()),
		)
		:
		($opt{installdirs}||'') eq 'vendor'
		?
		(
		    read          => "$Config{vendorlib}/auto/$FULLEXT/.packlist",
		    ($opt{create_packlist} ? (write => "$opt{destdir}$Config{installvendorarch}/auto/$FULLEXT/.packlist") : ()),
		    $INST_LIB     => "$opt{destdir}$Config{installvendorlib}",
		    $INST_ARCHLIB => "$opt{destdir}$Config{installvendorarch}",
		    $INST_BIN     => "$opt{destdir}$Config{installvendorbin}",
		    $INST_SCRIPT  => "$opt{destdir}$Config{installvendorscript}",
		    ($Config{installvendorman1dir} ? ($INST_MAN1DIR => "$opt{destdir}$Config{installvendorman1dir}") : ()),
		    ($Config{installvendorman3dir} ? ($INST_MAN3DIR => "$opt{destdir}$Config{installvendorman3dir}") : ()),
		)
		: # default is site
		(
		    read          => "$Config{sitearchexp}/auto/$FULLEXT/.packlist",
		    ($opt{create_packlist} ? (write => "$opt{destdir}$Config{installsitearch}/auto/$FULLEXT/.packlist") : ()),
		    $INST_LIB     => "$opt{destdir}$Config{installsitelib}",
		    $INST_ARCHLIB => "$opt{destdir}$Config{installsitearch}",
		    $INST_BIN     => "$opt{destdir}$Config{installsitebin}",
		    $INST_SCRIPT  => "$opt{destdir}$Config{installsitescript}",
		    ($Config{installsiteman1dir} ? ($INST_MAN1DIR => "$opt{destdir}$Config{installsiteman1dir}") : ()),
		    ($Config{installsiteman3dir} ? ($INST_MAN3DIR => "$opt{destdir}$Config{installsiteman3dir}") : ()),
		)
	    )
	},
	verbose           => $opt{verbose},
	uninstall_shadows => $opt{uninst},
	dir_mode          => $PERM_DIR,
	dry_run           => $doit->is_dry_run,
    );
    my $euii_args_dump = Data::Dumper->new([{ @euii_args }],[qw()])->Indent(1)->Useqq(1)->Sortkeys(1)->Terse(1)->Dump;
    info "Run ExtUtils::Install::install with parameters\n" . $euii_args_dump;
    ExtUtils::Install::install([@euii_args]);
    if ($doit->is_dry_run) {
	info "(this was dry-run mode)";
    }
}

{
    my $Doit_VERSION;

    sub _get_Doit_VERSION () {
	return $Doit_VERSION if defined $Doit_VERSION;

	{
	    my $Doit_pm = $INC{"Doit.pm"};
	    open my $fh, $Doit_pm or die "Cannot open $Doit_pm: $!";
	    while(<$fh>) {
		if (/\$VERSION\s*=\s*'(.*)'/) {
		    $Doit_VERSION = $1;
		    last;
		}
	    }
	    if (!defined $Doit_VERSION) {
		error "Fatal: Cannot find \$VERSION in $Doit_pm";
	    }
	}
	if ($Doit_VERSION !~ m{^\d+\.[\d_]+$}) {
	    error "Doit.pm VERSION $Doit_VERSION does not look as expected";
	}
	# Check also for numerical value of version
	if (!defined $Doit::VERSION) {
	    error "Unexpected: cannot find \$VERSION in loaded Doit.pm";
	}
	{
	    (my $Doit_numerical_version = $Doit_VERSION) =~ s{_}{}g;
	    if ($Doit_numerical_version != $Doit::VERSION) {
		error "Unexpected: parsed version $Doit_VERSION is not numerically equal to loaded version $Doit::VERSION";
	    }
	}
	$Doit_VERSION;
    }
}

sub _get_tarfilename () {
    my $Doit_VERSION = _get_Doit_VERSION();
    getcwd . "/Doit-" . $Doit_VERSION . ".tar.gz";
}

sub _generate_META ($;$) {
    my($destfile, $meta_version) = @_;

    require CPAN::Meta;
    require ExtUtils::MakeMaker;
    my $meta = CPAN::Meta->new({
	name     => 'Doit',
	author   => 'Slaven Rezic ',
	abstract => 'a scripting framework',
	license  => 'perl',
	version  => MM->parse_version("$FindBin::RealBin/lib/Doit.pm"),
	dynamic_config => 0,
	prereqs  => {
	    configure => {
		requires => {
		    'Digest::MD5' => 0,
		    'Exporter'    => 5.57, # use Exporter "import"
		    'File::Path'  => 2.0,  # make_path
		},
	    },
	    runtime => {
		recommends => {
		    'IPC::Run'     => 0,
		    'Net::OpenSSH' => 0,
		},
		requires => {
		    'perl'        => 5.006,
		    'Exporter'    => 5.57, # use Exporter "import"
		    'File::Path'  => 2.07, # make_path
		},
	    },
	    test => {
		requires => {
		    'Test::More' => 0,
		},
	    },
	},
	resources => {
	    repository => { url => 'git://github.com/eserte/Doit' },
	},
	generated_by => "Doit version " . _get_Doit_VERSION(),
    });
    if ($doit->is_dry_run) {
	info "Would create $destfile" . (defined $meta_version ? " (version $meta_version)" : "") . " (dry-run)";
    } else {
	$meta->save($destfile, (defined $meta_version ? { version => $meta_version } : ()));
    }
}

sub generate_META_json (;$) {
    my $destfile = shift || 'META.json';
    _generate_META $destfile;
}

sub generate_META_yml (;$) {
    my $destfile = shift || 'META.yml';
    _generate_META $destfile, 1.4;
}

# XXX the debian package build functionality should go into
# a separate Doit component

sub debian_package {
    _debian_package('--depends' => 'perl, libnet-openssh-perl, libipc-run-perl', '--add-distro-version' => '1');
}

sub _debian_package {
    my(%opts) = @_;

    for my $tool (qw(dh-make-perl)) { # git is checked if needed
	$doit->which($tool) or error "$tool is missing";
    }

    my $distdir = distdir(temporary => 1);

    my $version = delete $opts{'--version'};
    my $add_distro_version = delete $opts{'--add-distro-version'};
    if (!defined $version) {
	$version = _basic_debian_version();
	if ($add_distro_version) {
	    my $osr = get_os_release();
	    if (!$osr) {
		error 'Cannot read /etc/os-release --- please specify --version manually';
	    }
	    my $dist_id = $osr->{ID};
	    my $rel = $osr->{VERSION_ID};
	    if ($dist_id eq 'debian') {
		$rel =~ s{^(\d+).*}{$1};
		$version .= "+deb${rel}u${add_distro_version}";
	    } elsif ($dist_id eq 'linuxmint') {
		$version .= "+linuxmint${rel}u${add_distro_version}";
	    } elsif ($dist_id eq 'ubuntu') {
		$version .= "~ubuntu${rel}.${add_distro_version}";
	    } else {
		error "No distro version support for '$dist_id'";
	    }
	}
    }

    my $deb;
    in_directory {
	$doit->system(qw(dh-make-perl --build --vcs none), (defined $version ? ('--version', $version) : ()), %opts);
	require File::Glob;
	my(@debs) = File::Glob::bsd_glob("$distdir/../*.deb");
	if (@debs != 1) {
	    error "Expecting exactly one generated .deb, but got: <@debs>\n";
	}
	$deb = $debs[0];
    } $distdir;
    $doit->copy($deb, basename($deb));
    print basename($deb), "\n";
}

sub _basic_debian_version {
    my $version;
    $doit->which('git') or error 'git is missing --- please install it or alternatively specify --version manually';
    chomp(my $git_describe = eval { $doit->info_qx('git', 'describe') }); # XXX what if this fails? Optionally made fatal?
    if (defined $git_describe) {
	if ($git_describe =~ m{^([0-9\._]+)$}) {
	    $version = $1;
	} elsif ($git_describe =~ m{^([0-9\._]+)-(\d+)-g(.*)}) {
	    $version = $1."+git".$2."+".$3."-1"; # XXX make "1" configurable?
	} else {
	    error "Cannot parse output from git describe: '$git_describe'";
	}
	$version =~ s{_}{-}; # replace "devel" version specifier
    } else {
	error "No information using git-describe available. Please specify --version manually.";
    }
    $version;
}

BEGIN { $action_with_arg_handling{'debian_package_with_docker'} = 1 }
sub debian_package_with_docker {
    my $usage = sub { error(($_[0] ? "$_[0]\n" : "") . "usage: $0 debian_package_with_docker -- [--use-workdir | --tag ...] dockerimage:tag") };
    Getopt::Long::GetOptions(
	"use-workdir!" => \my $use_workdir,
	"tag=s"        => \my $tag,
    ) or $usage->();
    $tag && $use_workdir and $usage->("Cannot use --use-workdir together with --tag");
    my $distro_spec = shift @ARGV or $usage->("dockerimage:tag missing");
    @ARGV and $usage->("too many arguments");
    if ($distro_spec eq 'self') {
	$distro_spec = join ":", @{ get_os_release() }{qw(ID VERSION_CODENAME)};
    }
    if (!$distro_spec || $distro_spec !~ m{^.*:.*$}) {
	$usage->("Please set dockerimage:tag argument to something like 'debian:bookworm' or 'self'");
    }
    for my $tool (qw(docker)) {
	$doit->which($tool) or error "$tool is missing";
    }

    # Cannot access directories outside of /Users when working
    # with docker-machine @ Mac, see for an explanation:
    # https://stackoverflow.com/questions/37673140/docker-volume-located-in-tmp-on-osx-empty
    my $limited_volume_availability = $^O eq 'darwin';

    require File::Temp;
    my $dir = File::Temp::tempdir("Doit_debian_package_docker_XXXXXXXX", TMPDIR => !$limited_volume_availability, CLEANUP => 1);
    $dir = realpath $dir; # docker volumes have to be specified with absolute paths

    my $pkgdir = $limited_volume_availability ? "$FindBin::RealBin/pkg" : "/tmp";
    if (!-d $pkgdir) {
	$doit->mkdir($pkgdir);
    }

    if ($use_workdir) {
	# no --cvs-exclude --- git-describe has to work
	$doit->system('rsync', '-a', '--exclude=blib', '.', $dir);
    } else {
	$doit->add_component('git');
	$doit->git_repo_update(
	    repository => $FindBin::RealBin,
	    directory  => $dir,
	    ($tag ? (branch => $tag) : ()),
	    # no: we need the full history for correct git version calculation: clone_opts => [qw(--depth=1)],
	);
    }
    in_directory {
	my $dockerfile = <<"EOF";
FROM $distro_spec
EOF
	my $add_opts = {};
	$dockerfile .= _fix_Dockerfile_for_dist($distro_spec, $add_opts);
	$dockerfile .= <<"EOF";

ENV DEBIAN_FRONTEND noninteractive

RUN apt-get$add_opts->{apt_get_update_opts} update && apt-get$add_opts->{apt_get_install_opts} install -y --no-install-recommends \\
    dh-make-perl \\
    git

# XXX This is depending on the current perl module and should be configurable
RUN apt-get$add_opts->{apt_get_install_opts} install -y --no-install-recommends \\
    libipc-run-perl \\
    libnet-openssh-perl

EOF
	for my $env_key (qw(DEBFULLNAME DEBEMAIL EMAIL)) {
	    if ($ENV{$env_key}) {
		$dockerfile .= <<"EOF";
ENV $env_key "$ENV{$env_key}"
EOF
	    }
	}
	$doit->write_binary("Dockerfile", $dockerfile);

	(my $label = $distro_spec) =~ s{:}{-}g;
	$label = "doit-deb-$label";
	$doit->system(qw(docker build -t), $label, qw(.));
	$doit->system(
		      qw(docker run), '-v', "$dir:/data", '-v', "$pkgdir:/pkg", $label,
		      'sh', '-c', 'git config --global --add safe.directory /data && cd /data && perl Build.PL && ./Build debian_package && cp *.deb /pkg'
		     );
    } $dir;
    info "Package is available in $pkgdir";
}

sub release {
    my $Doit_VERSION = _get_Doit_VERSION();
    for my $existing_tag (split /\n/, $doit->info_qx({quiet=>1}, 'git', 'tag')) {
	if ($Doit_VERSION eq $existing_tag) {
	    error "The version $Doit_VERSION is already tagged --- probably the release was already done";
	}
    }

 FIND_VERSION: {
	open my $cfh, '<', 'Changes'
	    or error "Can't open Changes: $!";
	while(<$cfh>) {
	    if (/^\Q$Doit_VERSION\E\s/) {
		last FIND_VERSION;
	    }
	}
	error "Cannot find version $Doit_VERSION in Changes";
    }

    $doit->system('git', 'fetch');

    $doit->add_component('git');
    my $git_status = $doit->git_short_status;
    if ($git_status ne '' && $git_status ne '<') {
	error "Please check the git status";
    }

    # XXX TODO: check first if the current version already exists at CPAN
    my $tarfile = _get_tarfilename();
    if (!-e $tarfile) {
        dist();
    } else {
	info "Use existing tarball $tarfile";
    }

    print STDERR "Upload $tarfile? (y/n) ";
    if (!y_or_n()) {
	error "exiting release process";
    }

    $doit->system('cpan-upload', basename($tarfile));

    $doit->system('git', 'tag', '-a', '-m', "* $Doit_VERSION", $Doit_VERSION);
    $doit->system('git', 'push', 'origin', 'master', $Doit_VERSION);
}

sub ci_precheck {
    my @ci_systems = ('github-actions', 'appveyor');

    _check_clean_git();

    for my $ci_system (@ci_systems) {
	$doit->system('git', 'push', 'origin', "+HEAD:XXX-${ci_system}");
    }

    # check-ci is available here: https://github.com/eserte/srezic-misc/blob/master/scripts/check-ci
    $doit->system('check-ci', (map { "--$_" } @ci_systems));
}

sub _prove_path {
    my @directory_candidates = ($Config{bin}, dirname(realpath $^X));
    my @basename_candidates = ('prove', "prove$Config{version}");
    my @candidates = map {
	my $basename = $_;
	map {
	    "$_/$basename";
	} @directory_candidates;
    } @basename_candidates;
    if ($^O eq 'MSWin32') {
	unshift @candidates, map { "$_.bat"} @candidates;
    }
    for my $candidate (@candidates) {
	if (-x $candidate) {
	    return $candidate;
	}
    }
    error "No 'prove' for the current perl found";
}

sub _cover_path {
    my @candidates = ("$Config{bin}/cover");
    if ($^O eq 'MSWin32') {
	unshift @candidates, map { "$_.bat"} @candidates;
    }
    for my $candidate (@candidates) {
	if (-x $candidate) {
	    return $candidate;
	}
    }
    error "No 'cover' for the current perl found";
}

sub _Build_PL_mode {
    tie my %Config, 'CustomConfig'; # no options here!

    if ($ENV{PERL_MB_OPT}) {
	require Text::ParseWords;
	push @ARGV, Text::ParseWords::shellwords($ENV{PERL_MB_OPT});
    }

    require Data::Dumper;
    my $argv_serialized = "\n" . '$Build_PL::ARGV = ' . Data::Dumper->new([\@ARGV], [])->Indent(1)->Useqq(1)->Sortkeys(1)->Terse(1)->Dump . ";\n\n";
    {
	if (-l "Build") { # formerly this used to be a symlink
	    $doit->unlink("Build");
	}
	my $preamble = <<"EOF";
#! $Config{perlpath}
# MD5: $Build_PL_md5hex
EOF
	$preamble .= $argv_serialized;
	$doit->write_binary({quiet=>1}, 'Build', $preamble . qq{# line 1 "Build.PL"\n} . $Build_PL_file_contents);
	$doit->chmod(0755, 'Build');

	eval {
	    generate_META_json("MYMETA.json");
	    generate_META_yml("MYMETA.yml" );
	};
	warning "Failure while generating MYMETA.* files, continue without.\nError was:\n$@" if $@;
    }
    exit;
}

# Return a string for adding to Dockerfile after the FROM line. Also
# the 2nd parameter (which has to be an empty hashref) is filled with
# further instructions to amend the Dockerfile (currently only
# apt_get_update_opts).
sub _fix_Dockerfile_for_dist {
    my($distro_spec, $add_opts_ref) = @_;
    if ($distro_spec =~ m{^debian:(wheezy|jessie|stretch|7|8|9)$}) {
	my $codename = $1;
	if    ($codename eq '7') { $codename = 'wheezy' }
	elsif ($codename eq '8') { $codename = 'jessie' }
	elsif ($codename eq '9') { $codename = 'stretch' }
	# https://unix.stackexchange.com/questions/508724/failed-to-fetch-jessie-backports-repository
	$add_opts_ref->{apt_get_update_opts}  = ' -o Acquire::Check-Valid-Until=false';
	# https://askubuntu.com/questions/74345/how-do-i-bypass-ignore-the-gpg-signature-checks-of-apt
	$add_opts_ref->{apt_get_install_opts} = ' -o APT::Get::AllowUnauthenticated=true';
	<
RUN echo 'deb [check-valid-until=no] http://archive.debian.org/debian $codename main'                   >  /etc/apt/sources.list
RUN echo 'deb [check-valid-until=no] http://archive.debian.org/debian-security/ $codename/updates main' >> /etc/apt/sources.list
EOF
    } elsif ($distro_spec =~ m{^perl:(5\.18\.\d+|.*stretch)$}) { # XXX add more perl versions based on jessie/stretch/... containers
	# docker perl images are based on debian base images; older
	# ones need patching
	$add_opts_ref->{apt_get_install_opts} = ' -o APT::Get::AllowUnauthenticated=true';
	<<'EOF';
RUN perl -i -pe \
    's{deb http://(?:http.debian.net|deb.debian.org)/debian (\S+) main}{deb [check-valid-until=no] http://archive.debian.org/debian $1 main}; \
     s{deb http://security.debian.org.* ([^/]+)/updates main}{deb [check-valid-until=no] http://archive.debian.org/debian-security/ $1/updates main}; \
     $_ = "" if m{^deb .*-updates main}; \
    ' /etc/apt/sources.list
EOF
    } else {
	$add_opts_ref->{apt_get_update_opts} = '';
	$add_opts_ref->{apt_get_install_opts} = '';
	'';
    }
}

sub _add_Dockerfile_invalidate_cmd {
    my $dockerfile_ref = shift;
    require POSIX;
    $$dockerfile_ref .= <<"EOF";
# Just a hack to make sure that the following lines
# are executed at least once a day
RUN echo @{[ POSIX::strftime("%F", localtime) ]}
EOF
}

sub _docker_add_distro_specific_files {
    my %opts = @_;
    my $dir         = delete $opts{dir}         || die 'Please specify dir';
    my $distro_spec = delete $opts{distro_spec} || die 'Please specify distro_spec';
    die 'Unhandled options: ' . join(' ', %opts) if %opts;

    if ($distro_spec eq 'centos:6' || $distro_spec eq 'centos:7') {
	$doit->mkdir("$dir/.distro_support");
	# Instructions from https://gcore.de/de/hilfe/linux/centos6-repo-nach-eol-anpassen.php
	if ($distro_spec eq 'centos:6') {
	    $doit->write_binary("$dir/.distro_support/CentOS.repo", <<'EOF');
[base]
name=CentOS-6.10 - Base
baseurl=http://vault.centos.org/6.10/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
enabled=1
metadata_expire=never

#released updates
[updates]
name=CentOS-6.10 - Updates
baseurl=http://vault.centos.org/6.10/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
enabled=1
metadata_expire=never

# additional packages that may be useful
[extras]
name=CentOS-6.10 - Extras
baseurl=http://vault.centos.org/6.10/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
enabled=1
metadata_expire=never

# additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6.10 - CentOSPlus
baseurl=http://vault.centos.org/6.10/centosplus/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
enabled=0
metadata_expire=never

#contrib - packages by Centos Users
[contrib]
name=CentOS-6.10 - Contrib
baseurl=http://vault.centos.org/6.10/contrib/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
enabled=0
metadata_expire=never
EOF
	    $doit->write_binary("$dir/.distro_support/epel.repo", <<'EOF');
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
metadata_expire=never

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 6 - $basearch - Debug
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/$basearch/debug
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1
metadata_expire=never

[epel-source]
name=Extra Packages for Enterprise Linux 6 - $basearch - Source
baseurl=https://archives.fedoraproject.org/pub/archive/epel/6/SRPMS
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1
metadata_expire=never
EOF
	} elsif ($distro_spec eq 'centos:7') {
	    $doit->write_binary("$dir/.distro_support/CentOS.repo", <<'EOF');
[base]
name=CentOS-$releasever - Base
baseurl=https://vault.centos.org/7.9.2009/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[updates]
name=CentOS-$releasever - Updates
baseurl=https://vault.centos.org/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[extras]
name=CentOS-$releasever - Extras
baseurl=https://vault.centos.org/7.9.2009/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
EOF
	    $doit->write_binary("$dir/.distro_support/epel.repo", <<'EOF');
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=https://archives.fedoraproject.org/pub/archive/epel/7/$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
EOF
	} else {
	    error "Should never happen";
	}
	$doit->write_binary("$dir/.distro_support/run.sh", <<'EOF');
#! /bin/sh
set -ex
rm -f /etc/yum.repos.d/CentOS*.repo
rm -f /etc/yum.repos.d/epel.repo
cp .distro_support/CentOS.repo /etc/yum.repos.d/
cp .distro_support/epel.repo /etc/yum.repos.d/
yum clean all
EOF
	$doit->chmod(0755, "$dir/.distro_support/run.sh");
    }
}

sub _check_clean_git {
    $doit->add_component('git');

    my $status = $doit->git_short_status;
    if ($status eq '<<') {
	error 'Working directory has uncomitted changes: ' . `git status`;
    }
    if ($status eq '*') {
	error 'Working directory has files not under git control (and not in .gitignore or .git/info/exclude): ' . `git status`;
    }
}

# REPO BEGIN
# REPO NAME y_or_n /home/eserte/src/srezic-repository
# REPO MD5 146cfcf8f954555fe0117a55b0ddc9b1

#=head2 y_or_n
#
#Accept user input. Return true on 'y', return false on 'n', otherwise
#ask again.
#
#A default may be supplied as an optional argument:
#
#    y_or_n 'y';
#    y_or_n 'n';
#
#=cut

sub y_or_n (;$) {
    my $default = shift;
    while () {
        chomp(my $yn = );
	if ($yn eq '' && defined $default) {
	    $yn = $default;
	}
        if (lc $yn eq 'y') {
            return 1;
        } elsif (lc $yn eq 'n') {
	    return 0;
        } else {
            print STDERR "Please answer y or n: ";
        }
    }
}
# REPO END

{
    package CustomConfig;
    use Config '%Config';
    use Tie::Hash;
    our @ISA = qw(Tie::StdHash);

    sub TIEHASH {
	my($class, $custom_options) = @_;
	bless { custom_options => $custom_options }, $class;
    }

    sub FETCH {
	my($self, $key) = @_;
	if (exists $self->{custom_options}->{$key}) {
	    return $self->{original_hash}->{$key};
	} else {
	    return $Config::Config{$key};
	}
    }
}

1;
__END__