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#!/usr/bin/env perl
# reprepro-rebuilder -- rebuild Debian packages for a local repository
# Copyright (C) 2020-2022 Sean Whitton <spwhitton@spwhitton.name>
#
# 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 <https://www.gnu.org/licenses/>.
use 5.032;
use strict;
use warnings;
use autodie ":all";
use Cwd;
use File::Basename;
use File::Spec::Functions "catfile", "rel2abs";
use File::Temp "tempdir";
use Array::Utils "array_minus";
use List::Util "uniq";
use Git::Wrapper;
use Getopt::Long;
use Term::UI;
use File::chdir;
our $repo = "$ENV{HOME}/lib/athena-apt";
our $prefix = "athena";
our @dists = qw(bookworm bookworm-backports unstable experimental);
our $bpo_dist = "bookworm-backports";
our $bpo_dist_num = 12;
our @crossbuild_archs = ();
my $us = basename $0;
my ($minus, $plus, $release, $build);
GetOptions
"minus" => \$minus,
"plus" => \$plus,
"release" => \$release,
"wanna-build" => \$build;
$plus or $release or $build or $minus++;
unless (grep($_, $minus, $plus, $release, $build) == 1
and ($minus || $plus) && @ARGV == 1 || ($release || $build) && !@ARGV) {
say STDERR "usage:";
say STDERR " $us [--minus|--plus] CODENAME|SUITE";
say STDERR " $us --release|--wanna-build";
exit 255;
}
-d $repo or die "$repo doesn't exist?";
my $git = Git::Wrapper->new(getcwd);
$build || $git->RUN("status", { porcelain => 1 }) && die "git commit first\n";
my $term = Term::ReadLine->new("brand");
my $suffix = $plus ? "+$prefix" : "~$prefix";
if ($minus || $plus) {
my $codename = shift @ARGV;
prepare($codename, $suffix);
$codename eq "unstable" and maybe_bpo();
maybe_build();
} elsif ($release) {
release();
my ($branch) = $git->rev_parse({ abbrev_ref => 1 }, "HEAD");
$branch eq "$prefix/unstable" and maybe_bpo();
maybe_build();
} elsif ($build) {
build();
}
sub maybe_bpo {
$term->ask_yn(prompt => "Also prepare rebuild for $bpo_dist?")
and prepare($bpo_dist, $suffix)
}
sub maybe_build {
$term->ask_yn(prompt => "Populate ${repo}'s binary builds?")
? build()
: say "Okay, say '$us --wanna-build' when you're ready."
}
#### BRANCHING, MERGING, NEW CHANGELOG ENTRIES ####
sub prepare {
my ($codename, $suffix) = @_;
my $branch = "$prefix/$codename";
if ($codename eq $bpo_dist) {
$suffix = "~bpo$bpo_dist_num+1$suffix";
} elsif ($codename =~ /-backports$/) {
die "unknown backports suite $codename";
}
my @matching_remote_branches = map { (split)[2] =~ s{^refs/remotes/}{}r }
grep m{/$branch$}, $git->for_each_ref("refs/remotes/");
if ($git->for_each_ref("[r]efs/heads/$branch")) {
my ($current) = $git->rev_parse({ abbrev_ref => 1 }, "HEAD");
if ($branch eq $current) {
say STDERR
"Already on $branch, don't know what you want to rebuild.";
say STDERR "Maybe you wanted '$us --release' to build a dsc.";
exit 1;
} else {
$git->checkout($branch);
system "dgit", "setup-mergechangelogs";
$git->merge($current);
}
} elsif (@matching_remote_branches) {
say STDERR "I want to create branch $branch,"
. " but these remote branches already exist:";
say STDERR " $_" for @matching_remote_branches;
say STDERR "maybe you want to check out"
. " or 'git branchmove get' one of those.";
exit 1;
} else {
$git->checkout("-b", $branch);
}
system "dch", "-l$suffix", "Rebuild for $prefix apt repository.";
$git->add("debian/changelog");
$git->commit({ message => "Rebuild for $prefix apt repository" });
{
no autodie;
$term->ask_yn(prompt => "Build binary package for local testing?")
and system qw(dgit sbuild --no-run-lintian -A -d), $codename;
}
$term->ask_yn(prompt => "Tag release & add dsc to reprepro?")
? release(1)
: say "Okay, say '$us --release' when you're ready.";
}
#### 'dch -r' & ADDING SOURCE PACKAGES TO REPREPRO ####
sub release {
my $amend = shift // 0;
my ($branch) = $git->symbolic_ref("HEAD");
(my $codename = $branch) =~ s{^refs/heads/$prefix/}{};
chomp(my $dist = `dpkg-parsechangelog -SDistribution`);
if ($dist eq "UNRELEASED") {
system "dch", "-D$codename", "-r";
$git->add("debian/changelog");
$git->commit({
amend => $amend,
message => $amend
? "Rebuild for $prefix apt repository"
: "Release rebuild to $prefix apt repository"
});
} elsif ($dist ne $codename) {
die "d/changelog has $dist, but branch name indicates $codename\n";
}
system "dgit", "build-source";
system qw(gbp buildpackage --git-tag-only --git-ignore-branch);
chomp(my $package = `dpkg-parsechangelog -SSource`);
chomp(my $version = `dpkg-parsechangelog -SVersion`);
reprepro("includedsc", $codename, rel2abs "../${package}_${version}.dsc");
}
#### POPULATING REPREPRO BINARY PACKAGES ####
sub build {
my (@succeeded, @failed);
chomp(my $arch = `dpkg --print-architecture`);
# Add "Tracking: minimal" for each distribution's stanza in reprepro conf.
reprepro("retrack", @dists);
foreach my $dist (@dists) {
my @all_needed = dsc2rel(reprepro("build-needing", $dist, "all"));
my @arch_needed = dsc2rel(reprepro("build-needing", $dist, $arch));
my %cross_needed = map {
my @dscs = reprepro("build-needing", $dist, $_);
@dscs ? ($_, [dsc2rel(@dscs)]) : ()
} grep $_ ne $arch, @crossbuild_archs;
next unless @all_needed or @arch_needed or %cross_needed;
@arch_needed = array_minus @arch_needed, @all_needed;
my $build_debs = sub {
my %opts = shift->%*;
my @args = ("--no-run-lintian", "-d", $dist);
push @args, $opts{all} ? "--arch-all" : "--no-arch-all";
for (@_) {
no autodie;
my $bn = basename $_;
if ($opts{cross}) {
system "sbuild", @args, "--host=$opts{cross}", $bn;
# Many packages aren't crossbuildable. Fall back to qemu.
$? == 0
or system "sbuild", @args, "--arch=$opts{cross}", $bn;
} else {
system "sbuild", @args, $bn;
}
push @{ $? == 0 ? \@succeeded : \@failed }, "$bn:$opts{desc}";
}
};
local $CWD = $repo;
my $temp = tempdir CLEANUP => 1;
system "dcmd", "cp", $_, $temp
for uniq @all_needed, @arch_needed, map @$_, values %cross_needed;
local $CWD = $temp;
$build_debs->({ desc => $arch }, @arch_needed);
$build_debs->({ desc => "$arch+all", all => 1 }, @all_needed);
$build_debs->({ desc => $_, cross => $_ }, $cross_needed{$_}->@*)
for keys %cross_needed;
# Command may fail if the .deb is already present from another build.
eval { reprepro("includedeb", $dist, $_) } for <$temp/*.deb>;
}
say "successful builds: @succeeded" if @succeeded;
say "failed builds: @failed" if @failed;
}
sub dsc2rel { map +(split)[2], @_ }
sub reprepro {
local $CWD = $repo;
wantarray ? `reprepro @_` : system "reprepro", @_
}
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