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# python -- lintian check script -*- perl -*-
#
# Copyright (C) 2016 Chris Lamb
#
# 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 2 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, you can find it on the World Wide
# Web at http://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
package Lintian::python;
use strict;
use warnings;
use autodie;
use List::MoreUtils qw(any none);
use Lintian::Tags qw(tag);
use Lintian::Relation qw(:constants);
my @FIELDS = qw(Depends Pre-Depends Recommends Suggests);
my @IGNORE = qw(-dev$ -docs?$ -common$ -tools$);
my @PYTHON2 = qw(python python2.7 python-dev);
my %DJANGO_PACKAGES = (
'^python3-django-' => 'python3-django',
'^python2?-django-' => 'python-django',
);
my %REQUIRED_DEPENDS = (
'python2' => 'python-minimal:any | python:any',
'python3' => 'python3-minimal:any | python3:any',
);
my %MISMATCHED_SUBSTVARS = (
'^python3-.+' => '${python:Depends}',
'^python2?-.+' => '${python3:Depends}',
);
sub run {
my ($pkg, $type, $info) = @_;
if ($type eq 'source') {
_run_source($pkg, $info);
} else {
_run_binary($pkg, $info);
}
return;
}
sub _run_source {
my ($pkg, $info) = @_;
my @package_names = $info->binaries;
foreach my $bin (@package_names) {
# Python 2 modules
if ($bin =~ /^python2?-(.*)$/) {
my $suffix = $1;
next if any { $bin =~ /$_/ } @IGNORE;
next if any { $_ eq "python3-${suffix}" } @package_names;
# Don't trigger if we ship any Python 3 module
next if any {
$info->binary_relation($_, 'all')
->implies('${python3:Depends}')
}
@package_names;
tag 'python-foo-but-no-python3-foo', $bin;
}
}
my $build_all = $info->relation('build-depends-all');
tag 'build-depends-on-python-sphinx-only'
if $build_all->implies('python-sphinx')
and not $build_all->implies('python3-sphinx');
tag 'alternatively-build-depends-on-python-sphinx-and-python3-sphinx'
if $info->field('build-depends', '')
=~ m,\bpython-sphinx\s+\|\s+python3-sphinx\b,g;
# Mismatched substvars
foreach my $regex (keys %MISMATCHED_SUBSTVARS) {
my $substvar = $MISMATCHED_SUBSTVARS{$regex};
for my $binpkg ($info->binaries) {
next if any { $binpkg =~ /$_/ } @IGNORE;
next if $binpkg !~ qr/$regex/;
tag 'mismatched-python-substvar', $binpkg, $substvar
if $info->binary_relation($binpkg, 'all')->implies($substvar);
}
}
return;
}
sub _run_binary {
my ($pkg, $info) = @_;
my $deps = Lintian::Relation->and($info->relation('all'),
$info->relation('provides'), $pkg);
my @entries = $info->changelog ? $info->changelog->data : ();
# Check for missing dependencies
if ($pkg !~ /-dbg$/) {
foreach my $file ($info->sorted_index) {
if ( $file->is_file
and $file
=~ m,usr/lib/(?<version>python[23])[\d.]*/(?:site|dist)-packages,
and not $deps->implies($REQUIRED_DEPENDS{$+{version}})) {
tag 'python-package-missing-depends-on-python';
last;
}
}
}
# Python 2 modules
if ( $pkg =~ /^python2?-/
and none { $pkg =~ /$_$/ } @IGNORE
and @entries == 1
and $entries[0]->Changes
!~ /\bpython 2(?:\.x)? (?:variant|version)\b/im
and index($entries[0]->Changes, $pkg) == -1) {
tag 'new-package-should-not-package-python2-module', $pkg;
}
# Python applications
if ($pkg !~ /^python[23]?-/ and none { $_ eq $pkg } @PYTHON2) {
for my $field (@FIELDS) {
for my $dep (@PYTHON2) {
tag 'dependency-on-python-version-marked-for-end-of-life',
"($field: $dep)"
if $info->relation($field)->implies("$dep:any");
}
}
}
# Django modules
foreach my $regex (keys %DJANGO_PACKAGES) {
my $basepkg = $DJANGO_PACKAGES{$regex};
next if $pkg !~ /$regex/;
next if any { $pkg =~ /$_/ } @IGNORE;
tag 'django-package-does-not-depend-on-django', $basepkg
if not $info->relation('strong')->implies($basepkg);
}
if ($pkg =~ /^python([23]?)-/ and none { $pkg =~ /$_/ } @IGNORE) {
my $version = $1 || '2'; # Assume python-foo is a Python 2.x package
my @prefixes = ($version eq '2') ? 'python3' : ('python', 'python2');
for my $field (@FIELDS) {
for my $prefix (@prefixes) {
my $visit = sub {
my $rel = $_;
return if any { $rel =~ /$_/ } @IGNORE;
#<<< No tidy (tag name too long)
tag 'python-package-depends-on-package-from-other-python-variant',
"$field: $rel" if /^$prefix-/;
#>>>
};
$info->relation($field)->visit($visit, VISIT_PRED_NAME);
}
}
}
return;
}
1;
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# indent-tabs-mode: nil
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