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# pin.pp
# pin a release in apt, useful for unstable repositories
define apt::pin(
Optional[Enum['file', 'present', 'absent']] $ensure = present,
Optional[String] $explanation = undef,
Variant[Integer] $order = 50,
Variant[String, Array] $packages = '*',
Variant[Numeric, String] $priority = 0,
Optional[String] $release = '', # a=
Optional[String] $origin = '',
Optional[String] $version = '',
Optional[String] $codename = '', # n=
Optional[String] $release_version = '', # v=
Optional[String] $component = '', # c=
Optional[String] $originator = '', # o=
Optional[String] $label = '', # l=
) {
if $explanation {
$_explanation = $explanation
} else {
if defined('$caller_module_name') { # strict vars check
$_explanation = "${caller_module_name}: ${name}"
} else {
$_explanation = ": ${name}"
}
}
$pin_release_array = [
$release,
$codename,
$release_version,
$component,
$originator,
$label,
]
$pin_release = join($pin_release_array, '')
# Read the manpage 'apt_preferences(5)', especially the chapter
# 'The Effect of APT Preferences' to understand the following logic
# and the difference between specific and general form
if $packages =~ Array {
$packages_string = join($packages, ' ')
} else {
$packages_string = $packages
}
if $packages_string != '*' { # specific form
if ( $pin_release != '' and ( $origin != '' or $version != '' )) or
( $version != '' and ( $pin_release != '' or $origin != '' )) {
fail('parameters release, origin, and version are mutually exclusive')
}
} else { # general form
if $version != '' {
fail('parameter version cannot be used in general form')
}
if ( $pin_release != '' and $origin != '' ) {
fail('parameters release and origin are mutually exclusive')
}
}
# According to man 5 apt_preferences:
# The files have either no or "pref" as filename extension
# and only contain alphanumeric, hyphen (-), underscore (_) and period
# (.) characters. Otherwise APT will print a notice that it has ignored a
# file, unless that file matches a pattern in the
# Dir::Ignore-Files-Silently configuration list - in which case it will
# be silently ignored.
$file_name = regsubst($title, '[^0-9a-z\-_\.]', '_', 'IG')
$headertmp = epp('apt/_header.epp')
$pinpreftmp = epp('apt/pin.pref.epp', {
'name' => $name,
'pin_release' => $pin_release,
'release' => $release,
'codename' => $codename,
'release_version' => $release_version,
'component' => $component,
'originator' => $originator,
'label' => $label,
'version' => $version,
'origin' => $origin,
'explanation' => $_explanation,
'packages_string' => $packages_string,
'priority' => $priority,
})
apt::setting { "pref-${file_name}":
ensure => $ensure,
priority => $order,
content => "${headertmp}${pinpreftmp}",
notify_update => false,
}
}
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