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- # pin.pp
- # pin a release in apt, useful for unstable repositories
- define apt::pin(
- $ensure = present,
- $explanation = undef,
- $order = 50,
- $packages = '*',
- $priority = 0,
- $release = '', # a=
- $origin = '',
- $version = '',
- $codename = '', # n=
- $release_version = '', # v=
- $component = '', # c=
- $originator = '', # o=
- $label = '' # l=
- ) {
- if $order and !is_integer($order) {
- fail('Only integers are allowed in the apt::pin order param')
- }
- 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 is_array($packages) {
- $packages_string = join($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')
- apt::setting { "pref-${file_name}":
- ensure => $ensure,
- priority => $order,
- content => template('apt/_header.erb', 'apt/pin.pref.erb'),
- notify_update => false,
- }
- }
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