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From 1a368abf7a3d72ecda504a69602b33b6869a485c Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Wed, 18 Jul 2018 09:25:57 +0900
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Subject: [PATCH] meson: allow building resolved and machined without nss
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 modules
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This adds -Dnss-resolve= and -Dnss-mymachines= meson options.
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By using this option, e.g., resolved can be built without nss-resolve.
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When no nss modules are built, then test-nss is neither built.
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Also, This changes the option name -Dmyhostname= to -Dnss-myhostname=
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for consistency to other nss related options.
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Closes #9596.
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(cherry picked from commit 08540a9591efe105439be81fc43d6dc65b715978)
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Resolves: #1696224
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---
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 man/nss-myhostname.xml |  2 +-
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 man/nss-mymachines.xml |  2 +-
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 man/nss-resolve.xml    |  2 +-
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 man/rules/meson.build  |  6 +++---
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 meson.build            | 40 ++++++++++++++++++++++++++++++++++------
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 meson_options.txt      | 12 ++++++++----
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 src/test/meson.build   |  2 +-
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 src/test/test-nss.c    |  6 +++---
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 8 files changed, 52 insertions(+), 20 deletions(-)
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diff --git a/man/nss-myhostname.xml b/man/nss-myhostname.xml
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index e1aabacad2..18a6f5f665 100644
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--- a/man/nss-myhostname.xml
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+++ b/man/nss-myhostname.xml
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@@ -6,7 +6,7 @@
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   SPDX-License-Identifier: LGPL-2.1+
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 -->
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-<refentry id="nss-myhostname" conditional='ENABLE_MYHOSTNAME'>
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+<refentry id="nss-myhostname" conditional='ENABLE_NSS_MYHOSTNAME'>
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   <refentryinfo>
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     <title>nss-myhostname</title>
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diff --git a/man/nss-mymachines.xml b/man/nss-mymachines.xml
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index 394a905665..d9811b24cc 100644
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--- a/man/nss-mymachines.xml
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+++ b/man/nss-mymachines.xml
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@@ -6,7 +6,7 @@
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   SPDX-License-Identifier: LGPL-2.1+
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 -->
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-<refentry id="nss-mymachines" conditional='ENABLE_MACHINED'>
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+<refentry id="nss-mymachines" conditional='ENABLE_NSS_MYMACHINES'>
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   <refentryinfo>
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     <title>nss-mymachines</title>
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diff --git a/man/nss-resolve.xml b/man/nss-resolve.xml
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index 588bc04976..56c8099e70 100644
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--- a/man/nss-resolve.xml
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+++ b/man/nss-resolve.xml
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@@ -6,7 +6,7 @@
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   SPDX-License-Identifier: LGPL-2.1+
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 -->
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-<refentry id="nss-resolve" conditional='ENABLE_RESOLVE'>
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+<refentry id="nss-resolve" conditional='ENABLE_NSS_RESOLVE'>
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   <refentryinfo>
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     <title>nss-resolve</title>
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diff --git a/man/rules/meson.build b/man/rules/meson.build
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index 9458a4012d..989d11c9b9 100644
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--- a/man/rules/meson.build
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+++ b/man/rules/meson.build
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@@ -37,9 +37,9 @@ manpages = [
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  ['modules-load.d', '5', [], 'HAVE_KMOD'],
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  ['networkctl', '1', [], 'ENABLE_NETWORKD'],
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  ['networkd.conf', '5', ['networkd.conf.d'], 'ENABLE_NETWORKD'],
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- ['nss-myhostname', '8', ['libnss_myhostname.so.2'], 'ENABLE_MYHOSTNAME'],
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- ['nss-mymachines', '8', ['libnss_mymachines.so.2'], 'ENABLE_MACHINED'],
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- ['nss-resolve', '8', ['libnss_resolve.so.2'], 'ENABLE_RESOLVE'],
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+ ['nss-myhostname', '8', ['libnss_myhostname.so.2'], 'ENABLE_NSS_MYHOSTNAME'],
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+ ['nss-mymachines', '8', ['libnss_mymachines.so.2'], 'ENABLE_NSS_MYMACHINES'],
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+ ['nss-resolve', '8', ['libnss_resolve.so.2'], 'ENABLE_NSS_RESOLVE'],
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  ['nss-systemd', '8', ['libnss_systemd.so.2'], 'ENABLE_NSS_SYSTEMD'],
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  ['os-release', '5', [], ''],
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  ['pam_systemd', '8', [], 'HAVE_PAM'],
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diff --git a/meson.build b/meson.build
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index c1013d525b..863e8eb399 100644
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--- a/meson.build
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+++ b/meson.build
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@@ -1216,7 +1216,6 @@ foreach term : ['utmp',
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                 'networkd',
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                 'timedated',
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                 'timesyncd',
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-                'myhostname',
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                 'firstboot',
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                 'randomseed',
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                 'backlight',
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@@ -1233,12 +1232,39 @@ foreach term : ['utmp',
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                 'smack',
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                 'gshadow',
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                 'idn',
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+                'nss-myhostname',
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                 'nss-systemd']
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         have = get_option(term)
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         name = 'ENABLE_' + term.underscorify().to_upper()
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         conf.set10(name, have)
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 endforeach
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+foreach tuple : [['nss-mymachines', 'machined'],
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+                 ['nss-resolve',    'resolve']]
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+        want = get_option(tuple[0])
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+        if want != 'false'
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+                have = get_option(tuple[1])
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+                if want == 'true' and not have
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+                        error('@0@ is requested but @1@ is disabled'.format(tuple[0], tuple[1]))
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+                endif
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+        else
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+                have = false
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+        endif
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+        name = 'ENABLE_' + tuple[0].underscorify().to_upper()
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+        conf.set10(name, have)
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+endforeach
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+
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+enable_nss = false
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+foreach term : ['ENABLE_NSS_MYHOSTNAME',
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+                'ENABLE_NSS_MYMACHINES',
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+                'ENABLE_NSS_RESOLVE',
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+                'ENABLE_NSS_SYSTEMD']
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+        if conf.get(term) == 1
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+                enable_nss = true
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+        endif
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+endforeach
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+conf.set10('ENABLE_NSS', enable_nss)
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+
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 conf.set10('ENABLE_TIMEDATECTL', get_option('timedated') or get_option('timesyncd'))
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 want_tests = get_option('tests')
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@@ -1417,10 +1443,10 @@ test_dlopen = executable(
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         link_with : [libbasic],
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         dependencies : [libdl])
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-foreach tuple : [['myhostname', 'ENABLE_MYHOSTNAME'],
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+foreach tuple : [['myhostname', 'ENABLE_NSS_MYHOSTNAME'],
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                  ['systemd',    'ENABLE_NSS_SYSTEMD'],
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-                 ['mymachines', 'ENABLE_MACHINED'],
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-                 ['resolve',    'ENABLE_RESOLVE']]
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+                 ['mymachines', 'ENABLE_NSS_MYMACHINES'],
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+                 ['resolve',    'ENABLE_NSS_RESOLVE']]
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         condition = tuple[1] == '' or conf.get(tuple[1]) == 1
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         if condition
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@@ -2943,7 +2969,6 @@ foreach tuple : [
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         ['idn'],
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         ['libidn2'],
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         ['libidn'],
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-        ['nss-systemd'],
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         ['libiptc'],
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         ['elfutils'],
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         ['binfmt'],
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@@ -2978,7 +3003,10 @@ foreach tuple : [
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         ['blkid'],
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         ['dbus'],
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         ['glib'],
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-        ['nss-myhostname',   conf.get('ENABLE_MYHOSTNAME') == 1],
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+        ['nss-myhostname',   conf.get('ENABLE_NSS_MYHOSTNAME') == 1],
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+        ['nss-mymachines',   conf.get('ENABLE_NSS_MYMACHINES') == 1],
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+        ['nss-resolve',      conf.get('ENABLE_NSS_RESOLVE') == 1],
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+        ['nss-systemd',      conf.get('ENABLE_NSS_SYSTEMD') == 1],
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         ['hwdb'],
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         ['tpm'],
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         ['man pages',        want_man],
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diff --git a/meson_options.txt b/meson_options.txt
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index f06a130582..563b11f0a2 100644
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--- a/meson_options.txt
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+++ b/meson_options.txt
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@@ -91,8 +91,14 @@ option('timesyncd', type : 'boolean',
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        description : 'install the systemd-timesyncd daemon')
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 option('remote', type : 'combo', choices : ['auto', 'true', 'false'],
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        description : 'support for "journal over the network"')
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-option('myhostname', type : 'boolean',
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-       description : 'nss-myhostname support')
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+option('nss-myhostname', type : 'boolean',
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+       description : 'install nss-myhostname module')
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+option('nss-mymachines', type : 'combo', choices : ['auto', 'true', 'false'],
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+       description : 'install nss-mymachines module')
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+option('nss-resolve', type : 'combo', choices : ['auto', 'true', 'false'],
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+       description : 'install nss-resolve module')
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+option('nss-systemd', type : 'boolean',
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+       description : 'install nss-systemd module')
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 option('firstboot', type : 'boolean',
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        description : 'support for firstboot mechanism')
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 option('randomseed', type : 'boolean',
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@@ -249,8 +255,6 @@ option('libidn2', type : 'combo', choices : ['auto', 'true', 'false'],
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        description : 'libidn2 support')
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 option('libidn', type : 'combo', choices : ['auto', 'true', 'false'],
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        description : 'libidn support')
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-option('nss-systemd', type : 'boolean',
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-       description : 'enable nss-systemd')
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 option('libiptc', type : 'combo', choices : ['auto', 'true', 'false'],
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        description : 'libiptc support')
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 option('qrencode', type : 'combo', choices : ['auto', 'true', 'false'],
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diff --git a/src/test/meson.build b/src/test/meson.build
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index b982251b1f..0998f59897 100644
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--- a/src/test/meson.build
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+++ b/src/test/meson.build
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@@ -650,7 +650,7 @@ tests += [
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         [['src/test/test-nss.c'],
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          [],
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          [libdl],
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-         '', 'manual'],
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+         'ENABLE_NSS', 'manual'],
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         [['src/test/test-umount.c',
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           'src/core/mount-setup.c',
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diff --git a/src/test/test-nss.c b/src/test/test-nss.c
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index 9e543e7557..e0e7bb300d 100644
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--- a/src/test/test-nss.c
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+++ b/src/test/test-nss.c
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@@ -431,13 +431,13 @@ static int parse_argv(int argc, char **argv,
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                 modules = strv_new(argv[1], NULL);
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         else
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                 modules = strv_new(
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-#if ENABLE_MYHOSTNAME
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+#if ENABLE_NSS_MYHOSTNAME
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                                 "myhostname",
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 #endif
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-#if ENABLE_RESOLVE
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+#if ENABLE_NSS_RESOLVE
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                                 "resolve",
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 #endif
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-#if ENABLE_MACHINED
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+#if ENABLE_NSS_MYMACHINES
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                                 "mymachines",
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 #endif
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                                 "dns",