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{ config, lib, pkgs, ... }:
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with lib;
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let
cfg = config.services.nginx;
virtualHosts = mapAttrs (vhostName: vhostConfig:
let
serverName = if vhostConfig.serverName != null
then vhostConfig.serverName
else vhostName;
acmeDirectory = config.security.acme.directory;
in
vhostConfig // {
inherit serverName;
} // (optionalAttrs vhostConfig.enableACME {
sslCertificate = "${acmeDirectory}/${serverName}/fullchain.pem";
sslCertificateKey = "${acmeDirectory}/${serverName}/key.pem";
}) // (optionalAttrs (vhostConfig.useACMEHost != null) {
sslCertificate = "${acmeDirectory}/${vhostConfig.useACMEHost}/fullchain.pem";
sslCertificateKey = "${acmeDirectory}/${vhostConfig.useACMEHost}/key.pem";
})
) cfg.virtualHosts;
enableIPv6 = config.networking.enableIPv6;
recommendedProxyConfig = pkgs.writeText "nginx-recommended-proxy-headers.conf" ''
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header Accept-Encoding "";
'';
upstreamConfig = toString (flip mapAttrsToList cfg.upstreams (name: upstream: ''
upstream ${name} {
${toString (flip mapAttrsToList upstream.servers (name: server: ''
server ${name} ${optionalString server.backup "backup"};
''))}
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${upstream.extraConfig}
}
''));
configFile = pkgs.writeText "nginx.conf" ''
user ${cfg.user} ${cfg.group};
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error_log stderr;
daemon off;
${cfg.config}
${optionalString (cfg.eventsConfig != "" || cfg.config == "") ''
events {
${cfg.eventsConfig}
}
''}
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${optionalString (cfg.httpConfig == "" && cfg.config == "") ''
http {
include ${cfg.package}/conf/mime.types;
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include ${cfg.package}/conf/fastcgi.conf;
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include ${cfg.package}/conf/uwsgi_params;
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${optionalString (cfg.resolver.addresses != []) ''
resolver ${toString cfg.resolver.addresses} ${optionalString (cfg.resolver.valid != "") "valid=${cfg.resolver.valid}"};
''}
${upstreamConfig}
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${optionalString (cfg.recommendedOptimisation) ''
# optimisation
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
''}
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ssl_protocols ${cfg.sslProtocols};
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ssl_ciphers ${cfg.sslCiphers};
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${optionalString (cfg.sslDhparam != null) "ssl_dhparam ${cfg.sslDhparam};"}
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${optionalString (cfg.recommendedTlsSettings) ''
ssl_session_cache shared:SSL:42m;
ssl_session_timeout 23m;
ssl_ecdh_curve secp384r1;
ssl_prefer_server_ciphers on;
ssl_stapling on;
ssl_stapling_verify on;
''}
${optionalString (cfg.recommendedGzipSettings) ''
gzip on;
gzip_disable "msie6";
gzip_proxied any;
gzip_comp_level 9;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
gzip_vary on;
''}
${optionalString (cfg.recommendedProxySettings) ''
proxy_redirect off;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_http_version 1.0;
include ${recommendedProxyConfig};
''}
# $connection_upgrade is used for websocket proxying
map $http_upgrade $connection_upgrade {
default upgrade;
''' close;
}
client_max_body_size ${cfg.clientMaxBodySize};
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server_tokens ${if cfg.serverTokens then "on" else "off"};
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${cfg.commonHttpConfig}
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${vhosts}
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${optionalString cfg.statusPage ''
server {
listen 80;
${optionalString enableIPv6 "listen [::]:80;" }
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server_name localhost;
location /nginx_status {
stub_status on;
access_log off;
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allow 127.0.0.1;
${optionalString enableIPv6 "allow ::1;"}
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deny all;
}
}
''}
${cfg.appendHttpConfig}
}''}
${optionalString (cfg.httpConfig != "") ''
http {
include ${cfg.package}/conf/mime.types;
include ${cfg.package}/conf/fastcgi.conf;
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include ${cfg.package}/conf/uwsgi_params;
${cfg.httpConfig}
}''}
${cfg.appendConfig}
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'';
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vhosts = concatStringsSep "\n" (mapAttrsToList (vhostName: vhost:
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let
onlySSL = vhost.onlySSL || vhost.enableSSL;
hasSSL = onlySSL || vhost.addSSL || vhost.forceSSL;
defaultListen =
if vhost.listen != [] then vhost.listen
else ((optionals hasSSL (
singleton { addr = "0.0.0.0"; port = 443; ssl = true; }
++ optional enableIPv6 { addr = "[::]"; port = 443; ssl = true; }
)) ++ optionals (!onlySSL) (
singleton { addr = "0.0.0.0"; port = 80; ssl = false; }
++ optional enableIPv6 { addr = "[::]"; port = 80; ssl = false; }
));
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hostListen =
if vhost.forceSSL
then filter (x: x.ssl) defaultListen
else defaultListen;
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listenString = { addr, port, ssl, ... }:
"listen ${addr}:${toString port} "
+ optionalString ssl "ssl "
+ optionalString (ssl && vhost.http2) "http2 "
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+ optionalString vhost.default "default_server "
+ ";";
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redirectListen = filter (x: !x.ssl) defaultListen;
acmeLocation = optionalString (vhost.enableACME || vhost.useACMEHost != null) ''
location /.well-known/acme-challenge {
${optionalString (vhost.acmeFallbackHost != null) "try_files $uri @acme-fallback;"}
root ${vhost.acmeRoot};
auth_basic off;
}
${optionalString (vhost.acmeFallbackHost != null) ''
location @acme-fallback {
auth_basic off;
proxy_pass http://${vhost.acmeFallbackHost};
}
''}
'';
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in ''
${optionalString vhost.forceSSL ''
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server {
${concatMapStringsSep "\n" listenString redirectListen}
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server_name ${vhost.serverName} ${concatStringsSep " " vhost.serverAliases};
${acmeLocation}
location / {
return 301 https://$host$request_uri;
}
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}
''}
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server {
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${concatMapStringsSep "\n" listenString hostListen}
server_name ${vhost.serverName} ${concatStringsSep " " vhost.serverAliases};
${acmeLocation}
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${optionalString (vhost.root != null) "root ${vhost.root};"}
${optionalString (vhost.globalRedirect != null) ''
return 301 http${optionalString hasSSL "s"}://${vhost.globalRedirect}$request_uri;
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''}
${optionalString hasSSL ''
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ssl_certificate ${vhost.sslCertificate};
ssl_certificate_key ${vhost.sslCertificateKey};
''}
${optionalString (vhost.basicAuthFile != null || vhost.basicAuth != {}) ''
auth_basic secured;
auth_basic_user_file ${if vhost.basicAuthFile != null then vhost.basicAuthFile else mkHtpasswd vhostName vhost.basicAuth};
''}
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${mkLocations vhost.locations}
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${vhost.extraConfig}
}
''
) virtualHosts);
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mkLocations = locations: concatStringsSep "\n" (mapAttrsToList (location: config: ''
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location ${location} {
${optionalString (config.proxyPass != null && !cfg.proxyResolveWhileRunning)
"proxy_pass ${config.proxyPass};"
}
${optionalString (config.proxyPass != null && cfg.proxyResolveWhileRunning) ''
set $nix_proxy_target "${config.proxyPass}";
proxy_pass $nix_proxy_target;
''}
${optionalString config.proxyWebsockets ''
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
''}
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${optionalString (config.index != null) "index ${config.index};"}
${optionalString (config.tryFiles != null) "try_files ${config.tryFiles};"}
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${optionalString (config.root != null) "root ${config.root};"}
${optionalString (config.alias != null) "alias ${config.alias};"}
${config.extraConfig}
${optionalString (config.proxyPass != null && cfg.recommendedProxySettings) "include ${recommendedProxyConfig};"}
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}
'') locations);
mkHtpasswd = vhostName: authDef: pkgs.writeText "${vhostName}.htpasswd" (
concatStringsSep "\n" (mapAttrsToList (user: password: ''
${user}:{PLAIN}${password}
'') authDef)
);
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in
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{
options = {
services.nginx = {
enable = mkEnableOption "Nginx Web Server";
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statusPage = mkOption {
default = false;
type = types.bool;
description = "
Enable status page reachable from localhost on http://127.0.0.1/nginx_status.
";
};
recommendedTlsSettings = mkOption {
default = false;
type = types.bool;
description = "
Enable recommended TLS settings.
";
};
recommendedOptimisation = mkOption {
default = false;
type = types.bool;
description = "
Enable recommended optimisation settings.
";
};
recommendedGzipSettings = mkOption {
default = false;
type = types.bool;
description = "
Enable recommended gzip settings.
";
};
recommendedProxySettings = mkOption {
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default = false;
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type = types.bool;
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description = "
Enable recommended proxy settings.
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";
};
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package = mkOption {
default = pkgs.nginxStable;
defaultText = "pkgs.nginxStable";
type = types.package;
description = "
Nginx package to use. This defaults to the stable version. Note
that the nginx team recommends to use the mainline version which
available in nixpkgs as <literal>nginxMainline</literal>.
";
};
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config = mkOption {
default = "";
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description = "
Verbatim nginx.conf configuration.
This is mutually exclusive with the structured configuration
via virtualHosts and the recommendedXyzSettings configuration
options. See appendConfig for appending to the generated http block.
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";
};
appendConfig = mkOption {
type = types.lines;
default = "";
description = ''
Configuration lines appended to the generated Nginx
configuration file. Commonly used by different modules
providing http snippets. <option>appendConfig</option>
can be specified more than once and it's value will be
concatenated (contrary to <option>config</option> which
can be set only once).
'';
};
commonHttpConfig = mkOption {
type = types.lines;
default = "";
example = ''
resolver 127.0.0.1 valid=5s;
log_format myformat '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"';
'';
description = ''
With nginx you must provide common http context definitions before
they are used, e.g. log_format, resolver, etc. inside of server
or location contexts. Use this attribute to set these definitions
at the appropriate location.
'';
};
httpConfig = mkOption {
type = types.lines;
default = "";
description = "
Configuration lines to be set inside the http block.
This is mutually exclusive with the structured configuration
via virtualHosts and the recommendedXyzSettings configuration
options. See appendHttpConfig for appending to the generated http block.
";
};
eventsConfig = mkOption {
type = types.lines;
default = "";
description = ''
Configuration lines to be set inside the events block.
'';
};
appendHttpConfig = mkOption {
type = types.lines;
default = "";
description = "
Configuration lines to be appended to the generated http block.
This is mutually exclusive with using config and httpConfig for
specifying the whole http block verbatim.
";
};
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stateDir = mkOption {
default = "/var/spool/nginx";
description = "
Directory holding all state for nginx to run.
";
};
user = mkOption {
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type = types.str;
default = "nginx";
description = "User account under which nginx runs.";
};
group = mkOption {
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type = types.str;
default = "nginx";
description = "Group account under which nginx runs.";
};
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serverTokens = mkOption {
type = types.bool;
default = false;
description = "Show nginx version in headers and error pages.";
};
clientMaxBodySize = mkOption {
type = types.string;
default = "10m";
description = "Set nginx global client_max_body_size.";
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};
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sslCiphers = mkOption {
type = types.str;
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default = "EECDH+aRSA+AESGCM:EDH+aRSA:EECDH+aRSA:+AES256:+AES128:+SHA1:!CAMELLIA:!SEED:!3DES:!DES:!RC4:!eNULL";
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description = "Ciphers to choose from when negotiating tls handshakes.";
};
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sslProtocols = mkOption {
type = types.str;
default = "TLSv1.2";
example = "TLSv1 TLSv1.1 TLSv1.2";
description = "Allowed TLS protocol versions.";
};
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sslDhparam = mkOption {
type = types.nullOr types.path;
default = null;
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example = "/path/to/dhparams.pem";
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description = "Path to DH parameters file.";
};
proxyResolveWhileRunning = mkOption {
type = types.bool;
default = false;
description = ''
Resolves domains of proxyPass targets at runtime
and not only at start, you have to set
services.nginx.resolver, too.
'';
};
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resolver = mkOption {
type = types.submodule {
options = {
addresses = mkOption {
type = types.listOf types.str;
default = [];
example = literalExample ''[ "[::1]" "127.0.0.1:5353" ]'';
description = "List of resolvers to use";
};
valid = mkOption {
type = types.str;
default = "";
example = "30s";
description = ''
By default, nginx caches answers using the TTL value of a response.
An optional valid parameter allows overriding it
'';
};
};
};
description = ''
Configures name servers used to resolve names of upstream servers into addresses
'';
default = {};
};
upstreams = mkOption {
type = types.attrsOf (types.submodule {
options = {
servers = mkOption {
type = types.attrsOf (types.submodule {
options = {
backup = mkOption {
type = types.bool;
default = false;
description = ''
Marks the server as a backup server. It will be passed
requests when the primary servers are unavailable.
'';
};
};
});
description = ''
Defines the address and other parameters of the upstream servers.
'';
default = {};
};
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extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
These lines go to the end of the upstream verbatim.
'';
};
};
});
description = ''
Defines a group of servers to use as proxy target.
'';
default = {};
};
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virtualHosts = mkOption {
type = types.attrsOf (types.submodule (import ./vhost-options.nix {
inherit config lib;
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}));
default = {
localhost = {};
};
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example = literalExample ''
{
"hydra.example.com" = {
forceSSL = true;
enableACME = true;
locations."/" = {
proxyPass = "http://localhost:3000";
};
};
};
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'';
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description = "Declarative vhost config";
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};
};
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};
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config = mkIf cfg.enable {
# TODO: test user supplied config file pases syntax test
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warnings =
let
deprecatedSSL = name: config: optional config.enableSSL
''
config.services.nginx.virtualHosts.<name>.enableSSL is deprecated,
use config.services.nginx.virtualHosts.<name>.onlySSL instead.
'';
in flatten (mapAttrsToList deprecatedSSL virtualHosts);
assertions =
let
hostOrAliasIsNull = l: l.root == null || l.alias == null;
in [
{
assertion = all (host: all hostOrAliasIsNull (attrValues host.locations)) (attrValues virtualHosts);
message = "Only one of nginx root or alias can be specified on a location.";
}
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{
assertion = all (conf: with conf;
!(addSSL && (onlySSL || enableSSL)) &&
!(forceSSL && (onlySSL || enableSSL)) &&
!(addSSL && forceSSL)
) (attrValues virtualHosts);
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message = ''
Options services.nginx.service.virtualHosts.<name>.addSSL,
services.nginx.virtualHosts.<name>.onlySSL and services.nginx.virtualHosts.<name>.forceSSL
are mutually exclusive.
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'';
}
{
assertion = all (conf: !(conf.enableACME && conf.useACMEHost != null)) (attrValues virtualHosts);
message = ''
Options services.nginx.service.virtualHosts.<name>.enableACME and
services.nginx.virtualHosts.<name>.useACMEHost are mutually exclusive.
'';
}
];
systemd.services.nginx = {
description = "Nginx Web Server";
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after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
stopIfChanged = false;
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preStart =
''
mkdir -p ${cfg.stateDir}/logs
chmod 700 ${cfg.stateDir}
chown -R ${cfg.user}:${cfg.group} ${cfg.stateDir}
${cfg.package}/bin/nginx -c ${configFile} -p ${cfg.stateDir} -t
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'';
serviceConfig = {
ExecStart = "${cfg.package}/bin/nginx -c ${configFile} -p ${cfg.stateDir}";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
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Restart = "always";
RestartSec = "10s";
StartLimitInterval = "1min";
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};
};
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security.acme.certs = filterAttrs (n: v: v != {}) (
let
vhostsConfigs = mapAttrsToList (vhostName: vhostConfig: vhostConfig) virtualHosts;
acmeEnabledVhosts = filter (vhostConfig: vhostConfig.enableACME && vhostConfig.useACMEHost == null) vhostsConfigs;
acmePairs = map (vhostConfig: { name = vhostConfig.serverName; value = {
user = cfg.user;
group = lib.mkDefault cfg.group;
webroot = vhostConfig.acmeRoot;
extraDomains = genAttrs vhostConfig.serverAliases (alias: null);
postRun = ''
systemctl reload nginx
'';
}; }) acmeEnabledVhosts;
in
listToAttrs acmePairs
);
users.users = optionalAttrs (cfg.user == "nginx") (singleton
{ name = "nginx";
group = cfg.group;
uid = config.ids.uids.nginx;
});
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users.groups = optionalAttrs (cfg.group == "nginx") (singleton
{ name = "nginx";
gid = config.ids.gids.nginx;
});
};
}