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@ -5,7 +5,8 @@ with lib; |
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let |
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cfg = config.services.go-neb; |
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configFile = pkgs.writeText "config.yml" (builtins.toJSON cfg.config); |
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settingsFormat = pkgs.formats.yaml {}; |
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configFile = settingsFormat.generate "config.yaml" cfg.config; |
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in { |
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options.services.go-neb = { |
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enable = mkEnableOption "Extensible matrix bot written in Go"; |
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@ -16,13 +17,26 @@ in { |
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default = ":4050"; |
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}; |
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secretFile = mkOption { |
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type = types.nullOr types.path; |
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default = null; |
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example = "/run/keys/go-neb.env"; |
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description = '' |
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Environment variables from this file will be interpolated into the |
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final config file using envsubst with this syntax: <literal>$ENVIRONMENT</literal> |
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or <literal>''${VARIABLE}</literal>. |
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The file should contain lines formatted as <literal>SECRET_VAR=SECRET_VALUE</literal>. |
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This is useful to avoid putting secrets into the nix store. |
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''; |
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}; |
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baseUrl = mkOption { |
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type = types.str; |
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description = "Public-facing endpoint that can receive webhooks."; |
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}; |
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config = mkOption { |
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type = types.uniq types.attrs; |
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inherit (settingsFormat) type; |
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description = '' |
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Your <filename>config.yaml</filename> as a Nix attribute set. |
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See <link xlink:href="https://github.com/matrix-org/go-neb/blob/master/config.sample.yaml">config.sample.yaml</link> |
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@ -32,18 +46,30 @@ in { |
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}; |
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config = mkIf cfg.enable { |
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systemd.services.go-neb = { |
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systemd.services.go-neb = let |
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finalConfigFile = if cfg.secretFile == null then configFile else "/var/run/go-neb/config.yaml"; |
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in { |
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description = "Extensible matrix bot written in Go"; |
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after = [ "network.target" ]; |
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wantedBy = [ "multi-user.target" ]; |
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environment = { |
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BASE_URL = cfg.baseUrl; |
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BIND_ADDRESS = cfg.bindAddress; |
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CONFIG_FILE = configFile; |
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CONFIG_FILE = finalConfigFile; |
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}; |
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serviceConfig = { |
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ExecStartPre = lib.optional (cfg.secretFile != null) |
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(pkgs.writeShellScript "pre-start" '' |
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umask 077 |
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export $(xargs < ${cfg.secretFile}) |
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${pkgs.envsubst}/bin/envsubst -i "${configFile}" > ${finalConfigFile} |
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chown go-neb ${finalConfigFile} |
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''); |
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PermissionsStartOnly = true; |
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RuntimeDirectory = "go-neb"; |
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ExecStart = "${pkgs.go-neb}/bin/go-neb"; |
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User = "go-neb"; |
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DynamicUser = true; |
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}; |
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}; |
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