drop nested config

This functionality was never actually used AFAICT, as no way to provide
alternate profiles was ever provided.

This changes the configuration format to remove the `[global]` section,
everything that was previously under that namespace is now at the top
level.

nix/modules/default/default.nix

@@ -29,21 +29,21 @@ in
       type = types.submodule {
         freeformType = format.type;
         options = {
-          global.address = lib.mkOption {
+          address = lib.mkOption {
             type = types.nonEmptyStr;
             description = ''
               The local IP address to bind to.
             '';
             default = "::1";
           };
-          global.conduit_compat = lib.mkOption {
+          conduit_compat = lib.mkOption {
             type = types.bool;
             description = ''
               Whether to operate as a drop-in replacement for Conduit.
             '';
             default = false;
           };
-          global.database_path = lib.mkOption {
+          database_path = lib.mkOption {
             type = types.nonEmptyStr;
             readOnly = true;
             description = ''
@@ -52,11 +52,11 @@ in
               Note that this is read-only because this module makes use of
               systemd's `StateDirectory` option.
             '';
-            default = if cfg.settings.global.conduit_compat
+            default = if cfg.settings.conduit_compat
               then "/var/lib/matrix-conduit"
               else "/var/lib/grapevine";
           };
-          global.port = lib.mkOption {
+          port = lib.mkOption {
             type = types.port;
             description = ''
               The local port to bind to.
@@ -98,14 +98,14 @@ in
         RestrictNamespaces = true;
         RestrictRealtime = true;
         StartLimitBurst = 5;
-        StateDirectory = if cfg.settings.global.conduit_compat
+        StateDirectory = if cfg.settings.conduit_compat
           then "matrix-conduit"
           else "grapevine";
         StateDirectoryMode = "0700";
         SystemCallArchitectures = "native";
         SystemCallFilter = [ "@system-service" "~@privileged" ];
         UMask = "077";
-        User = if cfg.settings.global.conduit_compat
+        User = if cfg.settings.conduit_compat
           then "conduit"
           else "grapevine";
       };

src/config/proxy.rs

@@ -10,13 +10,12 @@ use crate::Result;
 /// ```
 /// - Global proxy
 /// ```toml
-/// [global.proxy]
+/// [proxy]
 /// global = { url = "socks5h://localhost:9050" }
 /// ```
 /// - Proxy some domains
 /// ```toml
-/// [global.proxy]
-/// [[global.proxy.by_domain]]
+/// [[proxy.by_domain]]
 /// url = "socks5h://localhost:9050"
 /// include = ["*.onion", "matrix.myspecial.onion"]
 /// exclude = ["*.myspecial.onion"]

src/main.rs

@@ -111,7 +111,7 @@ async fn try_main() -> Result<(), error::Main> {
     let args = args::parse();
 
     // Initialize config
-    let raw_config = Figment::new().merge(Toml::file(&args.config).nested());
+    let raw_config = Figment::new().merge(Toml::file(&args.config));
 
     let config = raw_config.extract::<Config>()?;