WIP

flake.nix

@@ -50,6 +50,11 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    ra-multiplex = {
+      url = "github:pr2502/ra-multiplex";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     # Nix expressions and keys (TODO: move keys to another solution like agenix)
     # which should be kept from the main repo for privacy reasons.
     #
@@ -75,6 +80,7 @@
     secrets,
     sops-nix,
     vscode-server,
+    ra-multiplex
     # website
   }: let
     system = "x86_64-linux";
@@ -101,6 +107,10 @@
           inherit (nonrecursive-unstable-pkgs) atuin wstunnel;
         })
 
+        (self: super: {
+          ra-multiplex = ra-multiplex.packages.${system}.default;
+        })
+
         # https://github.com/NixOS/nixpkgs/pull/251706
         (self: super: {
           mozc = self.qt6Packages.callPackage ./package-overrides/mozc.nix { };

home/home.nix

@@ -51,6 +51,7 @@ in {
     ./services/mpd.nix
     ./services/picom.nix
     ./services/polybar.nix
+    ./services/ra-multiplex.nix
     ./services/screen-locker.nix
     # ./services/stalonetray.nix
     ./services/sxhkd.nix

home/programs/vscode/default.nix

@@ -161,6 +161,9 @@ in
       "vsintellicode.modify.editor.suggestSelection" = "automaticallyOverrodeDefaultValue";
       "window.zoomLevel" = 1;
 
+      "rust-analyzer.server.path" =
+        toString (pkgs.writeShellScript "ra-multiplex-client" "${lib.getExe pkgs.ra-multiplex} client");
+
       "search.exclude" = {
         "**/node_modules" = true;
         "**/bower_components" = true;

home/services/ra-multiplex.nix

@@ -0,0 +1,36 @@
+{ pkgs, lib, ... }:
+let
+  format = pkgs.formats.toml { };
+  package = pkgs.ra-multiplex;
+in
+{
+  xdg.configFile."ra-multiplex/config.toml".source = format.generate "ra-multiplex-config.toml" {
+    # listen = "/var/run/user/1001/ra-mux/ra-multiplex.sock";
+    # connect = "/var/run/user/1001/ra-mux/ra-multiplex.sock";
+    listen = [ "127.0.0.1" 27631 ];
+    connect = [ "127.0.0.1" 27631 ];
+    pass_environment = [
+      "RUST_SRC_PATH"
+      "RUSTC_WRAPPER"
+      "SCCACHE_DIR"
+    ];
+  };
+
+  systemd.user.services.ra-multiplex = {
+    Unit = {
+      Description = "Rust analyzer multiplex server";
+    };
+
+    Service = {
+      Type = "simple";
+      ExecStart = "${lib.getExe package} server";
+      Environment = [
+        "PATH=${lib.makeBinPath [ pkgs.rust-analyzer ]}"
+      ];
+    };
+
+    Install = {
+      WantedBy = [ "default.target" ];
+    };
+  };
+}