added lsp to dev

dev/default.nix

@@ -3,9 +3,7 @@ let
     settings = import ./../settings.nix;
 in
 {
-    imports = [
+    imports = lib.optionals settings.dev.lsp.enable [ ./lsp.nix ]
-        ./language-server.nix
-    ]
     ++ lib.optionals settings.virtualisation.docker-rootless.enable [ ./docker-rootless.nix ]
     ++ lib.optionals settings.virtualisation.qemu.enable [ ./qemu.nix ]
     ++ lib.optionals settings.dev.platformio [ ./platformio.nix ]

dev/language-server.nix

@@ -1,10 +0,0 @@
-{ pkgs, config, ... }: {
-    # various language server used by IDEs and by my Neovim config
-    environment.systemPackages = with pkgs; [
-        shellcheck
-        lua-language-server
-        pyright
-        arduino-language-server
-        clang
-    ];
-}

dev/lsp.nix

@@ -0,0 +1,13 @@
+{ pkgs, lib, ... }:
+let
+    settings = import ./../settings.nix;
+in
+{
+    # various language server used by IDEs and by Neovim lsp-config
+    environment.systemPackages = with pkgs;
+        lib.optionals settings.dev.lsp.shellcheck [ shellcheck ]
+        ++ lib.optionals settings.dev.lsp.luals [ lua-language-server ]
+        ++ lib.optionals settings.dev.lsp.pyright[ pyright ]
+        ++ lib.optionals settings.dev.lsp.arduino [ arduino-language-server ]
+        ++ lib.optionals settings.dev.lsp.clangd [ clang ];
+}

settings.nix

@@ -28,6 +28,16 @@ with import <nixpkgs> {}; {
         platformio = true;
         latex = true;
         dotnet = false;
+
+        lsp = {
+            enable = true;
+            # various language server
+            shellcheck = true;
+            luals = true;
+            pyright = true;
+            arduino = true;
+            clangd = true;
+        };
     };
 
     dvd = true;     # enable DVD decryption + ripping via Handbrake