helix: add rust-analyzer

packages/helix.nix

@@ -143,27 +143,6 @@
       }
       {
         name = "rust";
-        debugger = {
-          command = "${lldb_19}/bin/lldb-dap";
-          name = "lldb";
-          transport = "stdio";
-          templates = [
-            {
-              name = "binary";
-              request = "launch";
-              completion = [
-                {
-                  name = "binary";
-                  completion = "filename";
-                }
-              ];
-              args = {
-                program = "{0}";
-                runInTerminal = true;
-              };
-            }
-          ];
-        };
       }
       {
         name = "c";
@@ -202,6 +181,13 @@
         args = ["start"];
       };
 
+      rust-analyzer = {
+        config = {
+          check.command = "clippy";
+          cargo.features = "all";
+        };
+      };
+
       clangd = {
         command = "${clang-tools}/bin/clangd";
         clangd.fallbackFlags = ["-std=c++2b"];