fix yamlfmt; add r treesitter

home/programs/coding/nixvim/lsp.nix

@@ -118,6 +118,7 @@
             shellcheck.command = lib.getExe pkgs.shellcheck;
             shellharden.command = lib.getExe pkgs.shellharden;
             stylua.command = lib.getExe pkgs.stylua;
+            yamlfmt.command = lib.getExe pkgs.yamlfmt;
             latexindent.prepend_args = [ ''-y="defaultIndent='  '"'' ];
           };
         };

home/programs/coding/nixvim/treesitter.nix

@@ -21,6 +21,7 @@
       "glsl"
       "css"
       "hyprlang"
+      "r"
     ];
     settings.highlight.enable = true;
     settings.indent.enable = true;