works

.vscode/settings.json

@@ -1,11 +1,8 @@
 {
-	"coq.format.indentAfterBullet": "indent",
-	"coq.format.unindentOnCloseProof": true,
-	"coq.format.indentAfterOpenProof": true,
 	"editor.formatOnType": true,
 	"editor.unicodeHighlight.ambiguousCharacters": false,
 	"editor.tabSize": 2,
-	"vscoq.path": "/nix/store/3bhqs93fw89kx339mirf4jgg52dw4fcs-ocaml4.14.2-vscoq-language-server-2.1.4/bin/vscoqtop",
+	"vscoq.path": "/Users/michael/.opam/5.1.0/bin/vscoqtop",
 	"vscoq.args": [
 		"-noinit",
 		"-indices-matter",
@@ -13,7 +10,7 @@
 		"-w",
 		"-notation-overridden",
 		"-Q",
-		"/Applications/Coq-Platform~8.15~2022.04.app/Contents/Resources/lib/coq/user-contrib/UniMath",
+		"/Users/michael/opt/UniMath/UniMath",
 		"UniMath"
 	]
 }

Test.v

@@ -3,4 +3,5 @@ Require Export UniMath.Foundations.All.
 Lemma myfirstlemma : 2 + 2 = 4.
 Proof.
   apply idpath.
-Defined.
+Defined.
+

flake.nix

@@ -33,9 +33,11 @@
       packages = { inherit unimath; };
 
       devShell = pkgs.mkShell {
+
         packages = [
           coq
           coqPackages.vscoq-language-server
+          coqPackages.coq-lsp
         ];
       };
     });