Attribute nix not found while building a package

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I took the OP packages/default.nix and fixed the obvious syntax errors, then I tried to build with the go-template-lsp.nix from the replied to post.

I again fixed issues as I went, never seeing the error you mentioned.

What I did though was using nix-build -A go-template-lsp.lsp, as that is the attribute path you have choosen for whatever reason.

I was able to get to the point that the deps should be fetched, though that fails, as the repo in question is broken, as it doesn’t commit a go.sum (lock file for go modules), this is required.

The changes I made so far to get where I am now:

diff --git a/default.nix b/default.nix
index 2cd0113f92..74a95b9996 100644
--- a/default.nix
+++ b/default.nix
@@ -1,4 +1,4 @@
 let
-  nixpkgs = fetchTarball “https://github.com/NixOS/nixpkgs/tarball/nixos-25.11”;
-  pkgs = import nixpkgs {config = { };overlays = ;};
+  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-25.11";
+  pkgs = import nixpkgs {config = { };overlays = [];};
 in { go-template-lsp = pkgs.callPackage ./go-template-lsp.nix { }; }
diff --git a/go-template-lsp.nix b/go-template-lsp.nix
index b1bd945ebd..7f22f6be90 100644
--- a/go-template-lsp.nix
+++ b/go-template-lsp.nix
@@ -1,15 +1,17 @@

-{ buildGoModule, fetchFromGithub }: {
+{ buildGoModule, fetchFromGitHub }: {
   lsp = buildGoModule (finalAttrs: {
     pname = "go-template-lsp.nix";
     version = "0.3.4";
-    src = fetchFromGithub {
+    src = fetchFromGitHub {
       owner = "yayolande";
       repo = "go-template-lsp";
-      version = "v${finalAttrs.version}";
-      hash = "sha256-18jcyknq9yhbcilk0gbshvbiszyffbjhxn2g6gcrrmnbykns7gj4";
+      tag = "v${finalAttrs.version}";
+      hash = "sha256-ArfnJzPS4I4BsqOSlosuJNQfpU5V/FeTzSQyC/Xnfro=";
     };

+    vendorHash = "";
+
     meta = {
       description =
         "Language server to be used with Hugo static page generator";
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