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-rw-r--r--nixpkgs/nixos/modules/services/development/livebook.md8
1 files changed, 5 insertions, 3 deletions
diff --git a/nixpkgs/nixos/modules/services/development/livebook.md b/nixpkgs/nixos/modules/services/development/livebook.md
index 5315f2c2755a..aac9c58d081c 100644
--- a/nixpkgs/nixos/modules/services/development/livebook.md
+++ b/nixpkgs/nixos/modules/services/development/livebook.md
@@ -9,7 +9,7 @@ Enabling the `livebook` service creates a user
 [`systemd`](https://www.freedesktop.org/wiki/Software/systemd/) unit
 which runs the server.
 
-```
+```nix
 { ... }:
 
 {
@@ -51,6 +51,8 @@ some features require additional packages.  For example, the machine
 learning Kinos require `gcc` and `gnumake`.  To add these, use
 `extraPackages`:
 
-```
-services.livebook.extraPackages = with pkgs; [ gcc gnumake ];
+```nix
+{
+  services.livebook.extraPackages = with pkgs; [ gcc gnumake ];
+}
 ```