common-patterns: document container exclusion

cachix · Jul 24, 2023 · 9b6566c · 9b6566c
1 parent def76d0
commit 9b6566c
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/docs/common-patterns.md b/docs/common-patterns.md
@@ -14,7 +14,7 @@ This example adds Elixir install scripts to `~/.mix/escripts`:
 }
 ```
 
-## How Can I use Rosetta packages?
+## How can I use Rosetta packages?
 
 It's possible to tell Nix to use Intel packages when using macOS ARM:
 
@@ -33,3 +33,15 @@ in {
   ];
 }
 ```
+
+## How to exclude packages from the container?
+
+```nix
+{ pkgs, ... }: {
+  packages = [
+    pkgs.git
+  ] ++ lib.optionals !config.container.isBuilding [
+    pkgs.haskell-language-server
+  ];
+}
+```