document how to update a flakes legacyPackages

Signed-off-by: Paul Meyer <[email protected]>
Mic92 · Feb 19, 2024 · b51dd85 · b51dd85
1 parent 37e9b32
commit b51dd85
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -73,7 +73,8 @@ $ nix-update attribute --flake [--version version]
 
 `nix-update` will than try to update either the
 `packages.{currentSystem}.{attribute}` or `{attribute}` output attribute of the
-given flake.
+given flake. To update a package in `legacyPackages`, pass the full path to that
+package including the platform: `legacyPackages.{platform}.{attribute}`.
 
 This example will fetch the latest github release: