morph

Supports multi-host deployments with host filtering, tagging, and selective rollouts via glob patterns and limits, enabling controlled updates across server fleets as shown in the examples.

Implements command-based and HTTP-based health checks, plus experimental pre-deploy checks, to validate system readiness before activating changes, reducing deployment risks.

Uses SCP to upload sensitive files without storing them in the Nix store, with automatic directory creation, enhancing security for deployment secrets as detailed in the secrets example.

Operates without persistent state, relying solely on Nix expressions and SSH connections, which simplifies the tool and avoids state management overhead.