# Ansible Role: Seriatim

Installs [Seriatim](https://gitea.maximumdirect.net/eric/seriatim) from source
on Ubuntu 26.04 (`x86_64` or `aarch64`). The role requires gathered facts and
uses privilege escalation on tasks that install dependencies or manage
root-owned application state.

## Variables

```yaml
seriatim_version: v1.5.0
seriatim_repository_url: https://gitea.maximumdirect.net/eric/seriatim.git
seriatim_source_dir: /usr/local/src/seriatim
seriatim_binary_path: /usr/local/bin/seriatim
seriatim_manage_build_dependencies: true
seriatim_go_snap_channel: 1.26/stable
seriatim_go_binary: /snap/bin/go
```

When `seriatim_manage_build_dependencies` is `false`, Git and the executable
selected by `seriatim_go_binary` must already be available. Otherwise, the role
installs Git with APT and the classic Go Snap from
`seriatim_go_snap_channel`.

The checkout is authoritative: local source changes are discarded while
selecting `seriatim_version`. The role builds `./cmd/seriatim` directly to
`seriatim_binary_path` using `seriatim_go_binary`, `CGO_ENABLED=0`, `GOWORK=off`,
`GOTOOLCHAIN=local`, `-trimpath`, and release linker metadata. It rebuilds when
the checkout changes or the binary is absent. Exact version output is verified
by the repository-local integration suite rather than during production
convergence.

The source tree is recursively owned by `root:root`. The installed binary is a
regular file owned by `root:root` with mode `0755`.

## Example

```yaml
- hosts: seriatim_hosts
  roles:
    - role: ansible-role-seriatim
```

## Validation

The integration driver installs pinned collection dependencies, runs syntax
checking and ansible-lint, and covers default smoke use with clean repeated
convergence. It also verifies an explicitly selected Seriatim release and
combines missing-binary recovery with a caller-supplied Go executable while
dependency management is disabled. The suite mutates only
`/usr/local/src/seriatim`, `/usr/local/bin/seriatim`, and paths inside its
private temporary directory, and restores the default deployment during
cleanup:

```sh
tests/integration
```