@startuml
!includeurl https://raw.githubusercontent.com/nott/C4-PlantUML/master/C4_Component.puml

Person(user, "User")

System_Boundary(laptop, "Laptop") {

  Container(filesystem, "File System", "ext4,btrfs,...")

  System_Boundary(psy_daemon, "Psy Daemon") {
      Component(fs_watcher, "File System Watcher", "inotify")
      Component(git_committer, "Git committer", "libgit2")
      Component(git_merger, "Git merger", "libgit2")
      Component(git_syncer, "Git syncer", "libgit2")
  
      git_committer -[hidden]> git_merger
      git_merger -[hidden]> git_syncer
  }
  Container(user_git, "User git repo", "git")
  Container(shadow_git, "Shadow git repo", "git")
}
Container(remote_git, "Remote git repo", "git")
shadow_git -[hidden]-> remote_git

user -[hidden]-> laptop
filesystem -[hidden]-> psy_daemon

Rel(user, filesystem, "make changes")
Rel(fs_watcher, filesystem, "track changes")
Rel(fs_watcher, git_committer, "notify")
Rel(git_committer, user_git, "commit changes")
Rel(git_merger, user_git, "pull,push")
Rel(git_merger, shadow_git, "merge")
Rel(git_syncer, shadow_git, "merge")
Rel(git_syncer, remote_git, "pull,push")

@enduml