[Nix-dev] Sharing the Nix store between systems

[Rickard Nilsson]

Hi,

I would like to put /nix/store in a central NFS share, and let all my  
NixOS computers mount it over the network. This would save disk space and  
make new computer deploys simple.

However there are some things that I don't know how to handle.

* How can I in NixOS specify which user that should do the builds? I would  
like to use users and groups defined in a central LDAP catalog, and not  
let NixOS create any local build users/groups.

* How would I stop Nix on one host from removing contents from the store  
that is used by other hosts?

* Is there a way to also throw a build server into the picture, so that  
NixOS computers can ask the build server to build store paths, which would  
then be put on the NFS share directly by the build server?


Best regards,
   Rickard Nilsson