(This is a rewritten version of the reverted commit
a927709a35, that disables the creation of
/var/empty during build so that sandboxed builds also works. For more
context, see https://github.com/NixOS/nixpkgs/pull/16966)
If running NixOS inside a container where the host's root-owned files
and directories have been mapped to some other uid (like nobody), the
ssh daemon fails to start, producing this error message:
fatal: /nix/store/...-openssh-7.2p2/empty must be owned by root and not group or world-writable.
The reason for this is that when openssh is built, we explicitly set
`--with-privsep-path=$out/empty`. This commit removes that flag which
causes the default directory /var/empty to be used instead. Since NixOS'
activation script correctly sets up that directory, the ssh daemon now
also works within containers that have a non-root-owned nix store.
If running NixOS inside a container where the host's root-owned files
and directories have been mapped to some other uid (like nobody), the
ssh daemon fails to start, producing this error message:
fatal: /nix/store/...-openssh-7.2p2/empty must be owned by root and not group or world-writable.
The reason for this is that when openssh is built, we explicitly set
`--with-privsep-path=$out/empty`. This commit removes that flag which
causes the default directory /var/empty to be used instead. Since NixOS'
activation script correctly sets up that directory, the ssh daemon now
also works within containers that have a non-root-owned nix store.
For some reason I haven't been able to figure out, sift does not build on OSX.
I think it is because sift uses cgo for some of its functionality which you can
see here:
https://github.com/svent/sift/blob/master/matching_cgo.go#L23
The error which hydra found (and is reproducible on OSX) can be seen here:
https://hydra.nixos.org/build/37169149
Ideally I would like to get sift building on OSX, however my nix-fu is weak.
Any suggestions are welcome. In the meantime I would like to get sift into one
of the release channels for Linux where it works fine.
