[Nix-dev] nixpkgs-unstable channel broken?

[Peter Simons]

Hi,

I get the following error message in response to an attempt to update
the channel subscription:

  $ nix-channel --list
  http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable

  $ nix-channel --update
  obtaining list of Nix archives at `http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable/MANIFEST.bz2'...
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  100  529k  100  529k    0     0   393k      0  0:00:01  0:00:01 --:--:--  408k
  2711 store paths in manifest
  downloading Nix expressions from `http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable/nixexprs.tar.bz2'...
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  100 2018k  100 2018k    0     0   437k      0  0:00:04  0:00:04 --:--:--  442k
  unpacking channel Nix expressions...
  store derivation is /nix/store/z20c58b52mka1p3ijvxx8825ldh9fp5q-channels.drv
  the following derivations will be built:
    /nix/store/z20c58b52mka1p3ijvxx8825ldh9fp5q-channels.drv
  building path(s) `/nix/store/36djmp7skrc4g98bjv84y4vmhw9l4sq9-channels'
  unpacking channel nixpkgs-unstable
  bunzip2: (stdin) is not a bzip2 file.
  /nix/store/6w3v9dxd29b0y4k0hnwl17ya28b56y4d-gnutar-1.22/bin/tar: This does not look like a tar archive
  /nix/store/6w3v9dxd29b0y4k0hnwl17ya28b56y4d-gnutar-1.22/bin/tar: Exiting with failure status due to previous errors
  builder for `/nix/store/z20c58b52mka1p3ijvxx8825ldh9fp5q-channels.drv' failed with exit code 2
  error: build of `/nix/store/z20c58b52mka1p3ijvxx8825ldh9fp5q-channels.drv' failed
  cannot unpack the channels at /home/simons/.nix-profile/bin/nix-channel line 130.

Apparently the tar.bz2 file is corrupted? Is that possible?

Take care,
Peter