[Nix-dev] Binary cache failures

[Peter Simons]

Hi guys,

in the last couple of days, I've been getting errors like this one
fairly regularly:

 | $ nix-env -iA haskellPackages_ghc762.zeromq3Haskell
 | installing `haskell-zeromq3-haskell-ghc7.6.2-0.3.1'
 | these derivations will be built:
 |   /nix/store/5nnfj6xlkawp9jqxw03k3acy4ic327nz-haskell-zeromq3-haskell-ghc7.6.2-0.3.1.drv
 |   /nix/store/zvrcsgzv01sk0ipmrz9z6n5pgwbk9d4y-haskell-checkers-ghc7.6.2-0.3.1.drv
 | these paths will be fetched (0.05 MiB download, 0.42 MiB unpacked):
 |   /nix/store/yrwnszzsfzw83ay45x2rfyf90syk9y28-haskell-MonadCatchIO-transformers-ghc7.6.2-0.3.0.0
 | fetching path `/nix/store/yrwnszzsfzw83ay45x2rfyf90syk9y28-haskell-MonadCatchIO-transformers-ghc7.6.2-0.3.0.0'...
 |
 | *** Downloading ‘http://nixos.org/binary-cache/nar/0mxy5d62gcxfl0y6210x75pzvlik54inyq5ygmsmjmclrf9jy770.nar.bz2’ to ‘/nix/store/yrwnszzsfzw83ay45x2rfyf90syk9y28-haskell-MonadCatchIO-transformers-ghc7.6.2-0.3.0.0’...
 |   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
 |                                  Dload  Upload   Total   Spent    Left  Speed
 |   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
 | curl: (22) The requested URL returned error: 404 Not Found
 |
 | bzip2: Compressed file ends unexpectedly;
 |         perhaps it is corrupted?  *Possible* reason follows.
 | bzip2: Inappropriate ioctl for device
 |         Input file = (stdin), output file = (stdout)
 |
 | It is possible that the compressed file(s) have become corrupted.
 | You can use the -tvv option to test integrity of such files.
 |
 | You can use the `bzip2recover' program to attempt to recover
 | data from undamaged sections of corrupted files.
 |
 | error: unexpected end-of-file
 | download of `http://nixos.org/binary-cache/nar/0mxy5d62gcxfl0y6210x75pzvlik54inyq5ygmsmjmclrf9jy770.nar.bz2' failed: No such file or directory
 | could not download ‘/nix/store/yrwnszzsfzw83ay45x2rfyf90syk9y28-haskell-MonadCatchIO-transformers-ghc7.6.2-0.3.0.0’ from any binary cache
 | error: unexpected EOF reading a line

This looks like the information served by nixos.org is incoherent. Does
anyone know where these errors come from?

Take care,
Peter