[Nix-dev] Updating from old nixos

[Lluís Batlle]

Hello,

I have a nixos with nix-env (Nix) 0.13pre13641.
How can I update it?

Among others, on nixos-rebuild build, at the stage updating nix, it gets:

*** Trying to download/patch
`/nix/store/k4c2wq1nkjb69jnnkcjrjrfc10iih06x-linux-headers-2.6.28.5'
Use of uninitialized value in concatenation (.) or string at
/nix/store/mq03np7nd851r59f3s8380djy31d66w4-nix-0.13pre13641/libexec/nix/substituters/download-using-manifests.pl
line 205.
...
######################################################################## 100.0%
hash mismatch, expected , got 2fe446f63d45ea56cc67404de765ff02 at
/nix/store/mq03np7nd851r59f3s8380djy31d66w4-nix-0.13pre13641/libexec/nix/substituters/download-using-manifests.pl
line 272.


also nixFallback fails.