[Nix-dev] fossil 1.20 hash difference

[Kevin Quick]

$ nix-env -u fossil
upgrading `fossil-1.19' to `fossil-1.20'
these derivations will be built:
   /nix/store/c9c57bx4f844xbbp9b6kmfqyl1mak01k-fossil-1.20.drv
   /nix/store/pswkfa2imzkiv86fwjvigcnyxr0cllph-fossil-src-20111021125253.tar.gz.drv
building path(s)  
`/nix/store/7nvavh62pg103gjzy4vr65klrny69zxi-fossil-src-20111021125253.tar.gz'

trying http://www.fossil-scm.org/download/fossil-src-20111021125253.tar.gz
   % Total    % Received % Xferd  Average Speed   Time    Time     Time   
Current
                                  Dload  Upload   Total   Spent    Left   
Speed
100 2529k  100 2529k    0     0   157k      0  0:00:16  0:00:16 --:--:--   
169k
output path  
`/nix/store/7nvavh62pg103gjzy4vr65klrny69zxi-fossil-src-20111021125253.tar.gz'  
should have sha256 hash  
`8ff94fab08248df605ea454ace0b391c97936400f3881e85f8cd0f00d8a53ae2',  
instead has  
`636f201f236178ce9a3a9987ed43b0ce849021b2ae872ad71c5ee5780e9fe554'
cannot build derivation  
`/nix/store/c9c57bx4f844xbbp9b6kmfqyl1mak01k-fossil-1.20.drv': 1  
dependencies couldn't be built
error: build of  
`/nix/store/c9c57bx4f844xbbp9b6kmfqyl1mak01k-fossil-1.20.drv' failed

Can anyone else confirm or refute the newer 636f201 hash value, and should  
this derivation be updated?

-- 
-KQ