On 08/14/2016 04:13 PM, Ronny Pfannschmidt wrote:
> on nix it is a regular problem for me that zip file generating tools fail
> due to the epoch time being set to a time that's not supported in the
> zip format
> (mostly python wheels)
> 
> i would like to propose setting that epoch by default to something that
> is supported by zip

We discussed that zip problems aren't that bad to change timestamps of
/nix/store paths directly (1.1. 1970).

For python and similar we have a hook that touches source files after
"unpacking" phase - the typical problem is after fetch* other than
fetchurl. Typical usage:
  buildInputs = [ (ensureNewerSourcesHook { year = "1980"; }) ]

Note that our generic python builder already does use the hook
automatically.

--Vladimir


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