Commits on Jan 15, 2020

1. stdenv: make symlinks that refer to the same output relative …

   While looking at the graph of all the outputs in my personal binary
   cache it became obvious that we have a lot of self references within the
   package set. That isn't an isuse by itself. However it increases the
   size of the binary cache for every (reproducible) build of a package
   that carries references to itself. You can no longer deduplicate the
   outputs since they are all unique. One of the ways to get rid of (a few)
   references is to rewrite all the symlinks that are currently used to be
   relative symlinks. Two build of something that didn't really change but
   carries a self-reference can the be store as the same NAR file again.
   
   I quickly hacked together this change to see if that would yield and
   success. My bash scripting skills are probably not great but so far it
   seem to somewhat work.

   

   andir authored and FRidh committed Jan 15, 2020
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