Branch: refs/heads/staging
  Home:   https://github.com/NixOS/nixpkgs
  Commit: f31fbadac38df98932df1f4c69b696aed3b6b5d9
      
https://github.com/NixOS/nixpkgs/commit/f31fbadac38df98932df1f4c69b696aed3b6b5d9
  Author: Eelco Dolstra <[email protected]>
  Date:   2016-01-05 (Tue, 05 Jan 2016)

  Changed paths:
    M pkgs/stdenv/generic/setup.sh

  Log Message:
  -----------
  Set a fallback default value for SOURCE_DATE_EPOCH

This is used by some build tools to provide reproducible builds. See

  https://reproducible-builds.org/specs/source-date-epoch/

for more info.

Later, we'll want to set this to a more intelligent value (such as the
most recent mtime of any source file).


  Commit: 0db7ccb5c6fca69b0d68f67d576a8c801d9a712f
      
https://github.com/NixOS/nixpkgs/commit/0db7ccb5c6fca69b0d68f67d576a8c801d9a712f
  Author: Eelco Dolstra <[email protected]>
  Date:   2016-01-05 (Tue, 05 Jan 2016)

  Changed paths:
    M pkgs/development/compilers/gcc/4.9/default.nix
    M pkgs/development/compilers/gcc/5/default.nix
    A pkgs/development/compilers/gcc/use-source-date-epoch.patch

  Log Message:
  -----------
  gcc: Respect $SOURCE_DATE_EPOCH


  Commit: 2b5ed580993b7276f21f55a5d31f8edf0fc155a1
      
https://github.com/NixOS/nixpkgs/commit/2b5ed580993b7276f21f55a5d31f8edf0fc155a1
  Author: Eelco Dolstra <[email protected]>
  Date:   2016-01-05 (Tue, 05 Jan 2016)

  Changed paths:
    M pkgs/build-support/cc-wrapper/cc-wrapper.sh

  Log Message:
  -----------
  cc-wrapper: Don't mess with __DATE__ and __TIME__

This is handled by $SOURCE_DATE_EPOCH now.


  Commit: 81e530a7499e3f06bec13b6ec974d0f1e3a4ab84
      
https://github.com/NixOS/nixpkgs/commit/81e530a7499e3f06bec13b6ec974d0f1e3a4ab84
  Author: Eelco Dolstra <[email protected]>
  Date:   2016-01-05 (Tue, 05 Jan 2016)

  Changed paths:
    A pkgs/build-support/setup-hooks/set-source-date-epoch-to-latest.sh
    M pkgs/stdenv/generic/default.nix

  Log Message:
  -----------
  Set SOURCE_DATE_EPOCH to latest source file

This provides a timestamp that's more useful than 1970-01-01 yet still
deterministic.


Compare: https://github.com/NixOS/nixpkgs/compare/b1acaffe67af...81e530a7499e
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