NixOS 16.09 released

Re:NixOS 16.09 released by jxy on Monday October 03, 2016 @06:22PM (#12631855)

If you found out through gdb that your code compiled with -O0 was still somehow optimized by gcc, or if you found out that your gcc did not optimize your code aggressively enough although you gave it -Ofast, check out this issue [0].

[0] https://github.com/NixOS/nixpkgs/issues/18995

Yeah. The devs believed it was okay to make gcc -O2 by default and impossible to override from the command line you gave to gcc.

If you encountered this issue I hope google could quickly bring you to that issue on github. Good luck and don't waste hours to figure out why.

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Re:NixOS 16.09 released by AndyKelley on Monday October 03, 2016 @10:10PM (#12632858)

Meanwhile, if you were me, you spent weeks wondering what was happening before finally tracking the problem down and filing the issue :-)

I still love NixOS! A little hiccup here and there but it's still a great idea that I am happy to support.

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Re:NixOS 16.09 released by secure on Monday October 03, 2016 @06:26PM (#12631887)

Related: enabling debug symbols for all packages by default (in a separated output): https://github.com/NixOS/nixpkgs/issues/18530

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Re:NixOS 16.09 released by oever on Tuesday October 04, 2016 @02:20AM (#12633622)

Having debug symbols enabled should be the default in my opinion. Especially in a partially self-compiled distribution like NixOS. The threshold to submitting bugs should be low.

Unf I'm seeing a unicorn (GitHub fail whale) currently, so I cannot see the issue.

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Re:NixOS 16.09 released by grhmc on Monday October 03, 2016 @07:58PM (#12632360)

It looks like there is a workaround. I'm sorry this broke your optimizations :(

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