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Intel Integrated Performance Primitives (IPP) speeds up parts of OpenCV on Intel processors (and compatible). It increases the store path from 220 MiB to 300 MiB, so it defaults to off. Original patch from Bas van Dijk <v.dijk.bas@gmail.com>. I tried applying the same change to opencv(2.x). OpenCV 2.x didn't automatically detect IPP, so I reverted the change.
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels git://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-14.12 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-14.12
For pull-requests, please rebase onto nixpkgs master.
NixOS linux distribution source code is located inside
nixos/ folder.
- NixOS installation instructions
- Documentation (Nix Expression Language chapter)
- Manual (How to write packages for Nix)
- Manual (NixOS)
- Continuous package builds for unstable/master
- Continuous package builds for 14.12 release
- Continuous package builds for 15.09 release
- Tests for unstable/master
- Tests for 14.12 release
- Tests for 15.09 release
Communication: