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Christian Kauhaus 0c0f068f35
cron: fix crontab(5) and cron job PATH 
Switch off HAVE_SAVED_UIDS since it activates a code path for temporary
privilege dropping which does not work on NixOS.

Vixie-cron's sources ship with two implementations. Unfortunately, the
one activated by HAVE_SAVED_UIDS (using setuid()) does not work on
NixOS. Saved UIDs work only if the program which is using them has the
setuid bit set on its own executable, not if called from a setuid
wrapper (as we do it in NixOS). The other implementation (using
setreuid()) works without problems.

Quote from
<http://stackoverflow.com/questions/8499296/realuid-saved-uid-effective-uid-whats-going-on>:

    If you're euid is root and you change the uid, the privileges gets
    dropped permanently.If effective user id is not root then saved user
    id is never touched and you can regain the root privilege back
    anytime you want in your program.

Also extend the default PATH with NixOS-specific bin directories as
vixie-cron's default is not really usable on NixOS.

Re #16518

Closes #16522
2016-07-02 00:09:07 +02:00
.github PR template: go back to old option name for now 2016-06-29 21:44:05 +02:00
doc Doc: how to install a Python environment 2016-07-01 14:30:18 +02:00
lib transgui: init at 5.0.1-svn-r986 2016-07-01 13:51:47 +03:00
maintainers Fix evaluation error in Qt/KDE packages 2016-06-17 09:47:16 -05:00
nixos nixos/libvirtd: Don't use the --daemon flag now that we use the 'notify' service type 2016-07-01 18:21:42 +02:00
pkgs cron: fix crontab(5) and cron job PATH 2016-07-02 00:09:07 +02:00
.gitignore kde5: consolidate packages into desktops/kde-5 2016-03-01 10:36:00 -06:00
.mention-bot Blacklist jhasse 2016-03-05 23:23:19 +01:00
.travis.yml travis-ci: allow failures on osx until nixpkgs channel is unblocked 2016-06-03 12:08:24 +01:00
.version as always, no newline in .version 2016-02-28 23:39:38 +00:00
COPYING
default.nix Extract the top-level logic out of all-packages.nix into pkgs/top-level/default.nix 2016-03-20 16:28:18 +00:00
README.md README: 15.09 -> 16.03 2016-04-04 14:42:07 -04:00

README.md

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Build Status Issue Stats Issue Stats

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-16.03 for the latest release and nixos-unstable for the latest successful build of master:

% git remote update channels
% git rebase channels/nixos-16.03

For pull-requests, please rebase onto nixpkgs master.

NixOS linux distribution source code is located inside nixos/ folder.

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