nixpkgs/pkgs/tools/system/cron/default.nix

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{stdenv, fetchurl, sendmailPath ? "/usr/sbin/sendmail"}:
stdenv.mkDerivation {
name = "cron-4.1";
src = fetchurl {
url = ftp://ftp.isc.org/isc/cron/cron_4.1.shar;
md5 = "5e1be9dbde66295821ac7899f2e1f561";
};
unpackCmd = "(mkdir cron && cd cron && sh $curSrc)";
preBuild = ''
substituteInPlace Makefile --replace ' -o root' ' ' --replace 111 755
makeFlags="DESTROOT=$out"
# We want to ignore the $glibc/include/paths.h definition of
# sendmail path
echo "#undef _PATH_SENDMAIL" >> pathnames.h
echo '#define _PATH_SENDMAIL "${sendmailPath}"' >> pathnames.h
'';
preInstall = "mkdir -p $out/bin $out/sbin $out/share/man/man1 $out/share/man/man5 $out/share/man/man8";
meta = {
description = "Daemon for running commands at specific times (Vixie Cron)";
};
}