nixpkgs/pkgs/os-specific/linux/fatrace/default.nix

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{ stdenv, fetchurl, python3, which }:
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let version = "0.10"; in
stdenv.mkDerivation rec {
name = "fatrace-${version}";
src = fetchurl {
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url = "http://launchpad.net/fatrace/trunk/${version}/+download/${name}.tar.bz2";
sha256 = "0q0cv2bsgf76wypz18v2acgj1crcdqhrhlsij3r53glsyv86xyra";
};
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buildInputs = [ python3 which ];
postPatch = ''
substituteInPlace power-usage-report \
--replace "'which'" "'${which}/bin/which'"
'';
makeFlagsArray = "PREFIX=$(out)";
meta = with stdenv.lib; {
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inherit version;
description = "Report system-wide file access events";
homepage = https://launchpad.net/fatrace/;
license = with licenses; gpl3Plus;
longDescription = ''
fatrace reports file access events from all running processes.
Its main purpose is to find processes which keep waking up the disk
unnecessarily and thus prevent some power saving.
Requires a Linux kernel with the FANOTIFY configuration option enabled.
Enabling X86_MSR is also recommended for power-usage-report on x86.
'';
maintainers = with maintainers; [ nckx ];
platforms = with platforms; linux;
};
}