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

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{ lib, stdenv, fetchgit, fetchpatch }:
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stdenv.mkDerivation rec {
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pname = "datefudge";
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version = "1.24";
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src = fetchgit {
url = "https://salsa.debian.org/debian/${pname}.git";
rev = "debian/${version}";
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sha256 = "1nh433yx4y4djp0bs6aawqbwk7miq7fsbs9wpjlyh2k9dvil2lrm";
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};
postPatch = ''
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substituteInPlace Makefile \
--replace "/usr" "/" \
--replace "-o root -g root" ""
substituteInPlace datefudge.sh \
--replace "@LIBDIR@" "$out/lib/"
'';
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installFlags = [ "DESTDIR=$(out)" ];
postInstall = "chmod +x $out/lib/datefudge/datefudge.so";
meta = with lib; {
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description = "Fake the system date";
longDescription = ''
datefudge is a small utility that pretends that the system time is
different by pre-loading a small library which modifies the time,
gettimeofday and clock_gettime system calls.
'';
homepage = "https://packages.qa.debian.org/d/datefudge.html";
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license = licenses.gpl2;
platforms = platforms.linux;
maintainers = with maintainers; [ leenaars ];
};
}