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

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{ stdenv, fetchgit }:
stdenv.mkDerivation rec {
pname = "datefudge";
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version = "1.22";
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name = "${pname}-${version}";
src = fetchgit {
url = "https://salsa.debian.org/debian/datefudge.git";
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rev = "fe27db47a0f250fb56164114fff8ae8d5af47ab6";
sha256 = "1fmd05r00wx4zc90lbi804jl7xwdl11jq2a1kp5lqimk3yyvfw4c";
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};
patchPhase = ''
substituteInPlace Makefile \
--replace "/usr" "/" \
--replace "-o root -g root" ""
substituteInPlace datefudge.sh \
--replace "@LIBDIR@" "$out/lib/"
'';
preInstallPhase = "mkdir -P $out/lib/datefudge";
installFlags = [ "DESTDIR=$(out)" ];
postInstall = "chmod +x $out/lib/datefudge/datefudge.so";
meta = with stdenv.lib; {
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 ];
};
}