nixpkgs/pkgs/development/libraries/nlohmann_json/default.nix

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{ stdenv, fetchFromGitHub, cmake
}:
stdenv.mkDerivation rec {
pname = "nlohmann_json";
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version = "3.7.3";
src = fetchFromGitHub {
owner = "nlohmann";
repo = "json";
rev = "v${version}";
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sha256 = "04rry1xzis71z5gj1ylcj8b4li5q18zxhcwaviwvi3hx0frzxl9w";
};
nativeBuildInputs = [ cmake ];
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enableParallelBuilding = true;
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cmakeFlags = [
"-DBuildTests=${if doCheck then "ON" else "OFF"}"
"-DJSON_MultipleHeaders=ON"
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];
# A test cause the build to timeout https://github.com/nlohmann/json/issues/1816
#doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
doCheck = false;
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postInstall = "rm -rf $out/lib64";
meta = with stdenv.lib; {
description = "Header only C++ library for the JSON file format";
homepage = https://github.com/nlohmann/json;
license = licenses.mit;
platforms = platforms.all;
};
}