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

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{ lib, stdenv, fetchFromGitHub, fetchpatch, cmake
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}:
stdenv.mkDerivation rec {
pname = "nlohmann_json";
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version = "3.9.1";
src = fetchFromGitHub {
owner = "nlohmann";
repo = "json";
rev = "v${version}";
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sha256 = "sha256-THordDPdH2qwk6lFTgeFmkl7iDuA/7YH71PTUe6vJCs=";
};
patches = [
# https://github.com/nlohmann/json/pull/2690
(fetchpatch {
url = "https://github.com/nlohmann/json/commit/53a9850eebb88c6ff95f6042d08d5c0cc9d18097.patch";
sha256 = "k+Og00nXNg5IsFQY5fWD3xVQQXUFFTie44UXole0S1M=";
})
];
nativeBuildInputs = [ cmake ];
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cmakeFlags = [
"-DBuildTests=${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 lib; {
description = "Header only C++ library for the JSON file format";
homepage = "https://github.com/nlohmann/json";
license = licenses.mit;
platforms = platforms.all;
};
}