{ lib, clangStdenv, clang-sierraHack-stdenv, stdenvNoCC }: let makeBigExe = stdenv: prefix: rec { count = 320; sillyLibs = lib.genList (i: stdenv.mkDerivation rec { name = "${prefix}-fluff-${toString i}"; unpackPhase = '' src=$PWD cat << 'EOF' > ${name}.c unsigned int asdf_${toString i}(void) { return ${toString i}; } EOF ''; buildPhase = '' $CC -std=c99 -shared ${name}.c -o lib${name}.dylib -Wl,-install_name,$out/lib/lib${name}.dylib ''; installPhase = '' mkdir -p "$out/lib" mv lib${name}.dylib "$out/lib" ''; meta.platforms = lib.platforms.darwin; }) count; finalExe = stdenv.mkDerivation { name = "${prefix}-final-asdf"; unpackPhase = '' src=$PWD cat << 'EOF' > main.cxx #include <cstdlib> #include <iostream> ${toString (lib.genList (i: "extern \"C\" unsigned int asdf_${toString i}(void); ") count)} unsigned int (*funs[])(void) = { ${toString (lib.genList (i: "asdf_${toString i},") count)} }; int main(int argc, char **argv) { bool ret; unsigned int i = 0; for (auto f : funs) { if (f() != i++) { std::cerr << "Failed to get expected response from function #" << i << std::endl; return EXIT_FAILURE; } } return EXIT_SUCCESS; } EOF ''; buildPhase = '' $CXX -std=c++11 main.cxx ${toString (map (x: "-l${x.name}") sillyLibs)} -o ${prefix}-asdf ''; buildInputs = sillyLibs; installPhase = '' mkdir -p "$out/bin" mv ${prefix}-asdf "$out/bin" ''; meta.platforms = lib.platforms.darwin; }; }; good = makeBigExe clang-sierraHack-stdenv "good"; bad = makeBigExe clangStdenv "bad"; in stdenvNoCC.mkDerivation { name = "macos-sierra-shared-test"; buildInputs = [ good.finalExe bad.finalExe ]; # TODO(@Ericson2314): Be impure or require exact MacOS version of builder? buildCommand = '' if bad-asdf &> /dev/null then echo "WARNING: bad-asdf did not fail, not running on sierra?" >&2 else echo "bad-asdf should fail on sierra, OK" >&2 fi # Must succeed on all supported MacOS versions good-asdf echo "good-asdf should succeed on sierra, OK" touch $out ''; meta.platforms = lib.platforms.darwin; }