skye
fce5777f9c
A significant part of #1136. This is a rather large cl, because all of the primops need to be changed together. Change-Id: I7d92698d5344bd6186ee4fa47f5c21966a6a6964
47 lines
920 B
C++
47 lines
920 B
C++
#include "lix/libutil/config.hh"
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#include "lix/libexpr/primops.hh"
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#include <stdlib.h>
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using namespace nix;
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#ifdef MISSING_REFERENCE
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extern void meow();
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#else
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#define meow() {}
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#endif
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struct MySettings : Config
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{
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Setting<bool> settingSet{this, false, "setting-set",
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"Whether the plugin-defined setting was set"};
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};
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bool entryCalled = false;
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MySettings mySettings;
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[[gnu::used, gnu::unused, gnu::retain]]
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static void maybeRequireMeowForDlopen() {
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meow();
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}
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static Value prim_anotherNull(EvalState & state, Value ** args)
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{
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assert(entryCalled);
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if (mySettings.settingSet)
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return Value::VNULL;
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else
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return {NewValueAs::boolean, false};
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}
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extern "C" void nix_plugin_entry()
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{
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PluginPrimOps::add({
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.name = "anotherNull",
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.arity = 0,
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.fun = prim_anotherNull,
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});
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GlobalConfig::registerGlobalConfig(mySettings);
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entryCalled = true;
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}
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