Customize derivation that uses cmake

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1

Hi, I want to use the cyclonedds derivation, but I want to change which flags it enables during configuration. Can I do this, or do I need to copy + modify the derivation?

2

Yes, this is simple to do with overrideAttrs:

cyclonedds.overrideAttrs {
  cmakeFlags = [ "-DSOME_FLAG=ON" ];
}

Some prefer lib.cmakeBool and lib.cmakeFeature for assembling the flag syntax.

cyclonedds.overrideAttrs {
  cmakeFlags = [ (lib.cmakeBool "SOME_FLAG" true) ];
}
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