
Forces `$CXX` back to the correct value so it doesn't just assume `g++`. Also rewrites the derivation to use the standard `buildPhase`, and properly call the `preInstall` and `postInstall` hooks.
Forces `$CXX` back to the correct value so it doesn't just assume `g++`. Also rewrites the derivation to use the standard `buildPhase`, and properly call the `preInstall` and `postInstall` hooks.