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William Woodruff authored
add guard in Formula#file_modified? to prevent git popup add guard in Superenv.bin before calling MacOS::Xcode.version add guard against missing Xcode/CLT in Xcode.uncached_version return nil instread of 0 in uncached_version when Xcode/CLT are not present, to distinguish from linuxbrew behavior checks against pour_bottle? and needs_relocation?, add guard around keg.relocate_install_names to check pour_bottle?/needs_relocation? as well needs_relocation? becomes skip_relocation?, use cellar attr to indicate relocation instead of does_not_need_relocation MacOS.can_build? becomes MacOS.has_apple_developer_tools?
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