Fix macOS PKG installation for Unity 6000+ (cpio payload support)#451
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Fix macOS PKG installation for Unity 6000+ (cpio payload support)#451
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## Description Unity 6000+ PKG installers use cpio-format payloads instead of tar. The macOS installer previously only supported tar, causing installation failures with error "This does not look like a tar archive". ## Changes * [FIX] Add payload format detection for cpio vs tar payloads * [ADD] Implement cpio extraction using `gzip -dc | cpio -id` pipeline * [ADD] `flate2` dependency for gzip decompression on macOS * [UPDATE] CLAUDE.md commit message format guidelines
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Description
Unity 6000+ PKG installers use cpio-format payloads instead of tar. The macOS installer previously only supported tar, causing installation failures with error "This does not look like a tar archive".
Changes
gzip -dc | cpio -idpipelineflate2dependency for gzip decompression on macOS