Speed up build by using gzip instead of xz#176
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Since we're not going to upload the source packages the build process creates, there's no sense in sacrificing time for better compression ratios. Instead, we'll use gzip at the default compression value (6), which is a lot faster and produces files that are 40% larger than what xz produces. We'll continue to use xz on the binary package files; it's just the orig.tar.xz (now orig.tar.gz) files where we want to use lower compression to save time because they're so large.
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Since we're not going to upload the source packages the build process creates, there's no sense in sacrificing time for better compression ratios. Instead, we'll use gzip at the default compression value (6), which is a lot faster and produces files that are 40% larger than what xz produces. We'll continue to use xz on the binary package files; it's just the orig.tar.xz (now orig.tar.gz) files where we want to use lower compression to save time because they're so large.
On my local machine, the build process for one .deb package went from taking 7:55 to taking 4:06. That's almost half the time. Well worth it for a 40% increase in the size of a file that will not be uploaded anywhere.
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