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2013-07-01 Add support for uncompressed NARs in binary cachesEelco Dolstra1-8/+11
Issue NixOS/hydra#102.
2012-07-01 Fix xz compressionEelco Dolstra1-3/+3
2012-07-01 Allow both bzip2 and xz compressionEelco Dolstra1-5/+13
2012-06-29 Use XZ compression in binary cachesEelco Dolstra1-4/+5
XZ compresses significantly better than bzip2. Here are the compression ratios and execution times (using 4 cores in parallel) on my /var/run/current-system (3.1 GiB): bzip2: total compressed size 849.56 MiB, 30.8% [2m08] xz -6: total compressed size 641.84 MiB, 23.4% [6m53] xz -7: total compressed size 621.82 MiB, 22.6% [7m19] xz -8: total compressed size 599.33 MiB, 21.8% [7m18] xz -9: total compressed size 588.18 MiB, 21.4% [7m40] Note that compression takes much longer. More importantly, however, decompression is much faster: bzip2: 1m47.274s xz -6: 0m55.446s xz -7: 0m54.119s xz -8: 0m52.388s xz -9: 0m51.842s The only downside to using -9 is that decompression takes a fair amount (~65 MB) of memory.
2012-05-09 Disable building in chroot for Nix's corepkgsEelco Dolstra1-0/+3
The dependencies of the corepkgs are not necessarily in the chroot (or in the Nix store), so don't build them in a chroot.
2012-04-14 Remove unnecessary "system" argumentEelco Dolstra1-2/+3
2012-01-03 * Refactoring: Get rid of a few subdirectories in corepkgs/, and someEelco Dolstra1-0/+30
other simplifications. * Use <nix/...> to locate the corepkgs. This allows them to be overriden through $NIX_PATH. * Use bash's pipefail option in the NAR builder so that we don't need to create a temporary file.