Commit Graph

9 Commits

Author SHA1 Message Date
Arnout Engelen
0aeba64fb2
squashfs: use -no-hardlinks for reproducible squashfs images (#114454)
the nix store may contain hardlinks: derivations may output them
directly, or users may be using store optimization which automatically
hardlinks identical files in the nix store.

The presence of these links are intended to be a 'transparent'
optimization. However, when creating a squashfs image, the image
will be different depending on whether hard links were present
on the filesystem, leading to reproducibility problems.

By passing '-no-hardlinks' to mksquashfs the files are stored
as duplicates in the squashfs image. Since squashfs has support
for duplicate files this does not lead to a larger image.

For more details see
https://github.com/NixOS/nixpkgs/issues/114331
2021-02-28 18:03:50 +00:00
Danylo Hlynskyi
23a13b562c
kernel config: add support for CONFIG_SQUASHFS_ZSTD (#52967)
Also, allow override `make-squashfs.nix` compression parameters.
2019-01-17 15:24:44 +02:00
Eelco Dolstra
df117acab7
ISO images: Initialize the Nix database with correct NAR hashes/sizes
The boot test now runs "nix verify" to ensure that all hashes are
correct.
2018-02-07 16:54:23 +01:00
Ben Gamari
d680678d0a makeSquashfs: Inputs are nativeBuildInputs 2018-01-09 11:25:19 -05:00
Tuomas Tynkkynen
6ed6d323fe make-squashfs.nix: Improve invalid path check messages
Now the mtime problems are gone, but EC2 Hydra builders are still having
some problems:

https://hydra.nixos.org/build/66043835
2017-12-15 19:57:40 +02:00
Tuomas Tynkkynen
574526d510 make-squashfs: Hack to avoid building images where nixos-install won't run
https://github.com/NixOS/nixpkgs/issues/32242
2017-12-03 03:37:45 +02:00
Lluís Batlle i Rossell
897b10998b Tune mksquashfs for smaller isos.
Bigger block size, more suitable for xz.
2016-12-28 16:07:16 +01:00
Franz Pletz
6de991bd95
nixos: compress squashfs with xz 2016-11-23 02:24:13 +01:00
Eelco Dolstra
5c1f8cbc70 Move all of NixOS to nixos/ in preparation of the repository merge 2013-10-10 13:28:20 +02:00