pyrox.dev
1{ stdenv, squashfsTools, closureInfo
2
3, # The root directory of the squashfs filesystem is filled with the
4 # closures of the Nix store paths listed here.
5 storeContents ? []
6}:
7
8stdenv.mkDerivation {
9 name = "squashfs.img";
10
11 nativeBuildInputs = [ squashfsTools ];
12
13 buildCommand =
14 ''
15 closureInfo=${closureInfo { rootPaths = storeContents; }}
16
17 # Also include a manifest of the closures in a format suitable
18 # for nix-store --load-db.
19 cp $closureInfo/registration nix-path-registration
20
21 # Generate the squashfs image.
22 mksquashfs nix-path-registration $(cat $closureInfo/store-paths) $out \
23 -keep-as-directory -all-root -b 1048576 -comp xz -Xdict-size 100%
24 '';
25}