mirror of
https://github.com/NixOS/mobile-nixos.git
synced 2024-12-01 03:32:26 +03:00
84 lines
2.6 KiB
Nix
84 lines
2.6 KiB
Nix
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# This builds a rootfs image (ext4) from the current configuration.
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{ config, lib, pkgs, ... }:
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{
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boot.loader.grub.enable = false;
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boot.loader.generic-extlinux-compatible.enable = false;
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system.build.rootfs =
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pkgs.imageBuilder.fileSystem.makeExt4 {
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name = "NIXOS_SYSTEM";
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partitionID = "44444444-4444-4444-8888-888888888888";
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populateCommands =
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let
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closureInfo = pkgs.buildPackages.closureInfo { rootPaths = config.system.build.toplevel; };
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in
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''
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mkdir -p ./nix/store
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echo "Copying system closure..."
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while IFS= read -r path; do
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echo " Copying $path"
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cp -prf "$path" ./nix/store
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done < "${closureInfo}/store-paths"
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echo "Done copying system closure..."
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cp -v ${closureInfo}/registration ./nix-path-registration
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'';
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# FIXME : fixup the partition autoexpand.
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extraPadding = pkgs.imageBuilder.size.MiB 500;
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}
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;
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# FIXME: this is not a rootfs!
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system.build.diskImage =
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pkgs.imageBuilder.diskImage.makeMBR {
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name = "mobile-nixos";
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diskID = "01234567";
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partitions = [
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# FIXME : initrd how?
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config.system.build.rootfs
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];
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}
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;
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#pkgs.runCommandNoCC "mobile-nixos-rootfs" {} ''
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# echo "${config.system.build.toplevel}" > $out
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#'';
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boot.postBootCommands = ''
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# On the first boot do some maintenance tasks
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if [ -f /nix-path-registration ]; then
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${""
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# TODO : optionally resize NIXOS_SYSTEM, depending on the target.
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# # Figure out device names for the boot device and root filesystem.
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# rootPart=$(readlink -f /dev/disk/by-label/NIXOS_SYSTEM)
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# bootDevice=$(lsblk -npo PKNAME $rootPart)
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# # Resize the root partition and the filesystem to fit the disk
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# echo ",+," | sfdisk -N2 --no-reread $bootDevice
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# ${pkgs.parted}/bin/partprobe
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# ${pkgs.e2fsprogs}/bin/resize2fs $rootPart
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}
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# Register the contents of the initial Nix store
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${config.nix.package.out}/bin/nix-store --load-db < /nix-path-registration
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# nixos-rebuild also requires a "system" profile and an /etc/NIXOS tag.
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touch /etc/NIXOS
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${config.nix.package.out}/bin/nix-env -p /nix/var/nix/profiles/system --set /run/current-system
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# Prevents this from running on later boots.
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rm -f /nix-path-registration
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fi
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'';
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fileSystems = {
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"/" = {
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# Expected to be installed as `system` partition on android-like.
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# Thus the name.
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# TODO: move into the android system type.
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device = "/dev/disk/by-label/NIXOS_SYSTEM";
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fsType = "ext4";
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};
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};
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}
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