This includes disabling some features in the initrd by default, this is
only done when the new initrd is used. Namely, ext and bcache are
disabled by default. bcache gets an own enable option while ext is
detected like any other filesystem.
UEFI firmware does not have to be able to read ISO9660 filesystems, so
the El Torito mechanism provides a way to specify an embedded FAT32
image which contains files the UEFI firmware itself must be able to
read, such as UEFI executables. Once GRUB starts and reads its
configuration, it can access the ISO9660 filesystem to load other files.
This change removes the unused kernel, initrd, and GRUB font files from
the El Torito image, but keeps the GRUB configuration and UEFI
executables. These files have been present since EFI support was
originally introduced in commit 097c656. Other distribution ISOs, such
as Ubuntu 20.04, Fedora 35, and Windows 10 work this way too. This saves
24MiB on x86_64 and 61MiB on aarch64 ISOs.
This module exposes a config.system.build.kexecBoot attribute,
which returns a directory with kernel, initrd and a shell script
running the necessary kexec commands.
It's meant to be scp'ed to a machine with working ssh and kexec binary
installed.
This is useful for (cloud) providers where you can't boot a custom image, but
get some Debian or Ubuntu installation.
Not entirely sure when it got broken this time, but when creating a VM
network with `nixos-build-vms(8)`, there are should be the following scripts:
* `$out/bin/nixos-test-driver` which drops into an interactive shell to
interactively perform test steps.
* `$out/bin/nixos-run-vms` which non-interactively starts the VMs from
the network so that one can manually play around in the VM.
The latter also starts an interactive shell for a while now which means
that it does the exact same thing as `nixos-test-driver` which is not
its purpose.
The live image is primarily used for installation so we should make
link to manual as well as other useful tools front and center,
instead of having them buried in the app drawer.
The default GNOME apps can still be found there when the ISO
is used for demonstration purposes.
The `nix.*` options, apart from options for setting up the
daemon itself, currently provide a lot of setting mappings
for the Nix daemon configuration. The scope of the mapping yields
convience, but the line where an option is considered essential
is blurry. For instance, the `extra-sandbox-paths` mapping is
provided without its primary consumer, and the corresponding
`sandbox-paths` option is also not mapped.
The current system increases the maintenance burden as maintainers have to
closely follow upstream changes. In this case, there are two state versions
of Nix which have to be maintained collectively, with different options
avaliable.
This commit aims to following the standard outlined in RFC 42[1] to
implement a structural setting pattern. The Nix configuration is encoded
at its core as key-value pairs which maps nicely to attribute sets, making
it feasible to express in the Nix language itself. Some existing options are
kept such as `buildMachines` and `registry` which present a simplified interface
to managing the respective settings. The interface is exposed as `nix.settings`.
Legacy configurations are mapped to their corresponding options under `nix.settings`
for backwards compatibility.
Various options settings in other nixos modules and relevant tests have been
updated to use structural setting for consistency.
The generation and validation of the configration file has been modified to
use `writeTextFile` instead of `runCommand` for clarity. Note that validation
is now mandatory as strict checking of options has been pushed down to the
derivation level due to freeformType consuming unmatched options. Furthermore,
validation can not occur when cross-compiling due to current limitations.
A new option `publicHostKey` was added to the `buildMachines`
submodule corresponding to the base64 encoded public host key settings
exposed in the builder syntax. The build machine generation was subsequently
rewritten to use `concatStringsSep` for better performance by grouping
concatenations.
[1] - https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md
since fc614c37c6 nixos needs access to its
own path (<nixpkgs/nixos>) to evaluate a system with documentation.
since documentation is enabled by default almost all systems need such
access, including the installer tests. nixos-install however does not
ensure that a channel exists in the target store before evaluating the
system in that store, which can lead to `path is not valid` errors.
`mktemp` tries to use the `TMPDIR` from `nixos-install` outside of the
`chroot` instead of `/tmp` inside the `chroot` and fails. For some
reason the `TMPDIR` is being passed through the `chroot` call.
I haven't tested if other environment variables are being passed through
that shouldn't be.
This commit encapsulates the involved domain into classes and
defines explicit and typed arguments where untyped dicts where used.
It preserves backwards compatibility through legacy wrappers.
so the underlaying use case of the preceding commit is so
generic, that we gain a lot in reasoning to give it an
appropriate name.
As the comment states:
image media needs to override host config short of mkForce
https://github.com/NixOS/nixpkgs/pull/131760 was made to avo
a speicific configuration conflict that errored out for multiple definitions of "/" when the installer where overlayed
on any existing host configuration.
---
Problem 1: It turns out that in also other mountpoints can coflict.
Solution 1: use `mkOverride 60` for all mountpoints (even for the ones unlikely causing confilct for consistency sake)
---
Problem 2: It turns out that on an installation media for a fresh machine (before formatting), we usually don't have any devices yet formatted. However defining for example `fileSystems.<nme>.device = "/dev/disk/by-label/...", in newer versions of nixos, seems to make the system startup fail. Similarily waiting for a non-existent swap device does not make the startup fail, but has a 1:30 min timeout.
Solution 2: For an installation medium, soft-override ("unless users know what they are doing") the entire `fileSystems` and `swapDevices` definitions.
installer media can be used on top of existing host configs. In such
scenarions, root fs types will already be defined.
Before this change, this will inevitably lead to the following error:
```console
error: The option `fileSystems./.fsType' has conflicting definition values:
- In `/nix/store/2nl5cl4mf6vnldpbxhrbzfh0n8rsv9fm-source/DevOS/os/hardware/common.nix': "ext4"
- In `/nix/store/jbch90yqx6gg1h3fq30jjj2b6h6jfjgs-source/nixos/modules/installer/cd-dvd/iso-image.nix': "tmpfs"
```
With this patch, the installers will override those values according to
their own local requirement.
Use `mkOverride 60` so that conscientious overriding specially targeted
at the installer, e.g. with `mkForce` is still straight forward.
Different boards using u-boot SPL require to write to different
locations. Sometimes, the 8MiB gap isn't sufficient - rk3399 boards
write to 0x16384 for example, which is at 8MiB, thus overriding the
fat32 partition with the SPL.
This should help in rare hardware-specific situations where the root is
not automatically detected properly.
We search using a marker file. This should help some weird UEFI setups
where the root is set to `(hd0,msdos2)` by default.
Defaulting to `(hd0)` by looking for the ESP **will break themeing**. It
is unclear why, but files in `(hd0,msdos2)` are not all present as they
should be.
This also fixes an issue introduced with cb5c4fcd3c
where rEFInd stopped booting in many cases. This is because it ended up
using (hd0) rather than using the `search` which was happening
beforehand, which in turn uses (hd0,msdos2), which is the ESP.
Putting back the `search` here fixes that.
This technically changes nothing. In practice `$root` is always the
"CWD", whether searched for automatically or not.
But this serves to announce we are relying on `$root`... I guess...
The value of du output depends on the underlying file system, and thus is not fully deterministic. This workaround rounds up the disk usage size to the nearest multiple of 1MB, to increase the probability that two du output values on two different file systems fall within the same 1MB window. Note that this workaround won't make du output 100% reproducible, but will increase the probability of getting deterministic builds across different file systems.
mcopy file globbing is non-deterministic with respect to the underlying file
system. As a result, the current mcopy approach is less likely to reproduce
efi.img on different machines. We replace mcopy file globbing with
fixed-order mmd and mcopy operations for better determinism. We also use
faketime on mmd for the same reason. We use faketime, mmd, and mcopy
directly, becase they are already in PATH.
Thank misuzu@ for the feedback.
This reverts commit 6f6b2cdc98.
Version wasn't updated, and apparently a patch didn't apply. Let's do
this upgrade properly, in a PR, but for now I'm reverting so we don't
have a broken nix package in master.
Looks like GRUB has issues loading EFI binaries from (cd0), which is
what would be used in e.g. qemu with OVMF with `-cdrom`. Apparently also
what is used with AArch64 + U-Boot USB.
The serial output (but it's named console, not serial actually) causes
issues on U-Boot's EFI, at the very least.
This is inspired by OpenSUSE's approach:
* https://build.opensuse.org/package/view_file/Base:System/grub2/grub2-SUSE-Add-the-t-hotkey.patch
Where they add a hidden menu entry, which can be used to force the
console output.
The `echo` will be visible on the serial terminal (grub "console"),
while the graphical interface is shown. Note that input in the serial
terminal (grub "console") will continue controlling the graphical
interface. Useful if you have an SBC connectedinto an HDMI monitor, but
no keyboard connected to it.
