Use the store directory for the devicetree package containing the
desired DTB when installing to the ESP. This allows for more than one
NixOS generation containing differing DTBs to coexist on the same ESP
(similar to how we can have multiple kernels & initrds). This change
removes the assumption that the filepath passed to `copy_from_file` is a
file that lives at the toplevel of a nix output path (which prior to the
systemd-boot DTB support was the case for the kernel and initrd
derivations).
This adds a new `imageStream` option that can be used in conjunction
with `pkgs.dockerTools.streamLayeredImage` so that the image archive
never needs to be materialized in the `/nix/store`. This greatly
improves the disk utilization for systems that use container images
built using Nix because they only need to store image layers instead of
the full image. Additionally, when deploying the new system and only
new layers need to be built/copied.
This should fix errors where /etc is reported to be busy and thus cannot
be unmounted.
Another solution we can consider if this doesn't work out as we expect
is to forcefully unmount /etc.
I've observed that sometimes the overlay mount unit does not get started
when using wantedBy. requiredBy makes this relationship stricter and if
necessary will restart the initrd-fs.target and thus ensure that when
this target is reached /etc has alredy been mounted. This is in line
with the description of initrd-fs.target in systemd.special:
> Thus, once this target is reached the /sysroot/ hierarchy is fully set up
This was broken by the Rust 1.80 upgrade, and is an old version that
we’d have to patch to keep working.
We have already done the 0.4 → 0.5 update without keeping around
the old version or adding in any additional `stateVersion` logic
in <https://github.com/NixOS/nixpkgs/pull/280221>. As a result,
migration for 0.3 users is going to be a little awkward. I’ve done
my best to provide comprehensive instructions for anyone who hasn’t
already bumped to 0.4.
It is probably a footgun to add `stateVersion` logic for any
package that makes backwards‐incompatible schema changes and only
supports migration from the immediately previous version. Users
won’t get migrated by default and we have to either package and
maintain an endlessly growing list of old versions or add complicated
instructions like this. It’s not really practical for us to support
a significantly better migration story than upstream does.
The mkfs.erofs utility has a lot of output by default that slows down
running tests. We don't need to capture any of the output from
mkfs.erofs, so we can suppress it.
The cgitrc file allows list of values to be set for some keys as
multiple definition lines.
This allows setting multiple "css" files to include or multiple
"readme" branch and file lookup paths to be set.
