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 splits a dev output to make the default output not depend on any
build dependencies anymore. This also avoids removing references from
pgxs' Makefile this way, which should, at least theoretically, be good
to build extensions via pgxs, making sure they use the same tooling.
ecpg is the "embedded SQL C preprocessor", which is certainly a dev
tool.
Most important, for closure size anyway, is to move pg_config to the dev
output, since it retains paths to all the other outputs.
The only thing with references to the dev output remaining is then the
postgres binary itself. It contains all the output paths, because it
shows those in the pg_config system view. There is no other way than
to nuke those references to avoid circular dependencies between outputs
- and blowing up closure size again.
provision # [ 8.223448] (kanidmd)[819]: kanidm.service: Failed to set up mount namespacing: /ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/ofborg-evaluator-1/nixos/tests/common/acme/server:
No such file or directory
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.
