A few minor changes to get #119638 - nextcloud: add option to set
datadir and extensions - ready:
* `cfg.datadir` now gets `cfg.home` as default to make the type
non-nullable.
* Enhanced the `basic` test to check the behavior with a custom datadir
that's not `/var/lib/nextcloud`.
* Fix hashes for apps in option example.
* Simplify if/else for `appstoreenable` in override config.
* Simplify a few `mapAttrsToList`-expressions in
`nextcloud-setup.service`.
The multipath-tools package had existed in Nixpkgs for some time but
without a nixos module to configure/drive it. This module provides
attributes to drive the majority of multipath configuration options
and is being successfully used in stage-1 and stage-2 boot to mount
/nix from a multipath-serviced iSCSI volume.
Credit goes to @grahamc for early contributions to the module and
authoring the NixOS module test.
Don't worry, it's is true by default. But I think this is important to
have because NixOS indeed shouldn't need Nix at run time when the
installation is not being modified, and now we can verify that.
NixOS images that cannot "self-modify" are a legitamate
use-case that this supports more minimally. One should be able to e.g. do a
sshfs mount and use `nixos-install` to modify them remotely, or just
discard them and build fresh ones if they are run VMs or something.
The next step would be to make generations optional, allowing just
baking `/etc` and friends rather than using activation scripts. But
that's more involved so I'm leaving it out.
The MariaDB version 10.6 doesn't seem supported with current Nextcloud
versions and the test fails with the following error[1]:
nextcloud # [ 14.950034] nextcloud-setup-start[1001]: Error while trying to initialise the database: An exception occurred while executing a query: SQLSTATE[HY000]: General error: 4047 InnoDB refuses to write tables with ROW_FORMAT=COMPRESSED or KEY_BLOCK_SIZE.
According to a support-thread in upstream's Discourse[2] this is because
of a missing support so far.
Considering that we haven't received any bugreports so far - even though
the issue already exists on master - and the workaround[3] appears to
work fine, an evaluation warning for administrators should be
sufficient.
[1] https://hydra.nixos.org/build/155015223
[2] https://help.nextcloud.com/t/update-to-next-cloud-21-0-2-has-get-an-error/117028/15
[3] setting `innodb_read_only_compressed=0`
