Add an exception to the `paperless-ng-server` service's
`SystemCallFilter` as the `mbind` syscall is needed when consuming a
document while having a classification model present.
Since b9cfbcafdf, the lack of hexdump in
the closure lead to the generation of empty cookie files. This empty
cookie file is making pleroma to crash at startup now we correctly
read it.
We introduce a migration forcing these empty cookies to be
re-generated to something not empty.
We inject the release cookie path to the pleroma derivation in order
to wrap pleroma_ctl with it. Doing this allows us to remove the
systemd-injected RELEASE_COOKIE path, which was sadly
buggy (RELEASE_COOKIE should point to the *content* of the cookie, not
the file containing it).
We take advantage of this to factor out the cookie path.
When `services.resolved.enable` is set to true, the file /etc/resolv.conf becomes a symlink to /etc/static/resolv.conf, which is a symlink to /run/systemd/resolve/stub-resolv.conf. Without this commit, tor does not have access to this file thanks to systemd confinement. This results in the following warning when tor starts:
```
[warn] Unable to stat resolver configuration in '/etc/resolv.conf': No such file or directory
[warn] Could not read your DNS config from '/etc/resolv.conf' - please investigate your DNS configuration. This is possibly a problem. Meanwhile, falling back to local DNS at 127.0.0.1.
```
To fix this, simply allow read-only access to the file when resolved is in use.
According to https://github.com/NixOS/nixpkgs/pull/161818#discussion_r824820462, the symlink may also point to /run/systemd/resolve/resolv.conf, so allow that as well.
Without this fix, evaluating a NixOS configuration with Tomcat enabled and the
default settings results in the following evaluation error:
Failed assertions:
- users.users.tomcat.group is unset. This used to default to
nogroup, but this is unsafe. For example you can create a group
for this user with:
users.users.tomcat.group = "tomcat";
users.groups.tomcat = {};
We spent a whole afternoon debugging this, because upstream has very
bad software quality and the error messages were incredibly
misleading.
So let’s document it for the sanity of other people.
Btw, I think the implementation of our module is pretty brittle,
especially the part about diffing tokens to check whether they
changed. We should rather just request a new builder registration
every time, it’s not that much overhead, and always set `replace` so
it is idempotent.
