With CUPS v2.3b5, the configuration directive `SetEnv`
moved from `cupsd.conf` to `cups-files.conf`.  See also
apple/cups@d47f6ae .

We have to follow up as `SetEnv` is now ignored in `cupsd.conf`.
Without this, executables called by cups
can't find other executables they depend on,
like `gs` or `perl`.

Adds closure size for seemingly no reason

… false'

they can be used by remote desktop software, without X11 running locally

`alembic`[1] is a database migration tool which is invoked from the CLI
when installing the telegram bridge, but never needed during the
runtime.

The reason why `alembic` is required here is to ensure that it
exists in the Python environment when deploying the bridge. However
`alembic` requires `mautrix-telegram` in its environment to create a
database schema from the Python models.

Such a dependency relation may be possible with tools like virtualenv,
however it'll result in an infinite recursion at evaluation time in Nix.

With this patch, `mautrix-telegram` doesn't depend on `alembic` anymore
and provides a patched alembic (`pkgs.mautrix-telegram.alembic`) which
has `mautrix-telegram` in its path.

[1] https://alembic.sqlalchemy.org/en/latest/

It's the same package twice but cpp-gsl is older.

Because nesting.clone calls 'eval-config.nix' manually,
without the 'extraArgs' argument that provides the 'nodes'
argument to nixos modules in nixos tests, evaluating
of 'nesting.clone' definitions would fail with the following error

while evaluating the module argument `nodes' in "<redacted>"
while evaluating the attribute '_module.args.nodes' at undefined position:
attribute 'nodes' missing, at <redacted./nixpkgs/lib/modules.nix:163:28

by not using 'extraArgs' but a nixos module instead, the nodes parameter
gets propagated to the 'eval-config.nix' call that  'nesting.clone'
makes too -  getting rid of the error.

See  https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/system/activation/top-level.nix#L13-L23
See  https://github.com/NixOS/nixpkgs/blob/master/nixos/lib/build-vms.nix#L27
See  NixOS#20886 (comment)

This is actually very useful. Allows you to test switch-to-configuration

nesting.children is still currently still broken as it will throw
away 'too much' of the config, including the modules that make
nixos tests work in the first place. But that's something for
another time.

Fails to build with llvm7

https://github.com/rfjakob/earlyoom/blob/v1.3/README.md#changelog

Without the applied patch libcanberra assumes the display is an X11
display and subsequently crashes on wayland.

pythonPackages.accupy: init at 0.1.4

pythonPackages.salmon-mail: 3.1.0 -> 3.1.1

pythonPackages.pysptk: init at 0.1.16

This reverts commit c4bc3e1, because it
is working well on my macOS 10.13 system.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

Pollutes git status

skaffold: 0.29.0 -> 0.30.0

Fixes NixOS#62210

yubikey-manager-gui: revert part of 2e359d9

halide: fix to llvm6

openimageio2: init at 2.0.8

…ilover

postgresqlPackages.pg_auto_failover: init at 1.0.2

https://github.com/jedisct1/libsodium/releases/tag/1.0.18-RELEASE