By default the use of alias generates warning:
$ nix build --no-link -f. nixosTests.bittorrent
evaluation warning: transmission has been renamed to transmission_3 since transmission_4 is also available. Note that upgrade caused data loss for some users so backup is recommended (see NixOS 24.11 release notes for details)
When alaises are disabled that causes the eval failure:
error: attribute 'transmission' missing
at /home/slyfox/dev/git/nixpkgs/nixos/tests/bittorrent.nix:24:36:
23| transmissionConfig = { ... }: {
24| environment.systemPackages = [ pkgs.transmission ];
| ^
25| services.transmission = {
Did you mean one of transmission_3 or transmission_4?
Eelco has made several early contributions to NixOS including writing
the samba module among other things, but is more or less inactive these
days.
By my brief inspection, he has not committed to the nixos/ tree since
releasing Nix 2.13 in early 2023 and merging a PR to networking tests
slightly before that. A lot of these tests/modules are actually
unmaintained in practice, so we should update the code to reflect the
practical reality so someone can consider picking them up.
He prefers to contribute to his own nixpkgs fork triton.
Since he is still marked as maintainer in many packages
this leaves the wrong impression he still maintains those.
This attempts to improve stability of the test by using existing
services for miniupnpd and transmission.
It also uses explicit addresses for the network interfaces so that the
external IP addresses are valid internet addresses (thus fixing
validation problems from upnpc).
Also disable eth0 from being used to transfer torrents over without that
being the intention.
You can now run a test in the nixos/tests directory directly using
nix-build, e.g.
$ nix-build '<nixos/tests/login.nix>' -A test
This gets rid of having to add the test to nixos/tests/default.nix.
(Of course, you still need to add it to nixos/release.nix if you want
Hydra to run the test.)
