Remote binary caches support `write-nar-listing` options where they create a `HASH.ls` file for quick indexing without having to download the nar.
This commit makes experimental `nix store ls` attempt to read these files instead of downloading the full nar.
The difference is very obvious with large packages like stellarium:
nix store ls --store "https://cache.nixos.org" /nix/store/ijpvwgs9zamqaax5dy2cd0kxgz7lr7an-stellarium-25.1 -R
Change-Id: I6a37e0788b3a91c319331a8de69c51daf3efa955
I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests
- Concepts is harder to understand, the documentation makes a good
unit vs functional vs integration distinction, but when the
integration tests are just two subdirs within `tests/` this is not
clear.
- Source filtering in the `flake.nix` is more complex. We need to
filter out some of the dirs from `tests/`, rather than simply pick
the dirs we want and take all of them. This is a good sign the
structure of what we are trying to do is not matching the structure
of the files.
With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests
functional/
installer/
nixos/
```
(cherry picked from commit 68c81c737571794f7246db53fb4774e94fcf4b7e)
Victor Fuentes