nix-index VS nixos-search

nix-index can be used to provide this functionality, and to automate this process you can use nix-index-database (setup instructions are in the README).

Are you using flakes? AFAIK `command-not-found` does not work with them. See https://github.com/NixOS/nixpkgs/issues/171054 and https://discourse.nixos.org/t/why-isnt-there-an-official-bui...

I think `nix-index` works as a replacement: https://github.com/bennofs/nix-index

If you are on another distro or mac os there is also nix-index

nix-index is another option for searching for pkgs. You can search by name, or by specific files within a pkg.

You can use nix-locate from https://github.com/bennofs/nix-index to find files on NixOS:

nix-index makes it trivial to find which package contains a given file.

There are two ways I know of: - If you use old-school channels, there's an index in the channel. In particular, the command-not-found hook is able to use that. In this particular case, you would have to guess that git will look for the git-clang-tools, and command-not-found that. This looks like it only works for programs, not arbitrary files. - In any case, you can use the more general nix-index. That's what I did because I use flakes.

I use nix-index a lot to find which derivation a file belongs to, but building the index takes a while and so I end up not updating it very frequently.

Look at the library missing say X Use nix-locate to find the derivation that includes libX.dylib file (if it can’t find the macOS dylib version of the file try using the same name for linux by changing dylib for so) Add the derivation to you environmental and try again It will find the next missing library on the next compile.

For me, https://search.nixos.org/ is a better aid than the wiki. Often the right keyword in the NixOS packages or modules search will lead me right to the obvious and simple answer that I couldn't find elsewhere.

Does https://search.nixos.org/ pull from nixpkgs, the Nix User Repository, or both?

Just go to search.nixos.org, open the option you would like to see more of, and click on the link behind "Declared in".

I've done a nix-env query, and checked in https://search.nixos.org but can't seem to find any SAR package, nor any google search that gave any hints to see if it might be part of another system utility package...

If you want to install a package, search for it at https://search.nixos.org

The gnome system monitor is gnome.gnome-system-monitor for example https://search.nixos.org/packages?channel=23.05&show=gnome.g...

search.nixos.org also includes flakes that people PR into the index via GitHub at https://github.com/NixOS/nixos-search/issues

ps: $ nix search exists via experimental flags https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3...

Idk about ec_sys, I couldn't find it on search.nixos.org, but since it's a kernel module it might just come with the kernel idk.

I rarely think to look at flakes by their source, actually. I have a Nixpkgs clone that I jump into for anything super ad-hoc but most of the time I'm just doing REPL, :lf ./. and mashing tab-completion. That's usually to make sure the thing I'm after exists in one of the large package sets like node, vimPlugins, or similar, and that I got the name right - which could probably be answered just as easily with https://search.nixos.org/ .

search.nixos.org