Searching packages: Difference between revisions
imported>Vater there is also a search for everybody's (experimental) darling flakes nowadays |
imported>Vater form & foo |
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There are multiple ways to search for a package name in <code>nixpkgs</code>. | There are multiple ways to search for a package name in <code>nixpkgs</code>. | ||
== Using <code>search.nixos.org</code> == | == Using <code>search.nixos.org</code> website == | ||
There is a web service to search for | There is a web service to search for | ||
* Nix packages at [https://search.nixos.org/packages search.nixos.org/packages] | * with [[channels]] | ||
* NixOS options at [https://search.nixos.org/options search.nixos.org/options] | ** Nix packages at [https://search.nixos.org/packages search.nixos.org/packages] | ||
* | ** NixOS options at [https://search.nixos.org/options search.nixos.org/options] | ||
* options | * with [[flakes]] | ||
** packages at [https://search.nixos.org/flakes?type=options search.nixos.org/flakes?type=options] | |||
** options at [https://search.nixos.org/flakes?type=packages search.nixos.org/flakes?type=packages] | |||
; pros: | |||
* easy to use | |||
* allows filters | |||
; cons: | |||
* requires Internet connection | |||
== Using <code>nix search</code> command == | == Using the <code>nix search</code> command == | ||
While this command is still experimental, you can use it to search for a package. It may be slow the first time, but further runs will use cached results. | While this command is still experimental, you can use it to search for a package. It may be slow the first time, but further runs will use cached results. | ||
< | <syntaxhighlight lang="bash">nix --extra-experimental-features "nix-command flakes" search nixpkgs firefox</syntaxhighlight> | ||
</ | |||
== Using the <code>nix-env</code> command == | == Using the <code>nix-env</code> command == | ||
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It's possible to search for a package using <code>nix-env -qaP</code> | It's possible to search for a package using <code>nix-env -qaP</code> | ||
; pros: | |||
* works offline | |||
; cons: | |||
* it's very slow and requires a lot of memory | |||
== | == Using the <code>nix repl</code> environment == | ||
With the read–eval–print loop (REPL) of nix you can browse packages interactively. | |||
< | Starting the [[nix command/repl|nix repl]] | ||
<syntaxhighlight lang="bash">nix repl</syntaxhighlight> | |||
<syntaxhighlight lang="console"> | |||
Welcome to Nix 2.8.1. Type :? for help. | Welcome to Nix 2.8.1. Type :? for help. | ||
nix-repl> :load <nixpkgs> | nix-repl> | ||
</syntaxhighlight> | |||
Loading the repository for nixpkgs | |||
<syntaxhighlight lang="console"> | |||
nix-repl> | |||
</syntaxhighlight> | |||
<syntaxhighlight lang="bash">:load <nixpkgs></syntaxhighlight> | |||
<syntaxhighlight lang="console"> | |||
Added 16519 variables. | Added 16519 variables. | ||
</syntaxhighlight> | |||
nix-repl> firef | Type the first letters of a package | ||
</ | <syntaxhighlight lang="console">nix-repl></syntaxhighlight> | ||
<syntaxhighlight lang="bash">firef</syntaxhighlight> | |||
Press <tt>Tab ↹</tt> key<!-- {{[[mw:Template::Key press]]|Tab}} --> for auto completion | |||
== Reverse search: searching which package provides a file == | == Reverse search: searching which package provides a file == | ||