Searching packages: Difference between revisions
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There are | There are numerous approaches available for searching substrings within both package names and package descriptions in <code>nixpkgs</code>. | ||
== Using <code>search.nixos.org</code> website == | == Using <code>search.nixos.org</code> website == | ||
There is a web service to search | There is a web service to search with | ||
: | : [[channel branches]] | ||
:* Nix packages at [https://search.nixos.org/packages search.nixos.org/packages] | :* Nix packages at [https://search.nixos.org/packages search.nixos.org/packages] | ||
:* NixOS options at [https://search.nixos.org/options search.nixos.org/options] | :* NixOS options at [https://search.nixos.org/options search.nixos.org/options] | ||
: | : [[flakes]] | ||
:* packages at [https://search.nixos.org/flakes?type=packages search.nixos.org/flakes?type=packages] | :* packages at [https://search.nixos.org/flakes?type=packages search.nixos.org/flakes?type=packages] | ||
:* options at [https://search.nixos.org/flakes?type=options search.nixos.org/flakes?type=options] | :* options at [https://search.nixos.org/flakes?type=options search.nixos.org/flakes?type=options] | ||
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* easy to use | * easy to use | ||
* allows filters | * allows filters | ||
* nice GUI in browser | |||
* browser extensions possible (like @nixpgs as search engine in Firefox) | |||
; cons: | ; cons: | ||
* requires Internet connection | * always requires Internet connection | ||
== Using the <code>nix search</code> command == | == Using the <code>nix search</code> command == | ||
While this command | While this command requires [[flakes]], 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 | <syntaxhighlight lang="bash">nix search nixpkgs firefox</syntaxhighlight> | ||
; pros: | |||
* fast | |||
* possible offline usage | |||
; cons: | |||
* requires disk space for caching | |||
* quite long command | |||
== Using the <code>nix-env</code> command == | == Using the <code>nix-env</code> command == | ||
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With the read–eval–print loop (REPL) of nix you can browse packages interactively. | With the read–eval–print loop (REPL) of nix you can browse packages interactively. | ||
Starting the [ | Starting the [https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-repl.html nix repl] | ||
<syntaxhighlight lang="bash">nix repl</syntaxhighlight> | <syntaxhighlight lang="bash">nix repl</syntaxhighlight> | ||
<syntaxhighlight lang="console"> | <syntaxhighlight lang="console"> | ||
Welcome to Nix 2. | Welcome to Nix 2.18.2. Type :? for help. | ||
nix-repl> | nix-repl> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
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nix-repl> | nix-repl> | ||
</syntaxhighlight> | </syntaxhighlight> | ||
<syntaxhighlight lang="bash">:load <nixpkgs | <syntaxhighlight lang="bash">nix-repl> :load <nixpkgs> | ||
Added 21181 variables. | |||
Added | </syntaxhighlight>Type the first letters of a package | ||
</syntaxhighlight> | <syntaxhighlight lang="bash">nix-repl> neo </syntaxhighlight> | ||
Type the first letters of a package | |||
<syntaxhighlight lang=" | |||
Press <tt>Tab ↹</tt> key<!-- {{[[mw:Template::Key press]]|Tab}} --> for auto completion | 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 == | ||
There is | There is third party programs [https://github.com/nix-community/nix-index nix-index], and [https://wiki.nixos.org/wiki/Flakes rippkgs] to find which package provides a given file. This is particularly useful when you are looking for a very specific file but you don't know which package installs it. | ||
[[Category:Reference]] | [[Category:Reference]] | ||
[[Category:Nixpkgs]] | [[Category:Nixpkgs]] |