View source for FAQ/Cannot Find Package

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== I cannot find $package when running <code>nix-env -qaP</code> even with channels configured ==

Not all packages are listed. Packages may not be listed because:
* the package is unfree, like e.g. ''unrar'' and ''teamspeak_client''; see [[FAQ#How_can_I_install_a_proprietary_or_unfree_package.3F|The appropriate FAQ entry for installing unfree packages]]
* the package is part of an attribute set and <code>nix-env</code> doesn't recurse into this set (see ''pkgs.recurseIntoAttrs''), use <code>nix-env -qaP -A haskellPackages</code> for listing these entries
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