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| {{FAQ/breadcrumb}}{{#tweekihide:firstHeading}}<onlyinclude>
| | Unfree software refers to software that has restrictive licensing on modification and/or redistribution. This type of software cannot be freely provided or distributed in an official capacity, which means that unfree software is neither built by [[Hydra]], nor cached on the official [[Binary Cache|binary cache]]. Despite this, Nixpkgs offers a very large collection of unfree software as derivations, however they cannot be used by default without configuring Nixpkgs and opting in to unfree software usage. |
| == How can I install a proprietary or unfree package? ==
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| === Configuration for a user ===
| | [https://nixos.org/manual/nixpkgs/stable/#sec-allow-unfree Nixpkgs manual on allowing unfree packages] |
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| You won't be able to install or search for an unfree package as a user, unless you explicitly enable it in ''~/.config/nixpkgs/config.nix'' (the file and folder may need to be created):
| | [[Category:Software]] |
| | | [[Category:Nixpkgs]] |
| <syntaxhighlight lang="nix">
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| {
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| # [...]
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| allowUnfree = true;
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| }
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| </syntaxhighlight>
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| === System-level configuration (NixOS) ===
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| When using NixOS, it is possible to enable unfree for eg. <code>environment.systemPackages</code> with the following setting in your <code>/etc/nixos/configuration.nix</code>:
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| <syntaxhighlight lang="nix">
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| {
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| # [...]
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| nixpkgs.config.allowUnfree = true;
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| }
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| </syntaxhighlight>
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| '''Note that this alone will not allow you to search for or install packages with nix-env without the user configured.''' See the previous section. No reboot is required for unfree to take effect, however you need to run <code>nixos-rebuild switch</code> just like for all other changes to your systems <code>configuration.nix</code>
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| === Temporary allowing ===
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| For temporary allowing unfree packages you can set the environment variable ''NIXPKGS_ALLOW_UNFREE'', e.g.
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| <syntaxhighlight lang="bash">NIXPKGS_ALLOW_UNFREE=1 nix-env</syntaxhighlight>
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| === More precision ===
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| For whitelisting '''only specific''' unfree packages or unfree licenses
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| see the [https://nixos.org/nixpkgs/manual/#sec-allow-unfree "Installing unfree packages" section]
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| of the Nixpkgs manual.
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| Note that we are not able to test or build unfree software on Hydra
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| due to policy. Most unfree licenses prohibit us from either executing or
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| distributing the software.
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| </onlyinclude>
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Unfree software refers to software that has restrictive licensing on modification and/or redistribution. This type of software cannot be freely provided or distributed in an official capacity, which means that unfree software is neither built by Hydra, nor cached on the official binary cache. Despite this, Nixpkgs offers a very large collection of unfree software as derivations, however they cannot be used by default without configuring Nixpkgs and opting in to unfree software usage.
Nixpkgs manual on allowing unfree packages
