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| This section described common methods for installing Nix on Non-NixOS distributions. For alternative installation methods - including how to install Nix with a non-root account - see [[Nix Cookbook#Alternative Install Methods|the Nix Cookbook]]. | | This section described common methods for installing Nix on Non-NixOS distributions. For alternative installation methods - including how to install Nix with a non-root account - see [[Nix Cookbook#Alternative Install Methods|the Nix Cookbook]]. |
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| ==== Single user install ====
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| To install Nix from any Linux distribution, use the following two commands (assumes you have the permission to use sudo and you are logged in as the user you want to install Nix for).
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| <syntaxHighlight lang="console">
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| $ sudo install -d -m755 -o $USER -g $USER /nix
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| $ curl https://nixos.org/nix/install | sh
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| </syntaxHighlight>
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| After that being done, you can use all Nix commands as a normal user without any special permissions (for example by using <code>sudo</code>)
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| ==== Installing without root permissions ====
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| By using [https://github.com/lethalman/nix-user-chroot nix-user-chroot] or [https://github.com/proot-me/PRoot PRoot]
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| you can use Nix on systems, where you have no permission to create `/nix`.
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| <code>nix-user-chroot</code> is the preferred and faster option. However it might not run on older linux kernels
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| or kernels without user namespace support. With the following command you can test
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| whether your system support user namespaces:
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| <syntaxHighlight lang="console">
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| $ unshare --user --pid echo YES
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| </syntaxHighlight>
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| The output should be <code>YES</code>.
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| If the command is absent an alternative is to check the kernel compile options.
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| <syntaxHighlight lang="console">
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| $ zgrep CONFIG_USER_NS /proc/config.gz
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| # On some systems like Debian or Ubuntu the kernel configuration is in a different place
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| $ grep CONFIG_USER_NS /boot/config-$(uname -r)
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| </syntaxHighlight>
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| If the output of this command is <code>CONFIG_USER_NS=y</code> your system supports user namespaces.
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| ===== nix-user-chroot =====
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| <code>nix-user-chroot</code> will create an environment, in which you can bind mount an directory to <code>/nix</code>.
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| The mountpoint will be only visible within this environment.
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| <code>nix-user-chroot</code> can be build the following way. This assumes a c compiler and make is installed.
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| <syntaxHighlight lang="console">
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| $ git clone https://github.com/lethalman/nix-user-chroot.git
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| $ cd nix-user-chroot
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| $ make
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| </syntaxHighlight>
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| The last step created an executable called <code>nix-user-chroot</code>.
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| <code>nix-user-chroot</code> can be used to install nix.
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| In this example the nix store will be installed to <code>~/.nix</code>:
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| <syntaxHighlight lang="console">
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| $ mkdir -m 0755 ~/.nix
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| $ ./nix-user-chroot/nix-user-chroot ~/.nix bash
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| </syntaxHighlight>
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| This will start a new shell in which you can run the install script of nix:
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| <syntaxHighlight lang="console">
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| $ curl https://nixos.org/nix/install | sh
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| </syntaxHighlight>
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| Note that you can only use nix and the installed programs within the shell started by <code>nix-user-chroot</code>.
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| ===== PRoot =====
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| Precompiled PRoot binaries can be downloaded from [https://github.com/proot-me/proot-static-build/releases here]
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| The following commands will install nix the nix store to <code>~/.nix</code>
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| <syntaxHighlight lang="console">
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| $ chmod +x proot_5.1.1_x86_64_rc2--no-seccomp # first make sure the executable bit is set on the binary
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| $ mkdir ~/.nix
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| $ ./proot_5.1.1_x86_64_rc2--no-seccomp ~/.nix
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| </syntaxHighlight>
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| This will start a new shell, where nix can be installed:
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| <syntaxHighlight lang="console">
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| $ curl https://nixos.org/nix/install | sh
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| </syntaxHighlight>
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| Note that you can only use nix and the installed programs within the shell started by PRoot.
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