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The use of Nix 2.0 significantly simplifies the installer, since we can just pass a different store URI (--store /mnt) - it's no longer needed to set up a chroot environment for the build, and to bootstrap Nix into the chroot. Also, commands that need to run in the installation (namely boot loader installation and setting a root password) are now executed using nixos-enter. This also removes the need for nixos-prepare-root since any required initialisation is done by Nix or by the activation script.
30 lines
793 B
XML
30 lines
793 B
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="ch-testing-installer">
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<title>Testing the Installer</title>
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<para>Building, burning, and booting from an installation CD is rather
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tedious, so here is a quick way to see if the installer works
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properly:
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<screen>
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# mount -t tmpfs none /mnt
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# nixos-generate-config --root /mnt
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$ nix-build '<nixpkgs/nixos>' -A config.system.build.nixos-install
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# ./result/bin/nixos-install</screen>
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To start a login shell in the new NixOS installation in
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<filename>/mnt</filename>:
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<screen>
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$ nix-build '<nixpkgs/nixos>' -A config.system.build.nixos-enter
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# ./result/bin/nixos-enter
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</screen>
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</para>
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</chapter>
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