forked from mirrors/nixpkgs
eddd3a7e11
system configuration. svn path=/nixos/trunk/; revision=7748 |
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boot | ||
configuration | ||
helpers | ||
installer | ||
system | ||
upstart-jobs | ||
checkout-nixos.sh | ||
README | ||
STABLE | ||
test.sh | ||
upgrade.sh | ||
VERSION |
*** Building the installation CD *** (Or just grab an ISO from http://nix.cs.uu.nl/dist/nix/.) - Make sure that you have a very recent Nix. - Pull from the Nixpkgs channel to speed up building. - Check out https://svn.cs.uu.nl:12443/repos/trace/nixos/trunk/. - Make a symbolic link called "pkgs" to the location of Nixpkgs. - Build the ISO image: $ nix-build configuration/rescue-cd.nix -A rescueCD This gives you an image in result/iso/nixos.iso. - Burn the ISO image or attach it to a CD-ROM drive in VMware. *** Installation *** - Boot from the CD. - The CD contains a pretty complete NixOS installation. When it's finished booting, it should have detected most of your hardware and brought up networking (check ifconfig). Networking is necessary for the installer. It's best if you have a DHCP server on your network. Otherwise configure manually. - Login as "root", empty password. - The NixOS installer doesn't do any partitioning or formatting yet, so you need to that yourself. Use "fdisk", "mkfs.ext2" and "tune2fs". - Mount the target root device, e.g., under /mnt. - Unpack the NixOS and Nixpkgs sources: $ tar xf /nixos.tar.bz2 $ tar xf /nixpkgs.tar.bz2 $ ln -s nixpkgs-*/pkgs . (TODO: do this automatically.) - The installation is declarative; you need to make a description of the configuration that is to be built and activated. The configuration is specified in a Nix expression. See configuration/examples for example machine configurations. You can copy and edit one of those (e.g., configuration/examples/basic.nix to my-config.nix). See system/options.nix for available configuration settings. The text editor "nano" is available. In particular you need to specify boot.rootDevice and boot.grubDevice for the devices where the OS and Grub are to be installed, respectively. - Do the installation: $ nixos-installer.sh ROOTDIR . my-config.nix where ROOTDIR is the mount point of the target root device (i.e., boot.rootDevice in your configuration). - If everything went well: $ reboot You should now be able to boot into the installed NixOS. *** Updating NixOS *** - In NixOS, login as root, then do $ checkout-nixos.sh # !!! should be added to the installation This gives you a working copy of NixOS and NixPkgs in nixos/ and nixpkgs/, respectively. You only need to do this once; you can use "svn up" afterwards. - The system configuration is in /etc/nixos/configuration.nix. - To upgrade to a new configuration: $ cd nixos $ ./upgrade.sh The new configuration is activated immediately (e.g., services may be restarted if necessary), but some changes may require a reboot. - You can also test a new configuration: $ cd nixos $ ./test.sh This is like ./upgrade.sh, only the new configuration won't be installed in the system profile so the system will continue to boot from the previous configuration. *** Troubleshooting *** To get a Stage 1 shell: - Add "debug1" to the kernel command line. To switch to maintenance mode: $ shutdown now To get out of maintenance mode: $ initctl emit startup *** Development *** - Building specific parts of NixOS: $ nix-build system/system.nix \ --arg configuration "import /etc/nixos/configuration.nix" \ -A ATTR where ATTR is an attribute in system/system.nix (e.g., bootStage1).