How to gather the full config of a NixOS system? Hello highlight.js! Note that at the moment one can only use passphrases (keylocation=prompt) for pools that are mounted as the root fs. Your /etc/nixos/configuration.nix would look like: Your /etc/nixos/packages.nix would look like: How does that work? It only takes a minute to sign up. # Generate the NixOS configuration, as per the NixOS manual. Share Copy … The installation CD also comes with zfs. Another way is just to make a function that returns a set with some attribute, and the value of that attribute you would put inside environment.systemPackages. with pkgs; [ emacs gitFull ] is a with-expression, it brings the scope of the expression before semicolon to the expression after semicolon.

Here is an example of using it to install the htop package from nixos-unstable: Thanks for contributing an answer to Stack Overflow! You can't set its actual size (ZFS does that adaptively according to its workload), nor can you set its exact maximum size. Its 12 core Xeon is really no slouch (scoring about 5 minutes in my "compile … Last active Aug 7, 2020. How do I make a self-signed certificate persist in nixos? : mount the filesystem manually and regenerate your list of filesystems, as such: This will regenerate your /etc/nixos/hardware-configuration.nix file: NixOS will now make sure that your filesystem is always mounted during boot. We needed a way to pass pkgs to callPackage somehow. To manually start trimming of a zpool run: zpool trim tank. What is the logic of the colour-mixing puzzle in The Whispered World? Following example of ./hardware-configuration.nix, the simple way to extract the list of packages into a separate module packages.nix is just to rip the environment.systemPackages option out and put ./packages.nix into imports option. Why isn't there pkgs in configuration.nix?

How does Nix manage SystemD modules on a non-NixOS? It also, # makes a "nixos" filesystem underneath the root, to support installing multiple OSes if. This makes sure that systemd will mount the filesystem for /path/to/key first before importing the zfs pool. GitHub Gist: instantly share code, notes, and snippets. If you're interested in setting up RAID, see below. Luckily it is possible to reserve disk space for datasets to prevent this. where does haskell packages in nixpkgs go?

# and save them to /mnt/nixos/hardware-configuration.nix during the install process. When you run nixos-rebuild switch, the process that evaluates Nix expressions and decides to install packages and so on calls configuration.nix with a set of attributes, some of which are config and pkgs. This is your configuration.nix: import ./packages.nix pkgs means: load and return the Nix expression in ./packages.nix and as it is a function, call it with an argument pkgs. Can I carry large sum of cash (>10k EUR) in my hand luggage? Why don't Presidential debates disable the candidates' microphones while it's not their turn to speak? # that's something you choose to do in future. You can have it, but if you don't refer to it anywhere in the file, you can safely omit it, as the ellipsis would include them anyway. (Nor is it possible in other versions of ZFS on Linux yet, according to Stack Exchange.). To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

To activate the configuration and load the ZFS kernel module, run: All ZFS functionality should now be available. Unfortunately having an unlock key file stored in an encrypted zfs dataset cannot be used directly, so the pool must use keyformat=passphrase and keylocation=prompt.

Here are the relevant parts of my /etc/nixos/configuration.nix: This adds an unstable derivative that can be used in environment.systemPackages.

Use master if you are on unstable.

All ZFS pools available to the system will be forcibly imported during boot, regardless if you had imported them before or not. Do bubbles get created when you move something in water? Following example of ./hardware-configuration.nix, the simple way to extract the list of packages into a separate module packages.nix is just to rip the environment.systemPackages option out and put ./packages.nix into imports option. # Partition 2 will be the boot partition, needed for legacy (BIOS) boot.

How do you rebuild nixos packages using cloned nixpkgs? For further information read the PR description. The dataset itself should not be used. by using fetchFromGithub with the "rev" parameter, @DavidCosta if you posted an answer to this question showing how to do that, I would vote it up. imports. Here's an example of how to create a ZFS root pool using 4 disks in RAID-10 mode (striping+mirroring), create a ZFS root+home filesystems and install NixOS on them:

The foreign policy of the Richard Nixon administration was the foreign policy of the United States from January 20, 1969 to August 9, 1974, when Richard Nixon served as President. …

Since zfs is a copy-on-write filesystem even for deleting files disk space is needed. Encrypted datasets can be added on top as follow: Instead of encrypting just a dataset (and all its child datasets) you can also directly encrypt the whole pool upon creation: All child datasets will inherit the encryption. His policy sought on détente with both nations, which were hostile to the U.S. and to each other. # Create the pool. Since Nix is good at being Nix, most users will want their server's data backed up, and don't Wiring a reliable temperature switched outlet.

There are two modes of it. Why is Lufthansa cancelling flights to India? - NixOS/nixos-hardware . A Nix expression is like any programming language expression: anything that evaluates to a value or a function. Unix & Linux Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us.

However the main difference is, that auto-trim will skip ranges that it considers too small while manually issued trim will trim all ranges. Why don't Presidential debates disable the candidates' microphones while it's not their turn to speak? Did the Danish Justice Ministry survey veterinarians about bestiality? Loading dependencies from nixpkgs-unstable with nix-shell. You can also see it's a function that accepts a set and returns a set. Embed. To learn more, see our tips on writing great answers. dataset's hierarchy. The following is a list of recommended dataset properties which have no drawbacks under regular uses: The following is a list of dataset properties which are often useful, but do have drawbacks: Journald requires some properties for journalctl to work for non-root users. Why is "help you save money" wrong if the subject was plural?

# '-R /mnt' is not a persistent property of the FS, it'll just be used while we're installing. ZFS trimming works on one or more zpools and will trim each ssd inside it. Skip to content. It finds attribute imports inside the returned set, so it evaluates every Nix expression in the modules that imports contains with the same arguments (config, pkgs, etc). When if ever was the C language 'int' size altered from the host machine word (register) size into a literal 32 bit size? How do I split the NixOS configuration file into separate modules? # normal fstab-based mounting machinery in Linux.