Nixos-shell: Difference between revisions
imported>Onny Add Flakes example |
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[https://github.com/Mic92/nixos-shell | {{DISPLAYTITLE:{{#if:{{NAMESPACE}}|{{NAMESPACE}}:|}}{{lcfirst:{{PAGENAME}}}}}} | ||
[https://github.com/Mic92/nixos-shell nixos-shell] is a small helper script for spawning lightweight NixOS virtual machines in a shell. | |||
== Installation == | == Installation == | ||
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settings.title = "My Wiki"; | settings.title = "My Wiki"; | ||
}; | }; | ||
} | } | ||
</nowiki>}} | </nowiki>}} | ||
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After the VM is successfully booted, DokuWiki will be available on http://localhost:8080 | After the VM is successfully booted, DokuWiki will be available on http://localhost:8080 | ||
=== Reference local nixpkgs folder === | |||
Using the <code>-I nixpkgs</code> parameter, you could choose to use a local ''nixpkgs'' repository, for example to test unfinished packages or modules:<syntaxhighlight lang="bash"> | |||
nixos-shell -I nixpkgs=/home/myuser/projects/nixpkgs myvm.nix | |||
</syntaxhighlight> | |||
=== Graphical session === | |||
Following snippet will spawn a QEMU session with a graphical screen running GNOME, configured to auto login the user <code>nixos</code>.{{file|myvm.nix|nix|<nowiki> | |||
{ ... }: { | |||
virtualisation.memorySize = 8096; | |||
virtualisation.cores = 8; | |||
virtualisation.graphics = true; | |||
services.displayManager.gdm.enable = true; | |||
services.desktopManager.gnome.enable = true; | |||
services.displayManager.autoLogin = { | |||
enable = true; | |||
user = "nixos"; | |||
}; | |||
users.users.nixos = { | |||
isNormalUser = true; | |||
initialPassword = "nixos"; | |||
}; | |||
}; | |||
</nowiki>|name=|lang=}} | |||
=== Mounting host directories === | === Mounting host directories === | ||
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{{file|myvm.nix|nix|<nowiki> | {{file|myvm.nix|nix|<nowiki> | ||
{ | { ... }: { | ||
nixos-shell.mounts.extraMounts = { | nixos-shell.mounts.extraMounts = { | ||
"/var/lib/nextcloud/store-apps/calendar" = { | "/var/lib/nextcloud/store-apps/calendar" = { | ||
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}; | }; | ||
}; | }; | ||
</nowiki>}} | </nowiki>|name=|lang=}} | ||
Mounting is done through the network filesystem protocol 9p. Currently [https://github.com/Mic92/nixos-shell/issues/71 it's not possible] to mount the target directory with a specific UID/GID, so you'll have to change the permissions on the host directory according to your needs. | Mounting is done through the network filesystem protocol 9p. Currently [https://github.com/Mic92/nixos-shell/issues/71 it's not possible] to mount the target directory with a specific UID/GID, so you'll have to change the permissions on the host directory according to your needs. | ||
=== | === Inside Nix Flake === | ||
Using following [[Flakes]] example, you can start a virtual machine using nixos-shell by just typing <code>nix run</code> | Using following [[Flakes]] example, you can start a virtual machine using nixos-shell by just typing <code>nix run</code> | ||
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description = "Spawns lightweight nixos vm in a shell"; | description = "Spawns lightweight nixos vm in a shell"; | ||
inputs | inputs = { | ||
nixpkgs.url = "nixpkgs/nixos-23.11"; | |||
nixos-shell.url = "github:Mic92/nixos-shell"; | |||
}; | |||
outputs = { self, nixpkgs }: let | outputs = { self, nixpkgs, nixos-shell }: let | ||
pkgs = nixpkgs.legacyPackages.x86_64-linux; | pkgs = nixpkgs.legacyPackages.x86_64-linux; | ||
start = | start = | ||
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modules = [ | modules = [ | ||
(import ./myvm.nix) | (import ./myvm.nix) | ||
nixos-shell.nixosModules.nixos-shell | |||
]; | ]; | ||
}; | }; | ||
packages = { inherit start; }; | packages = { inherit start; }; | ||
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The configuration of the virtual machine is inside the file <code>myvm.nix</code> in the same directory. The virtual machine will use the nixpkgs source defined in the flake inputs. | The configuration of the virtual machine is inside the file <code>myvm.nix</code> in the same directory. The virtual machine will use the nixpkgs source defined in the flake inputs. | ||
[[Category:Container]] | |||