Run a NixOS closure as a microVM with desktop integration
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Jörg Thalheim 2d721419e6 readme: move example to flake template
Replace inline flake.nix example with a proper flake template that users
can instantiate with `nix flake init`. This makes it easier to get
started and we can easier test the example.
2025-12-15 16:12:56 +01:00
devShells Add sidebus integration 2025-11-14 06:20:44 -03:00
nixosModules Add dconf to testvm 2025-12-09 06:41:09 -03:00
packages switch from git submodules to flake inputs 2025-12-04 23:59:33 -03:00
templates/musictest readme: move example to flake template 2025-12-15 16:12:56 +01:00
.envrc Initial commit 2025-09-25 22:29:24 -03:00
.gitignore Introduce micro-activate (RIIR activate script + tiny bit of tmpfiles) 2025-12-04 07:17:31 -03:00
flake.lock Update sidebus (now reverse-client to a session bus in the guest) 2025-12-09 06:41:01 -03:00
flake.nix readme: move example to flake template 2025-12-15 16:12:56 +01:00
LICENSE.md Initial commit 2025-09-25 22:29:24 -03:00
micro-activate.rs micro-activate: x86_64 type fix 2025-12-04 07:24:41 -03:00
munix munix: make the default command overridable via env 2025-12-05 04:06:05 -03:00
README.md readme: move example to flake template 2025-12-15 16:12:56 +01:00

munix

WIP: A microVM runner for NixOS systems with desktop integration, powered by muvm/libkrun.

Quick Start

1. Build a test VM:

nix build '.#nixosConfigurations.testvm-x86_64.config.system.build.toplevel' -o testvm

2. Run the VM:

nix run '.#munix' -- testvm

This will start an interactive bash session inside the microVM.

Run a specific command:

nix run '.#munix' -- testvm fastfetch

Create a custom VM:

Use the template to bootstrap a new munix project:

mkdir my-vm && cd my-vm
nix flake init -t 'git+https://git.clan.lol/clan/munix#musictest'
git init && git add flake.nix
nix run

This creates a flake.nix with a music player demo (MPD + Euphonica). Edit the module to customize your VM.

munix Options

  • --uid UID, -u UID - Set microVM UID (default: 1337)
  • --gid GID, -g GID - Set microVM GID (default: 1337)
  • --no-gpu - Disable GPU acceleration
  • --no-wayland - Disable Wayland support
  • --no-pipewire - Disable PipeWire audio
  • --x11 - Enable X11 support
  • --bind SRC DST - Bind mount SRC to DST in the VM
  • --ro-bind SRC DST - Read-only bind mount
  • --expose PATH - Expose PATH in the VM at the same location
  • --ro-expose PATH - Expose PATH read-only

Example with options:

nix run '.#munix' -- --no-gpu --ro-expose /home/user/data testvm htop

Development

Working on muvm & munix locally (not built into the nix store):

cd muvm && cargo build --locked --release
PATH=$PWD/muvm/target/release:$PATH ./munix testvm

Requirements

  • Linux system with KVM support (/dev/kvm)
  • For GPU acceleration: Kernel 6.13+ with compatible drivers (amdgpu, msm)
  • For Wayland: XDG_RUNTIME_DIR and WAYLAND_DISPLAY set

Known Issues