jalil/configuration.nix
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feat(devShell): Add QEMU_OPTS_WL env var

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This var has some nice defaults if you are running a Wayland host and
can spare 4vCPU cores and 2GiB of RAM.

Also improve README's documentation.
This commit is contained in:
Jalil David Salamé Messina 2024-03-26 20:59:36 +01:00
parent 413fa9fb39
commit f10bfb3e43
Signed by: jalil
GPG key ID: F016B9E770737A0B
2 changed files with 16 additions and 6 deletions
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21
README.md
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@ -3,10 +3,14 @@
This is only intended for my use, but you can see how I overengineer stuff by
looking at it :p (maybe you can also learn some stuff on the way).
This README only has a small amount of information, if you want to see the full
documentation then go to <https://jalil-salame.github.io/configuration.nix>. I
also overengineerd this c: (if you want to copy this for your own project, then
take a look at [the docs folder](./docs/default.nix).
> [!Note]
> This README only has a small amount of information, if you want to see the
> full documentation then go to
> <https://jalil-salame.github.io/configuration.nix>. I also overenginerd this
> c: (if you want to copy the docs for your own project, then take a look at
> [the docs folder](./docs/default.nix) and the
> [workflow](./.github/workflows/check.yml)(`build-documentation` and
> `deploy`)).
## Try out in a VM
@ -17,10 +21,15 @@ $ nix run nixpkgs#nixos-rebuild -- build-vm --flake .#vm
building the system configuration...
Done. The virtual machine can be started by running /nix/store/$hash-nixos-vm/bin/run-nixos-vm
$ /nix/store/$hash-nixos-vm/bin/run-nixos-vm -vga virtio
$ /nix/store/$hash-nixos-vm/bin/run-nixos-vm $QEMU_OPTS_WL
```
The default user is `jdoe` and the default password is `example`.
> [!Note]
> The `-vga virtio` flag is important, sway won't run if it is missing.
> `$QEMU_OPTS_WL` is a set of options that will enable Wayland passthrough (and
> GPU acceleration) and give the VM 2vCPU cores and 2GiB of RAM. This will
> significantly improve your experience when running the VM so it is
> recommended, but if Wayland is not available or you don't have enough
> memory/CPU cores, then you can use `-virtio vga` and/or reduce the allocated
> resources.

1
flake.nix
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@ -183,6 +183,7 @@
default = pkgs.mkShell {
inherit (self.checks.${system}.pre-commit-check) shellHook;
buildInputs = with pkgs; [ just self.packages.${system}.nvim ];
QEMU_OPTS_WL = "-smp 4 -device virtio-gpu-rutabaga,gfxstream-vulkan=on,cross-domain=on,hostmem=2G,wsi=headless";
};
});
};