Conversation
jarkko

Jarkko Sakkinen

Edited yesterday
Took a while to get there (aka not slept last night) but now I have the rudimentary infrastructure to build NixOS QCOW2 with docker-compose or podman-compose:

https://codeberg.org/jarkko/linux-tpmdd-nixos

I.e running "podman-compose up --build" results in " output/tpmdd-nixos.qcow2"

Next up how do I extract semantic version from Makefile of the kernel tree instead of presetting version to 5.10?

#linux #kernel #nixos
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jarkko

Jarkko Sakkinen

Reply to @jarkko

This is a problem for kernel development:

      src = pkgs.fetchgit {
        url = "https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git";
        sha256 = "sha256-ZoxNKErtJv0U0tGUC6o4ifXrPi6ZbIxMocMA0mgnzsg=";
      };

So I guess I need to rename configuration.nix to configuration.nix.in and replace that with:

     src = pkgs.fetchgit {
        url = "https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git";
        sha256 = "@KERNEL_SHA256@";
      };

Then using nix-prefetch-git https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git and sed I can create the actual configuration.nix.

Unfortunately it seems that lib.fakeSha256 cannot be put into skip/ignore mode :-(

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twoolie@ioc.exchange

Thomas Woolford 🚌🚲🚶

Reply to @jarkko

@jarkko But why?

https://github.com/nix-community/nixos-generators supports qcow2 output

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jarkko

Jarkko Sakkinen

Reply to @twoolie@ioc.exchange
Edited yesterday
@twoolie But why what? It already outputs qcow2.
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jarkko

Jarkko Sakkinen

Reply to @jarkko
There is somewhat reasonable way to solve this:

src = pkgs.fetchgit (builtins.fromJSON (builtins.readFile ./linux-tpmdd.json));

In the Dockerfile, nix-prefetch-git can then be used to generate that file.
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