Cannot build lineageos on x86

[OsiPog]

While trying to build the example config for my phone (OnePlus 6T, fajita) I am getting the following errors:

error: Cannot build '/nix/store/g9wc5sfv8dz92dlkra800xhn83zl32vd-fakeuser.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser
       Last 25 log lines:
       > Host machine cpu family: x86_64
       > Host machine cpu: x86_64
       > Build targets in project: 1
       >
       > fakeuser undefined
       >
       >   User defined options
       >     auto_features: enabled
       >     bindir       : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/bin
       >     buildtype    : plain
       >     includedir   : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/include
       >     infodir      : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/share/info
       >     libdir       : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/lib
       >     libexecdir   : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/libexec
       >     localedir    : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/share/locale
       >     mandir       : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/share/man
       >     prefix       : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser
       >     sbindir      : /nix/store/mn3zggjh04jmif9nhmc9c2r3y9qsc5z4-fakeuser/sbin
       >     wrap_mode    : nodownload
       >
       > Found ninja-1.12.1 at /nix/store/0gk4i8rv9vppwwbig525k1fkhkph6vwx-ninja-1.12.1/bin/ninja
       > mesonConfigurePhase: enabled\ parallel\ building
       > Running phase: buildPhase
       > build flags: -j12
       > ninja: fatal: posix_spawn: No such file or directory
       For full logs, run:
         nix log /nix/store/g9wc5sfv8dz92dlkra800xhn83zl32vd-fakeuser.drv

Here is my configuration:

robotnixSystem {
    flavor = "lineageos";

    # Supported devices are listed under https://wiki.lineageos.org/devices/
    device = "fajita";

    # LineageOS branch.
    # You can check the supported branches for your device under
    # https://wiki.lineageos.org/devices/<device codename>
    # Leave out to choose the official default branch for the device.
    flavorVersion = "22.2";

    apps = {
      fdroid.enable = true;
      seedvault.enable = true;
    };
    microg.enable = true;

    # Enables ccache for the build process. Remember to add /var/cache/ccache as
    # an additional sandbox path to your Nix config.
    ccache.enable = true;
  };

You can try it yourself too:

nix build github:osipog/nix-config#robotnixConfigurations.fajita.img

Any Idea what I am doing wrong?