bekkalokk: source map data from the new map data impl in python

.gitea/workflows/eval.yml

@@ -8,6 +8,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - run: apt-get update && apt-get -y install sudo
-    - uses: https://github.com/cachix/install-nix-action@v31
+    - uses: https://github.com/cachix/install-nix-action@v23
     - run: echo -e "show-trace = true\nmax-jobs = auto\ntrusted-users = root\nexperimental-features = nix-command flakes\nbuild-users-group =" > /etc/nix/nix.conf
     - run: nix flake check

flake.nix

@@ -84,7 +84,7 @@
 
           pkgs = import nixpkgs {
             inherit system;
-            config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg)
+            extraArgs.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg)
               [
                 "nvidia-x11"
                 "nvidia-settings"