- Modified the GitHub Actions workflow to limit the build matrix to only x86_64-linux, commenting out aarch64-linux due to slower cross-compilation requirements.

- Updated the `sha256` hash for the Python package fetching in `packages.nix` to a specific value for consistency.

Author: agessaman

.github/workflows/nix-test.yml

@@ -47,7 +47,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        system: [x86_64-linux, aarch64-linux]
+        system: [x86_64-linux]
+        # Note: aarch64-linux builds require cross-compilation or QEMU emulation
+        # which is slower. Uncomment if you want to test ARM builds:
+        # system: [x86_64-linux, aarch64-linux]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

nix/packages.nix

@@ -10,8 +10,7 @@
 
         src = pkgs.python3Packages.fetchPypi {
           inherit pname version;
-          # Hash will be computed automatically on first build
-          sha256 = pkgs.lib.fakeSha256;
+          sha256 = "sha256-mnr5WqH/uKzONI8lcm1GQCSlnhx6WQyqsAr12gsMKEI=";
         };
 
         propagatedBuildInputs = with pkgs.python3Packages; [