tryout alt action to install lix

.github/actions/nix/action.yml

@@ -5,7 +5,7 @@ inputs:
     description: Extra nix.conf config
     default: |
       accept-flake-config = true
-      experimental-features = pipe-operator
+      experimental-features = nix-command flakes pipe-operator
       build-dir = /nix/var
       keep-derivations = true
       keep-outputs = true
@@ -27,10 +27,15 @@ runs:
         BTRFS: ${{ inputs.btrfs }}
       run: exec ${{ github.action_path }}/prepare.sh
 
-    - uses: DeterminateSystems/nix-installer-action@v15
-      with:
-        source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
-        extra-conf: ${{ inputs.nix_conf }}
+    # - uses: DeterminateSystems/nix-installer-action@v15
+    #   with:
+    #     source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
+    #     extra-conf: ${{ inputs.nix_conf }}
+
+    - uses: samueldr/lix-gha-installer-action@released
+    - name: workaround
+      shell: bash
+      run: echo "${{ inputs.nix_conf }}" >> /etc/nix/nix.conf
 
     - name: Install and login to attic cache
       shell: bash