ci: unpin nix install url

I don't think we no longer need this and the install-nix-action
is not compatible with it.

diff --git a/.github/workflows/nixos.yml b/.github/workflows/nixos.yml
index a8f8b10eb0015118c6ebfc372e949c1925afd32b..aea0139f2f0731a4bfe5884755024ab0f2060855 100644 (file)
--- a/.github/workflows/nixos.yml
+++ b/.github/workflows/nixos.yml
@@ -9,8 +9,6 @@ jobs:
     - uses: actions/checkout@v2.3.4
     - uses: cachix/install-nix-action@v22
       with:
-        install_url: https://nixos-nix-install-tests.cachix.org/serve/vij683ly7sl95nnhb67bdjjfabclr85m/install
-        install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
         extra_nix_config: |
           experimental-features = nix-command flakes
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}