use nix cache

.gitea/workflows/test.yaml

@@ -15,6 +15,9 @@ jobs:
         uses: https://github.com/cachix/install-nix-action@v23
         with:
           github_access_token: ${{ secrets.__GITHUB_TOKEN }}
+          extra_nix_config: |
+            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= s0.koi-bebop.ts.net:OjbzD86YjyJZpCp9RWaQKANaflcpKhtzBMNP8I2aPUU=
+            substituters = https://cache.nixos.org/ http://s0.koi-bebop.ts.net:5000
 
       - name: Install dependencies
         run: nix profile install nixpkgs#nodejs-18_x
@@ -29,15 +32,9 @@ jobs:
         run: |
           ls ${{ gitea.workspace }}
 
-      # - name: Print nixpkgs version
-      #   run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
-
-      # - run: nix-shell -p cowsay --run "cowsay test"
-
       - run: nix run nixpkgs#cowsay -- hello
 
-      - name: Install dependencies
-        run: nix profile install nixpkgs#cowsay
+      - run: nix profile install nixpkgs#cowsay
       - run: cowsay testing
 
       - run: nix profile install nixpkgs#curl