ci: use cache-nix-action

Author: mightyiam

.github/workflows/check.yml

@@ -7,6 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - uses: nixbuild/nix-quick-install-action@master
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+      - uses: nix-community/cache-nix-action@main
+        with:
+          primary-key: a-single-key
       - run: nix flake check

.github/workflows/docs.yml

@@ -18,8 +18,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - uses: nixbuild/nix-quick-install-action@master
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+      - uses: nix-community/cache-nix-action@main
+        with:
+          primary-key: a-single-key
       - run: nix build .#manual
       - uses: actions/upload-pages-artifact@v3
         with:

.github/workflows/release.yml

@@ -13,11 +13,14 @@ jobs:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: nixbuild/nix-quick-install-action@master
         with:
-          extra-conf: |
-            experimental-features = no-url-literals pipe-operators
-      - uses: DeterminateSystems/magic-nix-cache-action@main
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+      - uses: nix-community/cache-nix-action@main
+        with:
+          primary-key: a-single-key
       - uses: navikt/github-app-token-generator@v1
         id: get-token
         with: