Make nix.conf writable

.github/workflows/test.yaml

@@ -19,12 +19,17 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+
       - name: Setup
         id: setup
         run: |
           TMP=$(mktemp -d)
           NETRC="${TMP}/netrc"
 
+          sudo chmod a+rw "${{ env.NIX_CONF }}"
+
           REQUEST_TOKEN="${ACTIONS_ID_TOKEN_REQUEST_TOKEN}"
           ROOT_URL="${ACTIONS_ID_TOKEN_REQUEST_URL}"
           JWT_ID_TOKEN=$(curl \
@@ -37,9 +42,6 @@ jobs:
           echo "::set-output name=token::${JWT_ID_TOKEN}"
           echo "::set-output name=netrc::${NETRC}"
 
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
-
       - name: Set up netrc file
         env:
           NETRC: ${{ steps.setup.outputs.netrc }}