feat: enable x86_64-linux builds in CI

Author: jfroche

.github/workflows/nix-build.yml

@@ -55,26 +55,25 @@ jobs:
         with:
           attr: ${{ matrix.attr }}
 
-  # TODO
-  # nix-build-x86_64-linux:
-  #   name: ${{matrix.postgresql_version}}.${{ matrix.name }} (x86_64-linux)
-  #   needs: nix-eval
-  #   runs-on: ${{ matrix.runs_on.group && matrix.runs_on || matrix.runs_on.labels }}
-  #   if: ${{ fromJSON(needs.nix-eval.outputs.matrix).x86_64_linux != null }}
-  #   strategy:
-  #     fail-fast: false
-  #     max-parallel: 3
-  #     matrix: ${{ fromJSON(needs.nix-eval.outputs.matrix).x86_64_linux }}
-  #   steps:
-  #     - name: Checkout Repo
-  #       uses: actions/checkout@v4
-  #     - name: Build Nix Package
-  #       uses: ./.github/actions/nix-build-self-hosted
-  #       with:
-  #         attr: ${{ matrix.attr }}
+  nix-build-x86_64-linux:
+    name: ${{ matrix.name }} (x86_64-linux)
+    needs: nix-eval
+    runs-on: ${{ matrix.runs_on.group && matrix.runs_on || matrix.runs_on.labels }}
+    if: ${{ fromJSON(needs.nix-eval.outputs.matrix).x86_64_linux != null }}
+    strategy:
+      fail-fast: false
+      max-parallel: 5
+      matrix: ${{ fromJSON(needs.nix-eval.outputs.matrix).x86_64_linux }}
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+      - name: Build Nix Package
+        uses: ./.github/actions/nix-build-self-hosted
+        with:
+          attr: ${{ matrix.attr }}
 
   run-testinfra:
-    needs: [nix-build-aarch64-linux, nix-build-aarch64-darwin] #, nix-build-x86_64-linux]
+    needs: [nix-build-aarch64-linux, nix-build-aarch64-darwin, nix-build-x86_64-linux]
     if: |
       !cancelled() &&
       (needs.nix-build-aarch64-linux.result == 'skipped' || needs.nix-build-aarch64-linux.result == 'success') &&
@@ -84,7 +83,7 @@ jobs:
       DEV_AWS_ROLE: ${{ secrets.DEV_AWS_ROLE }}
 
   run-tests:
-    needs: [nix-build-aarch64-linux, nix-build-aarch64-darwin] #, nix-build-x86_64-linux]
+    needs: [nix-build-aarch64-linux, nix-build-aarch64-darwin, nix-build-x86_64-linux]
     if: |
       !cancelled() && 
       (needs.nix-build-aarch64-linux.result == 'skipped' || needs.nix-build-aarch64-linux.result == 'success') &&