Test a binary cache on github

.github/build.yml

@@ -0,0 +1,27 @@
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "master" ]
+  workflow_dispatch:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install dependencies
+        run: sudo apt-get install -y qemu binfmt-support qemu-user-static
+
+      - name: Enable multiarch in Docker
+        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v18
+      - uses: cachix/cachix-action@v12
+        with:
+          name: networkinventory
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      - name: Build
+        run: |
+          ./scripts/build-servers.sh

scripts/build-servers.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+hosts=($(echo `nix eval .#nixosConfigurations --apply 'pkgs: builtins.concatStringsSep " " (builtins.attrNames pkgs)'` | xargs ))
+skip=(
+    "desktop-vm"
+    "gwyn"
+    "staubfinger"
+)
+
+for host in "${hosts[@]}"
+do
+    # Check if the host is in the skip list
+    if [[ " ${skip[*]} " =~ " ${host} " ]];then
+        continue
+    fi
+    nix build .#nixosConfigurations.${host}.config.system.build.toplevel
+done