diff --git a/.github/workflows/build-then-cache.yaml b/.github/workflows/build-then-cache.yaml
index e504e29..2c19999 100644
--- a/.github/workflows/build-then-cache.yaml
+++ b/.github/workflows/build-then-cache.yaml
@@ -10,6 +10,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
+        with:
+          extra-conf: |
+            keep-going = true
+            fallback = true
       - uses: DeterminateSystems/flake-checker-action@v9
       - uses: ryanccn/attic-action@v0
         with:
@@ -19,26 +23,34 @@ jobs:
       # free useless disk space
       - run: 'bash ci/util_free_space_extreme.sh'
       # TODO: figure out how to use flake checks and use those to build it
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.rpi4.config.system.build.toplevel'
+      - run: 'nix develop .#ci --command bash ci/run_builds.sh'
 
   build_x86-64_packages:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
+        with:
+          extra-conf: |
+            keep-going = true
+            fallback = true
       - uses: DeterminateSystems/flake-checker-action@v9
       - uses: ryanccn/attic-action@v0
         with:
           endpoint: ${{ secrets.ATTIC_ENDPOINT }}
           cache: ${{ secrets.ATTIC_CACHE }}
           token: ${{ secrets.ATTIC_TOKEN }}
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#packages.x86_64-linux.redlib'
+      - run: 'nix develop .#ci --command bash ci/run_builds.sh packages'
 
   build_x86-64:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
+        with:
+          extra-conf: |
+            keep-going = true
+            fallback = true
       - uses: DeterminateSystems/flake-checker-action@v9
       - uses: ryanccn/attic-action@v0
         with:
@@ -48,6 +60,4 @@ jobs:
       # free useless disk space
       - run: 'bash ci/util_free_space_extreme.sh'
       # TODO: figure out how to use flake checks and use those to build it
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.slab.config.system.build.toplevel'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nullbox.config.system.build.toplevel'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nixos-wsl.config.system.build.toplevel'
+      - run: 'nix develop .#ci --command bash ci/run_builds.sh config'
diff --git a/.github/workflows/proactive-update.yaml b/.github/workflows/proactive-update.yaml
index 9fe68d4..99065a0 100644
--- a/.github/workflows/proactive-update.yaml
+++ b/.github/workflows/proactive-update.yaml
@@ -13,6 +13,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
+        with:
+          extra-conf: |
+            keep-going = true
+            fallback = true
       - uses: DeterminateSystems/flake-checker-action@v9
       - uses: ryanccn/attic-action@v0
         with:
@@ -22,13 +26,17 @@ jobs:
       # free useless disk space
       - run: 'bash ci/util_free_space_extreme.sh'
       - run: 'nix flake update'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.rpi4.config.system.build.toplevel'
+      - run: 'nix develop .#ci --command bash ci/run_builds.sh'
 
   build_x86:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
+        with:
+          extra-conf: |
+            keep-going = true
+            fallback = true
       - uses: DeterminateSystems/flake-checker-action@v9
       - uses: ryanccn/attic-action@v0
         with:
@@ -38,6 +46,4 @@ jobs:
       # free useless disk space
       - run: 'bash ci/util_free_space_extreme.sh'
       - run: 'nix flake update'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nullbox.config.system.build.toplevel'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.slab.config.system.build.toplevel'
-      - run: 'nix develop .#ci --command nix-fast-build --eval-workers 1 --no-nom --skip-cache -f .#nixosConfigurations.nixos-wsl.config.system.build.toplevel'
+      - run: 'nix develop .#ci --command bash ci/run_builds.sh'
diff --git a/ci/run_builds.sh b/ci/run_builds.sh
new file mode 100755
index 0000000..691c5c9
--- /dev/null
+++ b/ci/run_builds.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -Exo pipefail
+
+err=0
+
+set_error () {
+	err=1
+}
+
+trap set_error ERR
+
+system="$(nix eval --impure --raw --expr 'builtins.currentSystem')"
+
+
+run_builds () {
+	for i in "$@" ; do
+		nix-fast-build --eval-workers 1 --no-nom --skip-cache --attic-cache main -f "$i"
+	done
+}
+
+build_systems () {
+	case "$system" in
+		x86_64-linux) run_builds \
+			.\#nixosConfigurations.nullbox.config.system.build.toplevel \
+			.\#nixosConfigurations.slab.config.system.build.toplevel \
+			.\#nixosConfigurations.nixos-wsl.config.system.build.toplevel \
+			;;
+
+		aarch64-linux) run_builds \
+			.\#nixosConfigurations.rpi4.config.system.build.toplevel \
+			;;
+	esac
+}
+
+build_packages () {
+	run_builds .\#packages."${system}".redlib
+}
+
+
+if [[ "$#" -ne 0 ]] ; then
+	until [[ "$#" -le 0 ]]; do
+		case "$1" in
+			pkgs|packages) DO_PACKAGES=1;;
+			config) DO_CONFIG=1;;
+		esac
+		shift
+	done
+else
+	DO_PACKAGES=1
+	DO_CONFIG=1
+fi
+
+if [[ -n "${DO_CONFIG:+x}" ]] ; then build_systems; fi
+if [[ -n "${DO_PACKAGES:+x}" ]] ; then build_packages; fi
+
+exit $err