feat(ci): Cache CI results

.forgejo/workflows/eval.yaml

@@ -68,3 +68,21 @@ jobs:
         run: |
           # Enter the shell
           nix-shell --run 'colmena build --on rescue01'
+
+  push_to_cache:
+    runs-on: nix
+    needs:
+      - build_compute01
+      - build_storage01
+      - build_vault01
+      - build_web01
+      - build_web02
+      - build_rescue01
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Push to cache
+        run: nix-shell --run push-to-cache
+        env:
+          ATTIC_ENDPOINT: "https://cachix.dgnum.eu"
+          ATTIC_TOKEN: ${{ secrets.ATTIC_TOKEN }}

default.nix

@@ -76,6 +76,7 @@ in
           [
             npins
             nixos-generators
+            attic-client
           ]
           ++ (builtins.map (p: callPackage p { }) [
             (sources.disko + "/package.nix")

machines/storage01/atticd.nix

@@ -58,7 +58,7 @@ in
           proxyPass = "http://127.0.0.1:9090";
 
           extraConfig = ''
-            client_max_body_size 700M;
+            client_max_body_size 10G;
           '';
         };
       };

scripts/cache.sh

@@ -0,0 +1,12 @@
+ENDPOINT=${ATTIC_ENDPOINT:-https://cachix.dgnum.eu}
+
+if [ "$1" == "off" ]; then
+	echo "Please edit $XDG_CONFIG_DIRS/nix/nix.conf to remove the cache"
+elif [ "$1" == "on" ]; then
+	@attic@/bin/attic login dgnum "$ENDPOINT"
+	@attic@/bin/attic use dgnum:infra
+else
+	echo "Help:"
+	echo "  cache {on|off}"
+fi
+

scripts/default.nix

@@ -10,6 +10,7 @@ let
       git
       jq
       ;
+    attic = pkgs.attic-client;
   };
 
   mkShellScript =
@@ -32,6 +33,8 @@ let
     "check-deployment"
     "launch-vm"
     "list-nodes"
+    "push-to-cache"
+    "cache"
   ];
 in
 

scripts/push-to-cache.sh

@@ -0,0 +1,13 @@
+set -e
+set -u
+set -o pipefail
+
+ENDPOINT=${ATTIC_ENDPOINT:-https://cachix.dgnum.eu}
+
+@attic@/bin/attic login dgnum "$ENDPOINT" "$ATTIC_TOKEN"
+
+@colmena@/bin/colmena eval -E '{ nodes, lib, ... }: lib.mapAttrsToList (_: v: v.config.system.build.toplevel.drvPath) nodes' |\
+@jq@/bin/jq -r '.[]' |\
+xargs nix-store -q -R --include-outputs |\
+sed '/\.drv$/d' |\
+xargs @attic@/bin/attic push dgnum:infra