apparently you can't force a certain runner like that. hm

.forgejo/workflows/check.yaml

@@ -3,8 +3,7 @@ on:
   pull_request_target:
 jobs:
   format:
-    runs_on: fructose
-    name: "nix fmt"
+    name: "Check formatting"
     steps:
       - name: Checkout repository
         uses: https://git.collective-conciousness.monster/Ittihadyya/checkout@v4

.forgejo/workflows/flake-update.yaml

@@ -6,7 +6,6 @@ on:
     - cron: '0 2 * * *'
 jobs:
   flake-update:
-    runs_on: fructose
     name: "Update .lock file"
     steps:
       - name: Checkout repository