try self-hosted everywhere

.github/workflows/ci-nix.yaml

@@ -18,7 +18,7 @@ on:
 jobs:
   build-test:
     name: "Build & test"
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     strategy:
       matrix:
         include:
@@ -84,7 +84,7 @@ jobs:
   publish-test-results:
     name: Publish test results
     needs: [build-test]
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Download test results
       uses: actions/download-artifact@v4
@@ -99,7 +99,7 @@ jobs:
 
   haddock:
     name: "Build haddock using nix"
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Checkout repository
       uses: actions/checkout@v4
@@ -131,7 +131,7 @@ jobs:
 
   benchmarks:
     name: "Benchmarks"
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     strategy:
       matrix:
         include:
@@ -190,7 +190,7 @@ jobs:
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     # TODO: this is actually only requires the tx-cost benchmark results
     needs: [benchmarks]
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Download generated documentation
       uses: actions/download-artifact@v4
@@ -224,7 +224,7 @@ jobs:
 
   build-specification:
     name: "Build specification using nix"
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Checkout repository
       uses: actions/checkout@v4
@@ -256,7 +256,7 @@ jobs:
   documentation:
     name: Documentation
     needs: [haddock,benchmarks,build-test,build-specification]
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Checkout repository
       uses: actions/checkout@v4

.github/workflows/formatting.yaml

@@ -6,7 +6,7 @@ on:
 jobs:
   formatting:
     name: Check code formatting
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
     - name: 📥 Checkout repository
       uses: actions/checkout@v4