ci: fix build cache path

.gitea/workflows/gentoo-utils.yml

@@ -94,8 +94,6 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v6
 
-        # TODO: This is currently unused by other jobs. I couldn't make meson not regenerate things regardless of
-        # the build dir already existing.
       - name: Build Cache Setup
         uses: actions/cache@v5
         with:
@@ -117,13 +115,21 @@ jobs:
     env:
       CC: "clang"
       CXX: "clang++"
-    needs: [build-oci-image]
+    needs: [build-oci-image, build]
     container:
       image: ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:${{ needs.build-oci-image.outputs.image_tag }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6
 
+      - name: Restore build cache
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            subprojects
+            build
+          key: build-${{ gitea.repository }}-${{ gitea.sha }}
+
       - name: test
         run: |
           meson setup -Dfuzz=enabled -Dtests=enabled -Dbuildtype=debugoptimized -Ddocs=enabled build
@@ -136,13 +142,20 @@ jobs:
       CC: "clang"
       CXX: "clang++"
       FUZZER_TIMEOUT_S: 300
-    needs: [build-oci-image]
+    needs: [build-oci-image, build]
     container:
       image: ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:${{ needs.build-oci-image.outputs.image_tag }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6
 
+      - name: Restore Build Cache
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            subprojects
+            build
+          key: build-${{ gitea.repository }}-${{ gitea.sha }}
       # FIXME: Get rid of this step when portage has fixes merged?
       # needed because portage has fixes upstream we need that arent stable yet
       - name: Checkout tip of portage
@@ -164,13 +177,21 @@ jobs:
 
   check-format:
     runs-on: gentoo
-    needs: [build-oci-image]
+    needs: [build-oci-image, build]
     container:
       image: ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:${{ needs.build-oci-image.outputs.image_tag }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6
 
+      - name: Restore Build Cache
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            subprojects
+            build
+          key: build-${{ gitea.repository }}-${{ gitea.sha }}
+
       - name: Check Formatting
         run: |
           meson setup -Dfuzz=enabled -Dtests=enabled -Dbuildtype=debugoptimized build
@@ -179,13 +200,21 @@ jobs:
 
   docs:
     runs-on: gentoo
-    needs: [build-oci-image]
+    needs: [build-oci-image, build]
     container:
       image: ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}:${{ needs.build-oci-image.outputs.image_tag }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v6
 
+      - name: Restore Build Cache
+        uses: actions/cache/restore@v5
+        with:
+          path: |
+            subprojects
+            build
+          key: build-${{ gitea.repository }}-${{ gitea.sha }}
+
       - name: Build Documentation
         run: |
           meson setup -Ddocs=enabled docs