Use sparse cargo registry

.github/workflows/main.yml

@@ -62,14 +62,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: Cache cargo registry and index
-      uses: actions/cache@v3
-      with:
-        path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
     - name: Cache cargo target dir
       uses: actions/cache@v3
       with:
@@ -103,6 +95,13 @@ jobs:
       if: matrix.os == 'windows-latest'
       run: git config --global core.autocrlf false
 
+    - name: Use sparse cargo registry
+      run: |
+        cat >> ~/.cargo/config.toml <<EOF
+        [unstable]
+        sparse-registry = true
+        EOF
+
     - name: Prepare dependencies
       run: ./y.rs prepare
 

.github/workflows/nightly-cranelift.yml

@@ -13,6 +13,13 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: Use sparse cargo registry
+      run: |
+        cat >> ~/.cargo/config.toml <<EOF
+        [unstable]
+        sparse-registry = true
+        EOF
+
     - name: Prepare dependencies
       run: |
         git config --global user.email "user@example.com"

.github/workflows/rustc.yml

@@ -10,20 +10,19 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: Cache cargo registry and index
-      uses: actions/cache@v3
-      with:
-        path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-        key: ${{ runner.os }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
     - name: Cache cargo target dir
       uses: actions/cache@v3
       with:
         path: build/cg_clif
         key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
 
+    - name: Use sparse cargo registry
+      run: |
+        cat >> ~/.cargo/config.toml <<EOF
+        [unstable]
+        sparse-registry = true
+        EOF
+
     - name: Prepare dependencies
       run: |
         git config --global user.email "user@example.com"
@@ -38,20 +37,19 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: Cache cargo registry and index
-      uses: actions/cache@v3
-      with:
-        path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-        key: ${{ runner.os }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
     - name: Cache cargo target dir
       uses: actions/cache@v3
       with:
         path: build/cg_clif
         key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
 
+    - name: Use sparse cargo registry
+      run: |
+        cat >> ~/.cargo/config.toml <<EOF
+        [unstable]
+        sparse-registry = true
+        EOF
+
     - name: Prepare dependencies
       run: |
         git config --global user.email "user@example.com"