Cache poexam binary in CI

Author: flashcode

.github/workflows/ci.yml

@@ -12,6 +12,9 @@ jobs:
 
   checks:
 
+    env:
+      POEXAM_VERSION: "0.0.12"
+
     strategy:
       matrix:
         os:
@@ -23,10 +26,19 @@ jobs:
 
     - uses: actions/checkout@v7
 
-    - name: Install dependencies
-      run: |
-        sudo apt-get install gettext
-        cargo install --version 0.0.12 poexam
+    - name: Install gettext
+      run: sudo apt-get install gettext
+
+    - name: Cache poexam
+      id: cache-poexam
+      uses: actions/cache@v4
+      with:
+        path: ~/.cargo/bin/poexam
+        key: poexam-${{ env.POEXAM_VERSION }}-${{ runner.os }}
+
+    - name: Install poexam
+      if: steps.cache-poexam.outputs.cache-hit != 'true'
+      run: cargo install --version "$POEXAM_VERSION" poexam
 
     - name: Check gettext files
       run: make gettext