Act on env vars issue

.github/workflows/ci.yml

@@ -13,10 +13,6 @@ name: CI
   workflow_dispatch: {}
   merge_group:
 
-# Sets the ENV `MIX_ENV` to `test` for running tests
-env:
-  MIX_ENV: test
-
 permissions:
   contents: read
 
@@ -47,7 +43,7 @@ jobs:
             elixir-version: "1.17"
 
     env:
-      polyfil: fromJSON(matrix.otp-version) < 27
+      MIX_ENV: ${{ fromJSON(matrix.otp-version) < 27 && 'polyfill' || 'test' }}
 
     steps:
       # Step: Setup Elixir + Erlang image as the base.
@@ -71,9 +67,9 @@ jobs:
         with:
           path: deps
           key: |
-            ${{runner.os}}-polyfill-${{env.polyfil}}-mix-${{env.cache-name}}-${{hashFiles('**/mix.lock')}}
+            ${{runner.os}}-end-${{env.MIX_ENV}}-mix-${{env.cache-name}}-${{hashFiles('**/mix.lock')}}
           restore-keys: |
-            ${{runner.os}}-polyfill-${{env.polyfil}}-mix-${{env.cache-name}}-
+            ${{runner.os}}-end-${{env.MIX_ENV}}-mix-${{env.cache-name}}-
 
       # Step: Define how to cache the `_build` directory. After the first run,
       # this speeds up tests runs a lot. This includes not re-compiling our
@@ -86,19 +82,12 @@ jobs:
         with:
           path: _build
           key: |
-            ${{runner.os}}-polyfill-${{env.polyfil}}-mix-${{env.cache-name}}-${{hashFiles('**/mix.lock')}}
+            ${{runner.os}}-env-${{env.MIX_ENV}}-mix-${{env.cache-name}}-${{hashFiles('**/mix.lock')}}
           restore-keys: |
-            ${{runner.os}}-polyfill-${{env.polyfil}}-mix-${{env.cache-name}}-
+            ${{runner.os}}-end-${{env.MIX_ENV}}-mix-${{env.cache-name}}-
 
       # Step: Download project dependencies. If unchanged, uses the cached version.
-      - name: Install dependencies (Polyfill)
-        if: ${{env.polyfil}}
-        run: mix deps.get
-        env:
-          MIX_ENV: polyfill
-
       - name: Install dependencies
-        if: ${{!env.polyfil}}
         run: mix deps.get
 
       # Step: Compile the project treating any warnings as errors.