refactor: replace with a simpler composite action

.github/workflows/test.yml

@@ -13,8 +13,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:
@@ -24,16 +22,13 @@ jobs:
     # cachix should be available and be able to configure a cache
     - run: cachix use cachix
     - run: nix-build test.nix
-
   custom-nix-path:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:
@@ -48,8 +43,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:
@@ -66,8 +59,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:
@@ -84,8 +75,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:
@@ -101,8 +90,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - run: yarn install --frozen-lockfile
-    - run: yarn build
     - name: Install Nix
       uses: ./
       with:

action.yml

@@ -14,5 +14,12 @@ branding:
   color: 'blue'
   icon: 'sun'
 runs:
-  using: 'node12'
-  main: 'lib/main.js'
+  using: 'composite'
+  steps:
+    - run : ${{ github.action_path }}/install-nix.sh
+      shell: bash
+      env:
+        INPUT_INSTALL_URL: ${{ inputs.install_url }}
+        INPUT_INSTALL_OPTIONS: ${{ inputs.install_options }}
+        INPUT_NIX_PATH: ${{ inputs.nix_path }}
+        INPUT_EXTRA_NIX_CONFIG: ${{ inputs.extra_nix_config }}