use flake.nix for CI

.github/workflows/main.yml

@@ -101,12 +101,13 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3
-
-      # Set up the flutter environment and run checks
-      - uses: subosito/flutter-action@v2
-        with:
-          flutter-version: '3.13.9'
-          channel: 'stable'
+
+      - name: Install nix 
+
+        uses: nixbuild/nix-quick-install-action@v26
+      - name: Run nix develop
+        working-directory: snippets/dart_snippets
+        run: nix develop
 
       - uses: actions/download-artifact@v3
         with:
@@ -130,11 +131,11 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3
-
-      - name: Setup dotnet
-        uses: actions/setup-dotnet@v3
-        with:
-          dotnet-version: '7.0.x'
+      - name: Install nix
+        uses: nixbuild/nix-quick-install-action@v26
+      - name: Run nix develop
+        working-directory: snippets/csharp
+        run: nix develop
 
       - name: Download archived package
         uses: actions/download-artifact@v3
@@ -167,10 +168,12 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v3
 
-      - name: Set Node.js 20.x
-        uses: actions/setup-node@v3
-        with:
-          node-version: 20.x
+      - name: Install nix 
+        uses: nixbuild/nix-quick-install-action@v26 
+
+      - name: Run nix develop
+        working-directory: snippets/react-native
+        run: nix develop
 
       - name: Download archived package
         uses: actions/download-artifact@v3
@@ -199,11 +202,12 @@ jobs:
     steps:
       - name: Checkout repo
         uses: actions/checkout@v3
-
-      - uses: actions/setup-go@v4
-        with:
-          go-version: '1.21'
-
+      - name: Install nix
+        uses: nixbuild/nix-quick-install-action@v26
+      - name: Run nix develop
+        working-directory: snippets/go
+        run: nix develop
+
       - name: Download archived package
         uses: actions/download-artifact@v3
         with:
@@ -234,19 +238,22 @@ jobs:
           go build .
 
   check-python:
-    needs:
-      - build-packages
+    needs: 
+    - build-packages
+
     name: Check Python snippets
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.8'
-
+      - name : Install nix
+        uses: nixbuild/nix-quick-install-action@v26
+
+      - name: Run nix develop
+        working-directory: snippets/go
+        run: nix develop  
+
       - name: Download archived package
         uses: actions/download-artifact@v3
         with:
@@ -292,17 +299,16 @@ jobs:
     name: Check kotlin MPP snippets
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v3
+      - name: Checkout repo  
+        uses: actions/checkout@v3 
 
-      - name: Set up Java 17
-        uses: actions/setup-java@v2
-        with:
-          distribution: "temurin"
-          java-version: 17
+      - name : Install nix
+        uses: nixbuild/nix-quick-install-action@v26
+      - working-directory: snippets/kotlin_mpp_lib
+        run: nix develop 
+
 
       - name: Compile Kotlin
-        working-directory: snippets/kotlin_mpp_lib
         run: |
           ./gradlew build
 

snippets/kotlin_mpp_lib/flake.nix

@@ -16,6 +16,7 @@
     in
     {
       devShells.default = pkgs.mkShell {
+        # TODO make gradle use java17 by default.
         buildInputs = with pkgs; [
           kotlin
           ktlint

snippets/python/flake.nix

@@ -17,7 +17,8 @@
     {
       devShells.default = pkgs.mkShell {
         buildInputs = with pkgs; [
-          python3
+          python311Full
+          python311Packages.pip
           ruff
         ];
       };