fix: config check when set from args

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+on: [push, pull_request]
+
+name: CI
+
+jobs:
+  install_and_test:
+    name: Install & Test
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        rust:
+          - stable
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: Setup Python env
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+          check-latest: true
+
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+
+      - name: Install CLI and extism lib
+        run: |
+          pip3 install cffi
+          pip3 install .
+          extism -h
+
+          extism install git
+
+      - name: Test CLI
+        run: |
+          echo "this is a test" | extism call test/code.wasm count_vowels

extism_cli/__init__.py

@@ -517,8 +517,11 @@ def main():
             extism.fetch(version="git")
 
         # Merge args.set_config and args.config
-        config = json.loads(
-            args.set_config) if args.set_config is not None else None
+        if args.set_config is not None:
+            config = json.loads(args.set_config)
+        else: 
+            config = None
+
         if len(args.config) > 0:
             if config is None:
                 config = {}