fix: fix checks missing venv

Signed-off-by: grapebaba <[email protected]>

.github/workflows/build.yml

@@ -19,9 +19,7 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
+      - name: Install dependencies and run checks
         run: |
           source scripts/install.sh
-      - name: Check with ruff
-        run: |
           make check

libroll.py

@@ -31,9 +31,9 @@ def run(descr: str, command: str | list[str], **kwargs) -> str:
         }
         # Seems to return str but I'm getting warnings about it being typed as bytes.
         output: str|bytes = subprocess.run(command, **keywords).stdout
-        if type(output) is str:
+        if isinstance(output, str):
             return output
-        elif type(output) is bytes:
+        elif isinstance(output, bytes):
             return output.decode("utf-8")
     except subprocess.CalledProcessError as err:
         raise Exception(f"Failed to {descr}: {err}") from err