fix: make sure to cleanup files at context manager exit, but not on close

.github/workflows/tests.yml

@@ -28,7 +28,7 @@ jobs:
           channel-priority: strict
           show-channel-urls: true
           miniforge-version: latest
-          python-version: 3.11
+          python-version: 3.12
 
       - name: configure conda and install code
         shell: bash -el {0}

.github/workflows/tests_mamba.yml

@@ -28,7 +28,7 @@ jobs:
           channel-priority: strict
           show-channel-urls: true
           miniforge-version: latest
-          python-version: 3.11
+          python-version: 3.12
 
       - name: configure conda and install code
         shell: bash -el {0}

conda_forge_feedstock_check_solvable/rattler_build.py

@@ -13,9 +13,7 @@ def run_rattler_build(command):
     try:
         # Run the command and capture output
         print_debug("Running: %s", " ".join(command))
-        result = subprocess.run(
-            " ".join(command), shell=True, check=False, capture_output=True, text=True
-        )
+        result = subprocess.run(command, check=False, capture_output=True, text=True)
 
         # Get the status code
         status_code = result.returncode
@@ -35,7 +33,7 @@ def invoke_rattler_build(
     # this is OK since there is an lru cache
     virtual_package_repo_url = virtual_package_repodata()
     # create a temporary file and dump the variants as YAML
-    with tempfile.NamedTemporaryFile(mode="w", delete=False) as variants_file:
+    with tempfile.NamedTemporaryFile(mode="w", delete_on_close=False) as variants_file:
         channel_sources = variants.get("channel_sources", [])
         # Add virtual package repo URL to channel sources
         if channel_sources:

pyproject.toml

@@ -15,6 +15,7 @@ description = "A mamba-based package to check if a conda-forge feedstock is solv
 dynamic = ["version", "dependencies", "optional-dependencies"]
 license = {file = "LICENSE"}
 readme = "README.md"
+requires-python = ">=3.12"
 
 [project.urls]
 home = "https://github.com/regro/conda-forge-feedstock-check-solvable"