push sheeet

pkgs/development/interpreters/python/hooks/python-imports-check-hook.sh

@@ -0,0 +1,28 @@
+# shellcheck shell=bash
+
+# Setup hook for checking whether Python imports succeed
+echo "Sourcing python-imports-check-hook.sh"
+
+pythonImportsCheckPhase() {
+    echo "Executing pythonImportsCheckPhase"
+
+    if [[ -n "${pythonImportsCheck[*]-}" ]]; then
+        echo "Check whether the following modules can be imported: ${pythonImportsCheck[*]}"
+        # shellcheck disable=SC2154
+        pythonImportsCheckOutput="$out"
+        if [[ -n "${python-}" ]]; then
+            echo "Using python specific output \$python for imports check"
+            pythonImportsCheckOutput=$python
+        fi
+        export PYTHONPATH="$pythonImportsCheckOutput/@pythonSitePackages@:$PYTHONPATH"
+        # Python modules and namespaces names are Python identifiers, which must not contain spaces.
+        # See https://docs.python.org/3/reference/lexical_analysis.html
+        # shellcheck disable=SC2048,SC2086
+        (cd "$pythonImportsCheckOutput" && @pythonCheckInterpreter@ -c 'import sys; import importlib; list(map(lambda mod: importlib.import_module(mod), sys.argv[1:]))' ${pythonImportsCheck[*]})
+    fi
+}
+
+if [[ -z "${dontUsePythonImportsCheck-}" ]]; then
+    echo "Using pythonImportsCheckPhase"
+    appendToVar preDistPhases pythonImportsCheckPhase
+fi