guileImportsCheckHook: init

This hook should function similar to how pythonImportsCheck functions in
buildPythonApplication or buildPythonPackage.

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>

pkgs/by-name/gu/guileImportsCheckHook/guileImportsCheckHook.sh

@@ -0,0 +1,20 @@
+# shellcheck shell=bash
+
+# Setup hook for checking whether Guile imports succeed
+echo "Sourcing guileImportsCheckHook.sh"
+
+guileImportsCheckHook () {
+  echo "Executing guileImportsCheckHook"
+
+  if [[ -n "${guileImportsCheck[*]-}" ]]; then
+    echo "Check whether the following modules can be imported: ${guileImportsCheck[*]}"
+    for i in "${guileImportsCheck[@]}"
+    do
+      # prevent guile from trying to AOT compile during import
+      # guile can't find the library to import unless we set this
+      GUILE_LOAD_PATH="$out/share/guile/site/@effectiveVersion@" GUILE_AUTO_COMPILE=0 guile -c "(use-modules (${i}))"
+    done
+  fi
+}
+
+appendToVar preDistPhases guileImportsCheckHook

pkgs/by-name/gu/guileImportsCheckHook/package.nix

@@ -0,0 +1,17 @@
+{
+  lib,
+  makeSetupHook,
+  guile,
+  effectiveVersion ? guile.effectiveVersion,
+}:
+
+makeSetupHook {
+  name = "guileImportsCheckHook";
+  substitutions = {
+    effectiveVersion = guile.effectiveVersion;
+  };
+  meta = {
+    description = "Import Guile libraries";
+    maintainers = with lib.maintainers; [ ethancedwards8 ];
+  };
+} ./guileImportsCheckHook.sh