diff --git a/lib/tests/modules.sh b/lib/tests/modules.sh
index a60228198fd7..c81febb4156f 100755
--- a/lib/tests/modules.sh
+++ b/lib/tests/modules.sh
@@ -63,6 +63,16 @@ checkConfigOutput '^"one two"$' config.result ./shorthand-meta.nix
 
 checkConfigOutput '^true$' config.result ./test-mergeAttrDefinitionsWithPrio.nix
 
+# types.pathInStore
+checkConfigOutput '".*/store/5lz9p8xhf89kb1c1kk6jxrzskaiygnlh-bash-5.2-p15.drv"' config.pathInStore.ok1 ./types.nix
+checkConfigOutput '".*/store/xfb3ykw9r5hpayd05sr0cizwadzq1d8q-bash-5.2-p15"' config.pathInStore.ok2 ./types.nix
+checkConfigOutput '".*/store/xfb3ykw9r5hpayd05sr0cizwadzq1d8q-bash-5.2-p15/bin/bash"' config.pathInStore.ok3 ./types.nix
+checkConfigError 'A definition for option .* is not of type .path in the Nix store.. Definition values:\n\s*- In .*: ""' config.pathInStore.bad1 ./types.nix
+checkConfigError 'A definition for option .* is not of type .path in the Nix store.. Definition values:\n\s*- In .*: ".*/store"' config.pathInStore.bad2 ./types.nix
+checkConfigError 'A definition for option .* is not of type .path in the Nix store.. Definition values:\n\s*- In .*: ".*/store/"' config.pathInStore.bad3 ./types.nix
+checkConfigError 'A definition for option .* is not of type .path in the Nix store.. Definition values:\n\s*- In .*: ".*/store/.links"' config.pathInStore.bad4 ./types.nix
+checkConfigError 'A definition for option .* is not of type .path in the Nix store.. Definition values:\n\s*- In .*: "/foo/bar"' config.pathInStore.bad5 ./types.nix
+
 # Check boolean option.
 checkConfigOutput '^false$' config.enable ./declare-enable.nix
 checkConfigError 'The option .* does not exist. Definition values:\n\s*- In .*: true' config.enable ./define-enable.nix
diff --git a/lib/tests/modules/types.nix b/lib/tests/modules/types.nix
new file mode 100644
index 000000000000..576db6b5b9ef
--- /dev/null
+++ b/lib/tests/modules/types.nix
@@ -0,0 +1,24 @@
+{ lib, ... }:
+let
+  inherit (builtins)
+    storeDir;
+  inherit (lib)
+    types
+    mkOption
+    ;
+in
+{
+  options = {
+    pathInStore = mkOption { type = types.lazyAttrsOf types.pathInStore; };
+  };
+  config = {
+    pathInStore.ok1 = "${storeDir}/5lz9p8xhf89kb1c1kk6jxrzskaiygnlh-bash-5.2-p15.drv";
+    pathInStore.ok2 = "${storeDir}/xfb3ykw9r5hpayd05sr0cizwadzq1d8q-bash-5.2-p15";
+    pathInStore.ok3 = "${storeDir}/xfb3ykw9r5hpayd05sr0cizwadzq1d8q-bash-5.2-p15/bin/bash";
+    pathInStore.bad1 = "";
+    pathInStore.bad2 = "${storeDir}";
+    pathInStore.bad3 = "${storeDir}/";
+    pathInStore.bad4 = "${storeDir}/.links"; # technically true, but not reasonable
+    pathInStore.bad5 = "/foo/bar";
+  };
+}