diff --git a/build.zig b/build.zig
index bded306..0317b85 100644
--- a/build.zig
+++ b/build.zig
@@ -73,9 +73,34 @@ pub fn build(b: *std.Build) void {
         .use_pkg_config = .force,
     });
     exe_unit_tests.linkLibC();
-
     const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
 
+    const dsa_unit_tests = b.addTest(.{
+        .name = "dsa.zig tests",
+        .root_source_file = .{ .path = "src/dsa.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+    const run_dsa_unit_tests = b.addRunArtifact(dsa_unit_tests);
+
     const test_step = b.step("test", "Run unit tests");
     test_step.dependOn(&run_exe_unit_tests.step);
+    test_step.dependOn(&run_dsa_unit_tests.step);
+
+    const inspect = b.addExecutable(.{
+        .name = "vkinspect",
+        .root_source_file = .{ .path = "src/inspect.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+    inspect.linkSystemLibrary2("vulkan", .{
+        .needed = true,
+        .preferred_link_mode = .dynamic,
+    });
+    exe_unit_tests.linkLibC();
+    inspect.root_module.addImport("vk", vkmod);
+    inspect.linkLibC();
+    const run_inspect = b.addRunArtifact(inspect);
+    const inspect_step = b.step("vki", "Vulkan Inspect");
+    inspect_step.dependOn(&run_inspect.step);
 }
diff --git a/src/dsa.zig b/src/dsa.zig
new file mode 100644
index 0000000..83153af
--- /dev/null
+++ b/src/dsa.zig
@@ -0,0 +1,59 @@
+const std = @import("std");
+
+/// Slices must be sorted. Checks if `a` includes all elements of `b`.
+pub fn includes(comptime T: type, a: []const T, b: []const T) bool {
+    var ia: usize = 0;
+    var ib: usize = 0;
+
+    while (ib != b.len) {
+        if (ia == a.len) return false;
+        if (b[ib] < a[ia]) return false;
+        if (!(a[ia] < b[ib])) ib += 1;
+        ia += 1;
+    }
+    return true;
+}
+
+test includes {
+    try std.testing.expect(includes(
+        usize,
+        &.{},
+        &.{},
+    ));
+    try std.testing.expect(includes(
+        usize,
+        &.{ 1, 2, 3, 4, 5 },
+        &.{},
+    ));
+    try std.testing.expect(includes(
+        usize,
+        &.{ 1, 2, 3, 4, 5 },
+        &.{ 1, 2, 3, 4, 5 },
+    ));
+    try std.testing.expect(!includes(
+        usize,
+        &.{},
+        &.{ 1, 2, 3, 4, 5 },
+    ));
+
+    try std.testing.expect(includes(
+        usize,
+        &.{ 1, 2, 2, 4 },
+        &.{ 2, 2 },
+    ));
+    try std.testing.expect(includes(
+        usize,
+        &.{ 1, 2, 2, 4 },
+        &.{ 1, 2, 2, 4 },
+    ));
+    try std.testing.expect(!includes(
+        usize,
+        &.{ 1, 2, 2, 4 },
+        &.{ 2, 2, 2 },
+    ));
+    try std.testing.expect(!includes(
+        usize,
+        &.{ 1, 2, 2, 4 },
+        &.{ 2, 2, 3 },
+    ));
+}
diff --git a/src/inspect.zig b/src/inspect.zig
new file mode 100644
index 0000000..7f936d2
--- /dev/null
+++ b/src/inspect.zig
@@ -0,0 +1,63 @@
+const std = @import("std");
+const vk = @import("vk");
+
+const BaseWrapper = vk.BaseWrapper(.{
+    .getInstanceProcAddr = true,
+    .createInstance = true,
+});
+
+const InstanceWrapper = vk.InstanceWrapper(.{
+    .destroyInstance = true,
+    .enumeratePhysicalDevices = true,
+    .getPhysicalDeviceProperties = true,
+    .getPhysicalDeviceQueueFamilyProperties = true,
+});
+
+extern fn vkGetInstanceProcAddr(instance: vk.Instance, procname: [*:0]const u8) vk.PfnVoidFunction;
+extern fn vkGetDeviceProcAddr(device: vk.Device, procname: [*:0]const u8) vk.PfnVoidFunction;
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const ally = gpa.allocator();
+
+    const vkb = try BaseWrapper.load(vkGetInstanceProcAddr);
+
+    const instance = try vkb.createInstance(&.{
+        .p_application_info = &.{
+            .p_application_name = "vkinspect",
+            .application_version = 0,
+            .p_engine_name = "vkinspect",
+            .engine_version = 0,
+            .api_version = vk.API_VERSION_1_3,
+        },
+        .enabled_extension_count = 0,
+        .enabled_layer_count = 0,
+    }, null);
+    const vki = try InstanceWrapper.load(instance, vkGetInstanceProcAddr);
+    defer vki.destroyInstance(instance, null);
+
+    var pdev_count: u32 = undefined;
+    _ = try vki.enumeratePhysicalDevices(instance, &pdev_count, null);
+    const pdevs = try ally.alloc(vk.PhysicalDevice, pdev_count);
+    defer ally.free(pdevs);
+    _ = try vki.enumeratePhysicalDevices(instance, &pdev_count, pdevs.ptr);
+
+    std.debug.print("{d} physical devices:\n", .{pdev_count});
+    for (pdevs) |pdev| {
+        const props = vki.getPhysicalDeviceProperties(pdev);
+        const name = std.mem.sliceTo(&props.device_name, 0);
+        std.debug.print("- {s}\n", .{name});
+
+        var family_count: u32 = undefined;
+        vki.getPhysicalDeviceQueueFamilyProperties(pdev, &family_count, null);
+        const families = try ally.alloc(vk.QueueFamilyProperties, family_count);
+        defer ally.free(families);
+        vki.getPhysicalDeviceQueueFamilyProperties(pdev, &family_count, families.ptr);
+
+        std.debug.print("  {d} queue families:\n", .{family_count});
+        for (families) |family| {
+            std.debug.print("  - {any}\n", .{family.queue_flags});
+            std.debug.print("    (max {d})\n", .{family.queue_count});
+        }
+    }
+}