improve build.zig; run nu tests

.gitignore

@@ -45,5 +45,7 @@ build-*/
 docgen_tmp/
 
 .idea/
+.direnv/
+.envrc
 
 imgui.ini

build.zig

@@ -14,12 +14,28 @@ pub fn build(b: *std.Build) void {
 
     const cimgui = b.dependency("cimgui", .{});
 
+    const nu = b.addModule("nu", .{
+        .root_source_file = b.path("src/nu.zig"),
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+    nu.addImport("cimgui", cimgui.module("cimgui"));
+    nu.addImport("vk", vkmod);
+    nu.linkSystemLibrary("glfw3", .{
+        .needed = true,
+        .preferred_link_mode = .static,
+        .use_pkg_config = .force,
+    });
+
     const exe = b.addExecutable(.{
         .name = "scratchzig",
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
     });
+    exe.root_module.addImport("nu", nu);
+    exe.root_module.addImport("vk", vkmod);
     exe.root_module.addImport("cimgui", cimgui.module("cimgui"));
 
     const shaders = vkgen.ShaderCompileStep.create(
@@ -31,14 +47,6 @@ pub fn build(b: *std.Build) void {
     shaders.add("triangle_frag", "src/shaders/triangle.frag", .{});
     exe.root_module.addImport("shaders", shaders.getModule());
 
-    exe.linkSystemLibrary2("glfw3", .{
-        .needed = true,
-        .preferred_link_mode = .static,
-        .use_pkg_config = .force,
-    });
-    exe.linkLibC();
-    exe.root_module.addImport("vk", vkmod);
-
     b.installArtifact(exe);
 
     const run_cmd = b.addRunArtifact(exe);
@@ -51,19 +59,36 @@ pub fn build(b: *std.Build) void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
-    const exe_unit_tests = b.addTest(.{
+    const nu_unit_tests = b.addTest(.{
-        .root_source_file = b.path("src/main.zig"),
+        .root_source_file = b.path("src/nu.zig"),
         .target = target,
         .optimize = optimize,
     });
-    exe_unit_tests.linkSystemLibrary2("glfw3", .{
+    nu_unit_tests.root_module.addImport("cimgui", cimgui.module("cimgui"));
+    nu_unit_tests.root_module.addImport("vk", vkmod);
+    nu_unit_tests.root_module.linkSystemLibrary("glfw3", .{
         .needed = true,
         .preferred_link_mode = .static,
         .use_pkg_config = .force,
     });
-    exe_unit_tests.linkLibC();
+    nu_unit_tests.linkLibC();
-    const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
+
+    const run_nu_unit_tests = b.addRunArtifact(nu_unit_tests);
+
+    // const exe_unit_tests = b.addTest(.{
+    //     .root_source_file = b.path("src/main.zig"),
+    //     .target = target,
+    //     .optimize = optimize,
+    // });
+    // exe_unit_tests.linkSystemLibrary2("glfw3", .{
+    //     .needed = true,
+    //     .preferred_link_mode = .static,
+    //     .use_pkg_config = .force,
+    // });
+    // exe_unit_tests.linkLibC();
+    // const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
 
     const test_step = b.step("test", "Run unit tests");
-    test_step.dependOn(&run_exe_unit_tests.step);
+    // test_step.dependOn(&run_exe_unit_tests.step);
+    test_step.dependOn(&run_nu_unit_tests.step);
 }

src/main.zig

@@ -3,7 +3,7 @@ const nu = @import("nu.zig");
 
 pub const nu_modules = .{
     App,
-    // UI,
+    UI,
 };
 pub const main = nu.main;
 

src/nu.zig

@@ -1,12 +1,13 @@
 const std = @import("std");
 const root = @import("root");
+const hooks = @import("nu/hooks.zig");
 
 pub const Window = @import("nu/Window.zig");
 pub const Render = @import("nu/Render.zig");
 pub const ImGui = @import("nu/ImGui.zig");
 
 pub const Bus = @import("nu/Bus.zig");
-pub const Hook = @import("nu/hooks.zig").Hook;
+pub const Hook = hooks.Hook;
 
 const Config = struct {
     window: Window.Config = .{},
@@ -109,3 +110,7 @@ const Graph = struct {
         return result;
     }
 };
+
+test {
+    std.testing.refAllDecls(hooks);
+}