Remove src/root and lib using root file

build.zig

@@ -15,30 +15,11 @@ pub fn build(b: *std.Build) void {
     // set a preferred release mode, allowing the user to decide how to optimize.
     const optimize = b.standardOptimizeOption(.{});
 
-    const lib = b.addStaticLibrary(.{
-        .name = "waybar-wise-fx-rate",
-        // In this case the main source file is merely a path, however, in more
-        // complicated build scripts, this could be a generated file.
-        .root_source_file = b.path("src/root.zig"),
-        .target = target,
-        .optimize = optimize,
-    });
-
-    // This declares intent for the library to be installed into the standard
-    // location when the user invokes the "install" step (the default step when
-    // running `zig build`).
-    b.installArtifact(lib);
-
     const exe = b.addExecutable(.{
         .name = "waybar-wise-fx-rate",
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
-        .version = .{
-            .major = 0,
-            .minor = 1,
-            .patch = 0,
-        },
     });
 
     const clap = b.dependency("clap", .{});
@@ -72,16 +53,6 @@ pub fn build(b: *std.Build) void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
-    // Creates a step for unit testing. This only builds the test executable
-    // but does not run it.
-    const lib_unit_tests = b.addTest(.{
-        .root_source_file = b.path("src/root.zig"),
-        .target = target,
-        .optimize = optimize,
-    });
-
-    const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
-
     const exe_unit_tests = b.addTest(.{
         .root_source_file = b.path("src/main.zig"),
         .target = target,
@@ -94,6 +65,5 @@ pub fn build(b: *std.Build) void {
     // the `zig build --help` menu, providing a way for the user to request
     // running the unit tests.
     const test_step = b.step("test", "Run unit tests");
-    test_step.dependOn(&run_lib_unit_tests.step);
     test_step.dependOn(&run_exe_unit_tests.step);
 }