build: update for zig-0.12.0-dev.2208+4debd4338

I may move this commit to a separate branch, since there are a variety
of improvements that I think I want to get applied to the
0.11.x-compatible codebase still. However, I have also not been
motivated to work on those fixes, since this codebase is kind of
crusty due to being the first thing I ever wrote in zig. Doing a
bigger rewrite might supply the motivation to make those improvements.
I will have to think about it. For now, I am going to focus elsewhere.

build.zig

@@ -1,11 +1,11 @@
 const std = @import("std");
 
 pub fn build(b: *std.Build) void {
-    const target: std.zig.CrossTarget = b.standardTargetOptions(.{});
+    const target: std.Build.ResolvedTarget = b.standardTargetOptions(.{});
     const optimize: std.builtin.Mode = b.standardOptimizeOption(.{});
 
     const noclip = b.addModule("noclip", .{
-        .source_file = .{ .path = "source/noclip.zig" },
+        .root_source_file = .{ .path = "source/noclip.zig" },
     });
 
     demo(b, noclip, target, optimize);
@@ -24,7 +24,7 @@ pub fn build(b: *std.Build) void {
 fn demo(
     b: *std.Build,
     noclip: *std.Build.Module,
-    target: std.zig.CrossTarget,
+    target: std.Build.ResolvedTarget,
     optimize: std.builtin.Mode,
 ) void {
     const demo_step = b.step("demo", "Build and install CLI demo program");
@@ -35,7 +35,7 @@ fn demo(
         .target = target,
         .optimize = optimize,
     });
-    exe.addModule("noclip", noclip);
+    exe.root_module.addImport("noclip", noclip);
     const install_demo = b.addInstallArtifact(exe, .{});
 
     demo_step.dependOn(&install_demo.step);

build.zig.zon

@@ -0,0 +1,11 @@
+.{
+    .name = "NOCLIP",
+    .version = "0.1.0-pre",
+    .dependencies = .{},
+    .paths = .{
+        "source",
+        "build.zig",
+        "build.zig.zon",
+        "license",
+    },
+}

source/command.zig

@@ -372,7 +372,9 @@ pub fn CommandBuilder(comptime UserContext: type) type {
                     // global tags and env_vars would conflict, which is less common.
                     if (param.short_tag) |short|
                         tag_fields = tag_fields ++ &[_]StructField{.{
-                            .name = short,
+                            // this goofy construct coerces the comptime []const u8 to
+                            // [:0]const u8.
+                            .name = short ++ "",
                             .type = void,
                             .default_value = null,
                             .is_comptime = false,
@@ -381,7 +383,7 @@ pub fn CommandBuilder(comptime UserContext: type) type {
 
                     if (param.long_tag) |long|
                         tag_fields = tag_fields ++ &[_]StructField{.{
-                            .name = long,
+                            .name = long ++ "",
                             .type = void,
                             .default_value = null,
                             .is_comptime = false,
@@ -390,7 +392,7 @@ pub fn CommandBuilder(comptime UserContext: type) type {
 
                     if (param.env_var) |env_var|
                         env_var_fields = env_var_fields ++ &[_]StructField{.{
-                            .name = env_var,
+                            .name = env_var ++ "",
                             .type = void,
                             .default_value = null,
                             .is_comptime = false,
@@ -435,7 +437,7 @@ pub fn CommandBuilder(comptime UserContext: type) type {
                     const default = if (param.default) |def| &@as(FieldType, def) else @as(?*const anyopaque, null);
 
                     fields = fields ++ &[_]StructField{.{
-                        .name = param.name,
+                        .name = param.name ++ "",
                         .type = FieldType,
                         .default_value = @ptrCast(default),
                         .is_comptime = false,
@@ -505,7 +507,7 @@ pub fn CommandBuilder(comptime UserContext: type) type {
                         ?PType.G.IntermediateType();
 
                     fields = &(@as([fields.len]StructField, fields[0..fields.len].*) ++ [1]StructField{.{
-                        .name = param.name,
+                        .name = param.name ++ "",
                         .type = FieldType,
                         .default_value = @ptrCast(&@as(
                             FieldType,

source/meta.zig

@@ -210,7 +210,7 @@ pub fn MutatingZSplitter(comptime T: type) type {
 pub fn copyStruct(comptime T: type, source: T, field_overrides: anytype) T {
     var result: T = undefined;
 
-    comptime inline for (@typeInfo(@TypeOf(field_overrides)).Struct.fields) |field| {
+    comptime for (@typeInfo(@TypeOf(field_overrides)).Struct.fields) |field| {
         if (!@hasField(T, field.name)) @compileError("override contains bad field" ++ field);
     };
 
@@ -254,9 +254,8 @@ pub const TupleBuilder = struct {
         comptime {
             var fields: [self.types.len]StructField = undefined;
             for (self.types, 0..) |Type, idx| {
-                var num_buf: [128]u8 = undefined;
                 fields[idx] = .{
-                    .name = std.fmt.bufPrint(&num_buf, "{d}", .{idx}) catch @compileError("failed to write field"),
+                    .name = std.fmt.comptimePrint("{d}", .{idx}),
                     .type = Type,
                     .default_value = null,
                     // TODO: is this the right thing to do?

source/parser.zig

@@ -160,7 +160,7 @@ pub fn Parser(comptime command: anytype, comptime callback: anytype) type {
 
         pub fn execute(self: *@This(), context: UserContext) anyerror!void {
             const args = try std.process.argsAlloc(self.allocator);
-            var env = try std.process.getEnvMap(self.allocator);
+            const env = try std.process.getEnvMap(self.allocator);
 
             if (args.len < 1) return ParseError.EmptyArgs;