config: enable passwd isn't compiled for wasm

example/app.ts

@@ -26,6 +26,10 @@ fetch(url.href).then(response =>
   const {
     malloc,
     free,
+    config_new,
+    config_free,
+    config_load_string,
+    config_finalize,
     face_new,
     face_free,
     face_render_glyph,
@@ -68,6 +72,12 @@ fetch(url.href).then(response =>
     return { ptr: ptr, len: utf8.byteLength };
   };
 
+  // Create our config
+  const config = config_new();
+  const config_str = makeStr("font-family = monospace");
+  config_load_string(config, config_str.ptr, config_str.len);
+  config_finalize(config);
+
   // Create our atlas
   // const atlas = atlas_new(512, 0 /* greyscale */);
 

src/config.zig

@@ -314,8 +314,10 @@ pub const Config = struct {
         };
 
         // If we are missing either a command or home directory, we need
-        // to look up defaults which is kind of expensive.
+        // to look up defaults which is kind of expensive. We only do this
+        // on desktop.
         const wd_home = std.mem.eql(u8, "home", wd);
+        if (comptime !builtin.target.isWasm()) {
             if (self.command == null or wd_home) command: {
                 const alloc = self._arena.?.allocator();
 
@@ -344,6 +346,7 @@ pub const Config = struct {
                     }
                 }
             }
+        }
 
         // If we have the special value "inherit" then set it to null which
         // does the same. In the future we should change to a tagged union.
@@ -528,7 +531,7 @@ pub const Keybinds = struct {
 };
 
 // Wasm API.
-pub const Wasm = struct {
+pub const Wasm = if (!builtin.target.isWasm()) struct {} else struct {
     const wasm = @import("os/wasm.zig");
     const alloc = wasm.alloc;
     const cli_args = @import("cli_args.zig");

src/passwd.zig

@@ -5,6 +5,13 @@ const ArenaAllocator = std.heap.ArenaAllocator;
 
 const log = std.log.scoped(.passwd);
 
+// We want to be extra sure since this will force bad symbols into our import table
+comptime {
+    if (builtin.target.isWasm()) {
+        @compileError("passwd is not available for wasm");
+    }
+}
+
 /// Used to determine the default shell and directory on Unixes.
 const c = @cImport({
     @cInclude("sys/types.h");