The web and board builds compile again: a shell's lookup and a dump's read are the host's

The Tty shell check sized a buffer with std.fs.max_path_bytes and the
Restore check read the dump through the host filesystem, both in the core,
which the wasm32-freestanding build cannot compile (no PATH_MAX, no libc).
Both now run only where there is a host, as the rest of that code does.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 9 insertions, 7 deletions

diff --git a/src/builtins.zig b/src/builtins.zig
index 557145cb..76d7dfb0 100644
--- a/src/builtins.zig
+++ b/src/builtins.zig
@@ -508,7 +508,8 @@ pub const Restore = struct {
         // A dump that cannot be read is said now, and fails a ctl write: the
         // host reads it only after this step, where nobody hears. First,
         // so a Restore that could never happen spends no warning.
-        const bytes = @import("fs.zig").readRestore(c.p.gpa, path, c.p.settings.dump_dir.get()) catch |err| {
+        if (comptime pardes.hosted) {
+            const bytes = @import("fs.zig").readRestore(c.p.gpa, path, c.p.settings.dump_dir.get()) catch |err| {
             var buf: [limits.host_path_cap + 64]u8 = undefined;
             const why = switch (err) {
                 error.FileNotFound => "no such file",
@@ -517,8 +518,9 @@ pub const Restore = struct {
                 else => @errorName(err),
             };
             return c.p.reportFailure(c.id, std.fmt.bufPrint(&buf, "Restore: {s}: {s}", .{ path, why }) catch "Restore: cannot read the dump");
-        };
-        c.p.gpa.free(bytes);
+            };
+            c.p.gpa.free(bytes);
+        }
         // acme's Load adds a dump's windows to the ones there; a Restore
         // replaces them all, so it asks what Exit asks first.
         if (warnModified(c, .Restore)) return;
@@ -881,13 +883,13 @@ pub const Tty = struct {
         const arg = std.mem.trim(u8, c.arg orelse "", " \t");
         // A shell that is not there is said, where the host would quietly
         // start its fallback in its place.
-        if (arg.len > 0) {
+        if (comptime pardes.hosted) if (arg.len > 0) {
             var buf: [std.fs.max_path_bytes]u8 = undefined;
-            if (comptime pardes.hosted) if (@import("host_io.zig").Shell.find(arg, &buf) == null) {
+            if (@import("host_io.zig").Shell.find(arg, &buf) == null) {
                 var said: [320]u8 = undefined;
                 return c.p.reportFailure(c.id, std.fmt.bufPrint(&said, "Tty: no shell \"{s}\" (a name on the usual paths, or a path to one)", .{arg[0..@min(arg.len, 200)]}) catch "Tty: no such shell");
-            };
-        }
+            }
+        };
         const pane = exec.spawnTty(c.p, c.id) orelse return;
         if (arg.len > 0) pane.shell = c.p.gpa.dupe(u8, arg) catch null;
     }