Update to ruby/mspec@5e36c68

Author: eregon

spec/mspec/lib/mspec/guards/platform.rb

@@ -41,6 +41,10 @@ def self.windows?
     os?(:windows)
   end
 
+  def self.wasi?
+    os?(:wasi)
+  end
+
   def self.wsl?
     if defined?(@wsl_p)
       @wsl_p

spec/mspec/lib/mspec/helpers/datetime.rb

@@ -25,6 +25,7 @@ def new_datetime(opts = {})
 end
 
 def with_timezone(name, offset = nil, daylight_saving_zone = "")
+  skip "WASI doesn't have TZ concept" if PlatformGuard.wasi?
   zone = name.dup
 
   if offset

spec/mspec/lib/mspec/helpers/ruby_exe.rb

@@ -112,6 +112,8 @@ def resolve_ruby_exe
 end
 
 def ruby_exe(code = :not_given, opts = {})
+  skip "WASI doesn't provide subprocess" if PlatformGuard.wasi?
+
   if opts[:dir]
     raise "ruby_exe(..., dir: dir) is no longer supported, use Dir.chdir"
   end