-fix for select.select not supported on windows

-fix for maya/katana replacing stdin with object that does not have fileno attribute

Author: ajohns

src/rez/cli/env.py

@@ -229,8 +229,11 @@ def command(opts, parser, extra_arg_groups=None):
 
     # generally shells will behave as though the '-s' flag was not present when
     # no stdin is available. So here we replicate this behaviour.
-    if opts.stdin and not select.select([sys.stdin], [], [], 0.0)[0]:
-        opts.stdin = False
+    try:
+        if opts.stdin and not select.select([sys.stdin], [], [], 0.0)[0]:
+            opts.stdin = False
+    except select.error:
+        pass  # because windows
 
     quiet = opts.quiet or bool(command)
     returncode, _, _ = context.execute_shell(

src/rez/utils/_version.py

@@ -1,7 +1,7 @@
 
 
 # Update this value to version up Rez. Do not place anything else in this file.
-_rez_version = "2.22.0"
+_rez_version = "2.22.1"
 
 try:
     from rez.vendor.version.version import Version

src/rez/utils/system.py

@@ -21,10 +21,18 @@ def popen(args, **kwargs):
 
     Avoids python bug described here: https://bugs.python.org/issue3905. This
     can arise when apps (maya) install a non-standard stdin handler.
-    """
 
-    # avoid non-standard stdin handler
-    if "stdin" not in kwargs and sys.stdin.fileno() not in (0, 1, 2):
-        kwargs["stdin"] = subprocess.PIPE
+    In newer version of maya and katana, the sys.stdin object can also become
+    replaced by an object with no 'fileno' attribute, this is also taken into
+    account.
+    """
+    if "stdin" not in kwargs:
+        try:
+            file_no = sys.stdin.fileno()
+        except AttributeError:
+            file_no = sys.__stdin__.fileno()
+
+        if file_no not in (0, 1, 2):
+            kwargs["stdin"] = subprocess.PIPE
 
     return subprocess.Popen(args, **kwargs)

src/rez/wrapper.py

@@ -173,8 +173,12 @@ def _add_argument(*nargs, **kwargs):
             # generally shells will behave as though the '-s' flag was not present
             # when no stdin is available. So here we replicate this behaviour.
             import select
-            if not select.select([sys.stdin], [], [], 0.0)[0]:
-                opts.stdin = False
+
+            try:
+                if not select.select([sys.stdin], [], [], 0.0)[0]:
+                    opts.stdin = False
+            except select.error:
+                pass  # because windows
 
         # construct command
         cmd = None