Workarounds for install errors on Windows (#21890)

1. Forwarding sys.stdin, e.g. use input_multiprocess_fd,
gives an error on Windows. Skipping for now

3.  subprocess_context needs to serialize for Windows, like it does
for Mac.

Co-authored-by: lou.lawrence@kitware.com <lou.lawrence@kitware.com>
Co-authored-by: John Parent <john.parent@kitware.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/var/spack/repos/builtin/packages/wrf/package.py b/var/spack/repos/builtin/packages/wrf/package.py
index cd433c1ac2..7beeee61b1 100644
--- a/var/spack/repos/builtin/packages/wrf/package.py
+++ b/var/spack/repos/builtin/packages/wrf/package.py
@@ -10,12 +10,19 @@ from fcntl import F_GETFL, F_SETFL, fcntl
 from os import O_NONBLOCK
 from os.path import basename
 from subprocess import PIPE, Popen
+from sys import platform as _platform
 from sys import stdout
 
 from llnl.util import tty
 
 from spack import *
 
+if _platform != 'win32':
+    from fcntl import F_GETFL, F_SETFL, fcntl
+    from os import O_NONBLOCK, rename
+else:
+    from os import rename
+
 re_optline = re.compile(r'\s+[0-9]+\..*\((serial|smpar|dmpar|dm\+sm)\)\s+')
 re_paroptname = re.compile(r'\((serial|smpar|dmpar|dm\+sm)\)')
 re_paroptnum = re.compile(r'\s+([0-9]+)\.\s+\(')
@@ -27,9 +34,11 @@ re_nestoptname = re.compile(r'=([^,)]+)')
 def setNonBlocking(fd):
     """
     Set the given file descriptor to non-blocking
+    Non-blocking pipes are not supported on windows
     """
-    flags = fcntl(fd, F_GETFL) | O_NONBLOCK
-    fcntl(fd, F_SETFL, flags)
+    if _platform != 'win32':
+        flags = fcntl(fd, F_GETFL) | O_NONBLOCK
+        fcntl(fd, F_SETFL, flags)
 
 
 def collect_platform_options(stdoutpipe):