Fix conda runtime on Windows (operating from within conda as well)

partcad/src/partcad/runtime_python_conda.py

@@ -42,7 +42,8 @@ def run(self, cmd, stdin=""):
                 "--no-capture-output",
                 "-p",
                 self.path,
-                "python%s" % self.version,
+                "python",  # Trust conda to set the link correctly
+                # "python%s" % self.version, # This doesn't work on Windows
             ]
             + cmd,
             stdin,

partcad/src/partcad/wrappers/wrapper_common.py

@@ -10,7 +10,8 @@
 # This script contains code shared by all wrapper scripts.
 
 import base64
-import fcntl
+
+# import fcntl # TODO(clairbee): replace it with whatever works on Windows if needed
 import os
 import pickle
 import sys
@@ -27,9 +28,9 @@ def handle_input():
     # - Comand line parameters
     path = sys.argv[1]
     # - Content passed via stdin
-    #   - Make stdin blocking so that we can read until EOF
-    flag = fcntl.fcntl(sys.stdin, fcntl.F_GETFL)
-    fcntl.fcntl(sys.stdin, fcntl.F_SETFL, flag & ~os.O_NONBLOCK)
+    # #   - Make stdin blocking so that we can read until EOF
+    # flag = fcntl.fcntl(sys.stdin, fcntl.F_GETFL)
+    # fcntl.fcntl(sys.stdin, fcntl.F_SETFL, flag & ~os.O_NONBLOCK)
     #   - Read until EOF
     input_str = sys.stdin.read()
     #   - Unpack the content received via stdin