%CONDA_PREFIX%\bin does not exist anymore on Windows

Only %CONDA_PREFIX%\Library\bin exists.

Author: popescu-v

khiops/core/internals/runner.py

@@ -180,20 +180,25 @@ def _check_conda_env_bin_dir(conda_env_bin_dir):
 
 def _infer_khiops_installation_method(trace=False):
     """Return the Khiops installation method"""
-    # We are in a conda environment if
-    # - if the CONDA_PREFIX environment variable exists and,
-    # - if MODL, MODL_Coclustering and mpiexec files exists in
-    # `$CONDA_PREFIX/bin`
-    #
-    # Note: The check that MODL and MODL_Coclustering are actually executable is done
+    # We are in a Conda environment if
+    # - the CONDA_PREFIX environment variable exists and,
+    # - the khiops_env script exists within:
+    #   - `%CONDA_PREFIX\Library\bin%` on Windows
+    #   - `$CONDA_PREFIX/bin` on Linux and MacOS
+    # Note: The check that the Khiops binaries are actually executable is done
     #       afterwards by the initializations method.
-    # We are in a conda env if the Khiops binaries exists within `$CONDA_PREFIX/bin`
-    if "CONDA_PREFIX" in os.environ and _khiops_env_file_exists(
-        os.path.join(os.environ["CONDA_PREFIX"], "bin")
-    ):
-        installation_method = "conda"
-    # Otherwise, we choose between conda-based and local (default choice)
-    else:
+    installation_method = "unknown"
+    if "CONDA_PREFIX" in os.environ:
+        conda_env_dir = os.environ["CONDA_PREFIX"]
+        if platform.system() == "Windows":
+            conda_binary_dir = os.path.join(conda_env_dir, "Library", "bin")
+        else:
+            conda_binary_dir = os.path.join(conda_env_dir, "bin")
+        if _khiops_env_file_exists(conda_binary_dir):
+            installation_method = "conda"
+    # Otherwise (installation_method is still "unknown"), we choose between
+    # conda-based and local (default choice)
+    if installation_method == "unknown":
         env_bin_dir = _infer_env_bin_dir_for_conda_based_installations()
         if trace:
             print(f"Environment binary dir: '{env_bin_dir}'")