try more exhaustive search

setup.py

@@ -27,10 +27,37 @@
 # look for various gurobi versions, which are annoyingly
 # suffixed with the version number, and wildcards don't work
 
+
+def find_conda_gurobi() -> tuple[str, str] | tuple[None, None]:
+    conda_prefix = os.environ.get("CONDA_PREFIX")
+    if not conda_prefix:
+        raise RuntimeError(
+            "No active Conda environment found. Activate an environment before running."
+        )
+
+    # Construct the potential library paths
+    library_paths = [
+        os.path.join(conda_prefix, "Library", "bin"),  # Windows DLLs
+        os.path.join(conda_prefix, "lib"),  # macOS/Linux
+    ]
+
+    for lib_path in library_paths:
+        if os.path.exists(lib_path):
+            os.environ["PATH"] += os.pathsep + lib_path  # Dynamically add to PATH
+
+    # Search for Gurobi in the active Conda environment
+    for v, prefix in product(range(100, 150, 10), ("lib", "")):
+        gurobi_lib = f"{prefix}gurobi{v}"
+        if found := util.find_library(gurobi_lib):
+            return gurobi_lib, found
+
+    return (None, None)
+
+
 for v, prefix in product(range(100, 150, 10), ("lib", "")):
-    GUROBI_LIB = f"{prefix}gurobi{v}"
-    if (gurolib := util.find_library(GUROBI_LIB)) is not None:
-        print("FOUND GUROBI library: ", gurolib)
+    GUROBI_LIB, lib_path = find_conda_gurobi()
+    if GUROBI_LIB is not None:
+        print(f"FOUND GUROBI library {GUROBI_LIB!r}: {lib_path}")
         libraries.append(GUROBI_LIB)
         compile_args.append("/DHAVE_GUROBI" if os.name == "nt" else "-DHAVE_GUROBI")
         break