diff --git a/Applications/Python/ogs/_internal/__init__.py b/Applications/Python/ogs/_internal/__init__.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..ba497f9ed6810773225511a25225fab2bb6bef6b 100644
--- a/Applications/Python/ogs/_internal/__init__.py
+++ b/Applications/Python/ogs/_internal/__init__.py
@@ -0,0 +1,3 @@
+import os
+
+OGS_USE_PATH = os.getenv("OGS_USE_PATH", "False").lower() in ("true", "1", "t")
diff --git a/Applications/Python/ogs/_internal/provide_ogs_cli_tools_via_wheel.py b/Applications/Python/ogs/_internal/provide_ogs_cli_tools_via_wheel.py
index da8df9ccc0b5422d1c355f23b0bf2db117f8bdc2..185846f944241f13469b024157f5ea536ebd3f87 100644
--- a/Applications/Python/ogs/_internal/provide_ogs_cli_tools_via_wheel.py
+++ b/Applications/Python/ogs/_internal/provide_ogs_cli_tools_via_wheel.py
@@ -4,6 +4,8 @@ import subprocess
 import sys
 from pathlib import Path
 
+from . import OGS_USE_PATH
+
 # Here, we assume that this script is installed, e.g., in a virtual environment
 # alongside a "bin" directory.
 OGS_BIN_DIR = Path(__file__).parent.parent.parent / "bin"
@@ -82,6 +84,7 @@ def pyproject_get_binaries():
     }
 
 
+# Not used when OGS_USE_PATH is true!
 def ogs():
     raise SystemExit(ogs_with_args(sys.argv))
 
@@ -114,12 +117,13 @@ if "PEP517_BUILD_BACKEND" not in os.environ:
 
     def _program(name, args):
         exe = OGS_BIN_DIR / name
-        if "OGS_USE_PATH" in os.environ:
+        if OGS_USE_PATH:
             exe = name
         return subprocess.run([exe] + args).returncode  # noqa: PLW1510
 
     FUNC_TEMPLATE = """def {0}(): raise SystemExit(_program("{0}", sys.argv[1:]))"""
     for f in binaries_list:
-        if f == "ogs" and "OGS_USE_PATH" not in os.environ:
+        if f == "ogs" and not OGS_USE_PATH:
             continue  # provided by separate function
+        # When OGS_USE_PATH is true then ogs()-function above is not used!
         exec(FUNC_TEMPLATE.format(f))
diff --git a/Applications/Python/ogs/_internal/wrap_cli_tools.py b/Applications/Python/ogs/_internal/wrap_cli_tools.py
index 85927cd196dbd81f8b9b197104b496d92f46e037..78ea940473a2049eead92a64d471a76cb508ac43 100644
--- a/Applications/Python/ogs/_internal/wrap_cli_tools.py
+++ b/Applications/Python/ogs/_internal/wrap_cli_tools.py
@@ -1,7 +1,7 @@
-import os
 import subprocess
 from pathlib import Path
 
+from . import OGS_USE_PATH
 from .provide_ogs_cli_tools_via_wheel import binaries_list, ogs_with_args
 
 # Here, we assume that this script is installed, e.g., in a virtual environment
@@ -43,7 +43,7 @@ class CLI:
 
         cmdline = CLI._get_cmdline("ogs", *args, **kwargs)
 
-        if "OGS_USE_PATH" in os.environ:
+        if OGS_USE_PATH:
             return subprocess.call(cmdline)
 
         return ogs_with_args(cmdline)
@@ -67,9 +67,8 @@ class CLI:
     @staticmethod
     def _get_run_cmd(attr):
         def run_cmd(*args, **kwargs):
-            # TODO provide override via os.environ?
             cmd = OGS_BIN_DIR / attr
-            if "OGS_USE_PATH" in os.environ:
+            if OGS_USE_PATH:
                 cmd = attr
             cmdline = CLI._get_cmdline(cmd, *args, **kwargs)
             return subprocess.call(cmdline)