1 files changed, 6 insertions, 2 deletions
diff --git a/pkgs/development/python-modules/generic/default.nix b/pkgs/development/python-modules/generic/default.nix
index 75fb974e735..4c9c53aab83 100644
--- a/pkgs/development/python-modules/generic/default.nix
+++ b/pkgs/development/python-modules/generic/default.nix
@@ -34,7 +34,10 @@
 # The difference is that `pythonPath' is not propagated to the user
 # environment.  This is preferrable for programs because it doesn't
 # pollute the user environment.
-,  pythonPath ? []
+, pythonPath ? []
+
+# used to disable derivation, useful for specific python versions
+, disabled ? false
 
 , meta ? {}
 
@@ -46,8 +49,9 @@
 
 , ... } @ attrs:
 
+
 # Keep extra attributes from `attrs`, e.g., `patchPhase', etc.
-python.stdenv.mkDerivation (attrs // {
+if disabled then throw "${name} not supported for interpreter ${python.executable}" else python.stdenv.mkDerivation (attrs // {
   inherit doCheck;
 
   name = namePrefix + name;