Revert "Revert "buildPython*: store dist (wheel/sdist) in dist output""

Most packages were fixed on python-unstable.

This reverts commit 0a4898c21a.

pkgs/development/interpreters/python/hooks/default.nix

@@ -114,6 +114,11 @@ in rec {
       };
     } ./python-namespaces-hook.sh) {};
 
+  pythonOutputDistHook = callPackage ({ }:
+    makeSetupHook {
+      name = "python-output-dist-hook";
+  } ./python-output-dist-hook.sh ) {};
+
   pythonRecompileBytecodeHook = callPackage ({ }:
     makeSetupHook {
       name = "python-recompile-bytecode-hook";

pkgs/development/interpreters/python/hooks/python-output-dist-hook.sh

@@ -0,0 +1,10 @@
+# Setup hook for storing dist folder (wheels/sdists) in a separate output
+echo "Sourcing python-catch-conflicts-hook.sh"
+
+pythonOutputDistPhase() {
+    echo "Executing pythonOutputDistPhase"
+    mv "dist" "$dist"
+    echo "Finished executing pythonOutputDistPhase"
+}
+
+preFixupPhases+=" pythonOutputDistPhase"