buildPythonPackage: refactor

pkgs/development/interpreters/python/build-python-package-wheel.nix

@@ -0,0 +1,20 @@
+# This function provides specific bits for building a wheel-based Python package.
+
+{
+}:
+
+{ ... } @ attrs:
+
+attrs // {
+  unpackPhase = ''
+    mkdir dist
+    cp $src dist/"''${src#*-}"
+  '';
+
+  # Wheels are pre-compiled
+  buildPhase = attrs.buildPhase or ":";
+  installCheckPhase = attrs.checkPhase or ":";
+
+  # Wheels don't have any checks to run
+  doCheck = attrs.doCheck or false;
+}