Python: rename internal parameters related to splicing and fix splicing

pkgs/development/interpreters/python/cpython/2.7/default.nix

@@ -18,8 +18,8 @@
 , ucsEncoding ? 4
 # For the Python package set
 , packageOverrides ? (self: super: {})
-, buildPackages
 , pkgsBuildBuild
+, pkgsBuildHost
 , pkgsBuildTarget
 , pkgsHostHost
 , pkgsTargetTarget
@@ -28,6 +28,7 @@
 , passthruFun
 , static ? false
 , enableOptimizations ? (!stdenv.isDarwin)
+, pythonAttr ? "python${sourceVersion.major}${sourceVersion.minor}"
 }:
 
 assert x11Support -> tcl != null
@@ -38,9 +39,8 @@ assert x11Support -> tcl != null
 with stdenv.lib;
 
 let
-
-  pythonAttr = "python${sourceVersion.major}${sourceVersion.minor}";
-  pythonForBuild = buildPackages.${pythonAttr};
+  buildPackages = pkgsBuildHost;
+  inherit (passthru) pythonForBuild;
 
   passthru = passthruFun rec {
     inherit self sourceVersion packageOverrides;
@@ -49,11 +49,12 @@ let
     executable = libPrefix;
     pythonVersion = with sourceVersion; "${major}.${minor}";
     sitePackages = "lib/${libPrefix}/site-packages";
-    inherit hasDistutilsCxxPatch pythonForBuild;
-    pythonPackagesBuildBuild = pkgsBuildBuild.${pythonAttr};
-    pythonPackagesBuildTarget = pkgsBuildTarget.${pythonAttr};
-    pythonPackagesHostHost = pkgsHostHost.${pythonAttr};
-    pythonPackagesTargetTarget = pkgsTargetTarget.${pythonAttr} or {};
+    inherit hasDistutilsCxxPatch;
+    pythonOnBuildForBuild = pkgsBuildBuild.${pythonAttr};
+    pythonOnBuildForHost = pkgsBuildHost.${pythonAttr};
+    pythonOnBuildForTarget = pkgsBuildTarget.${pythonAttr};
+    pythonOnHostForHost = pkgsHostHost.${pythonAttr};
+    pythonOnTargetForTarget = pkgsTargetTarget.${pythonAttr} or {};
   } // {
     inherit ucsEncoding;
   };

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

@@ -19,12 +19,11 @@
 , nukeReferences
 # For the Python package set
 , packageOverrides ? (self: super: {})
-, buildPackages
 , pkgsBuildBuild
+, pkgsBuildHost
 , pkgsBuildTarget
 , pkgsHostHost
 , pkgsTargetTarget
-, pythonForBuild ? buildPackages.${pythonAttr}
 , sourceVersion
 , sha256
 , passthruFun
@@ -58,7 +57,8 @@ assert bluezSupport -> bluez != null;
 with stdenv.lib;
 
 let
-
+  buildPackages = pkgsBuildHost;
+  inherit (passthru) pythonForBuild;
 
   passthru = passthruFun rec {
     inherit self sourceVersion packageOverrides;
@@ -67,11 +67,12 @@ let
     executable = libPrefix;
     pythonVersion = with sourceVersion; "${major}.${minor}";
     sitePackages = "lib/${libPrefix}/site-packages";
-    inherit hasDistutilsCxxPatch pythonForBuild;
-    pythonPackagesBuildBuild = pkgsBuildBuild.${pythonAttr};
-    pythonPackagesBuildTarget = pkgsBuildTarget.${pythonAttr};
-    pythonPackagesHostHost = pkgsHostHost.${pythonAttr};
-    pythonPackagesTargetTarget = pkgsTargetTarget.${pythonAttr} or {};
+    inherit hasDistutilsCxxPatch;
+    pythonOnBuildForBuild = pkgsBuildBuild.${pythonAttr};
+    pythonOnBuildForHost = pkgsBuildHost.${pythonAttr};
+    pythonOnBuildForTarget = pkgsBuildTarget.${pythonAttr};
+    pythonOnHostForHost = pkgsHostHost.${pythonAttr};
+    pythonOnTargetForTarget = pkgsTargetTarget.${pythonAttr} or {};
   };
 
   version = with sourceVersion; "${major}.${minor}.${patch}${suffix}";
@@ -95,8 +96,6 @@ let
 
   hasDistutilsCxxPatch = !(stdenv.cc.isGNU or false);
 
-  inherit pythonForBuild;
-
   pythonForBuildInterpreter = if stdenv.hostPlatform == stdenv.buildPlatform then
     "$out/bin/python"
   else pythonForBuild.interpreter;

pkgs/development/interpreters/python/default.nix

@@ -14,12 +14,12 @@ with pkgs;
     , packageOverrides
     , sitePackages
     , hasDistutilsCxxPatch
-    , pythonPackagesBuildBuild
-    , pythonForBuild # provides pythonPackagesBuildHost
-    , pythonPackagesBuildTarget
-    , pythonPackagesHostHost
-    , self # is pythonPackagesHostTarget
-    , pythonPackagesTargetTarget
+    , pythonOnBuildForBuild
+    , pythonOnBuildForHost
+    , pythonOnBuildForTarget
+    , pythonOnHostForHost
+    , pythonOnTargetForTarget
+    , self # is pythonOnHostForTarget
     }: let
       pythonPackages = callPackage
         ({ pkgs, stdenv, python, overrides }: let
@@ -28,11 +28,11 @@ with pkgs;
             python = self;
           };
           otherSplices = {
-            selfBuildBuild = pythonPackagesBuildBuild;
-            selfBuildHost = pythonForBuild.pkgs;
-            selfBuildTarget = pythonPackagesBuildTarget;
-            selfHostHost = pythonPackagesHostHost;
-            selfTargetTarget = pythonPackagesTargetTarget;
+            selfBuildBuild = pythonOnBuildForBuild.pkgs;
+            selfBuildHost = pythonOnBuildForHost.pkgs;
+            selfBuildTarget = pythonOnBuildForTarget.pkgs;
+            selfHostHost = pythonOnHostForHost.pkgs;
+            selfTargetTarget = pythonOnTargetForTarget.pkgs or {}; # There is no Python TargetTarget.
           };
           keep = self: {
             # TODO maybe only define these here so nothing is needed to be kept in sync.
@@ -99,7 +99,10 @@ with pkgs;
         inherit sourceVersion;
         pythonAtLeast = lib.versionAtLeast pythonVersion;
         pythonOlder = lib.versionOlder pythonVersion;
-        inherit hasDistutilsCxxPatch pythonForBuild;
+        inherit hasDistutilsCxxPatch;
+        # TODO: rename to pythonOnBuild
+        # Not done immediately because its likely used outside Nixpkgs.
+        pythonForBuild = pythonOnBuildForHost;
 
         tests = callPackage ./tests.nix {
           python = self;
@@ -188,7 +191,6 @@ in {
   # Minimal versions of Python (built without optional dependencies)
   python3Minimal = (python38.override {
     self = python3Minimal;
-    pythonForBuild = pkgs.buildPackages.python3Minimal;
     # strip down that python version as much as possible
     openssl = null;
     readline = null;

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

@@ -5,10 +5,16 @@
 , python-setup-hook
 # For the Python package set
 , packageOverrides ? (self: super: {})
+, pkgsBuildBuild
+, pkgsBuildHost
+, pkgsBuildTarget
+, pkgsHostHost
+, pkgsTargetTarget
 , sourceVersion
 , pythonVersion
 , sha256
 , passthruFun
+, pythonAttr ? "pypy${stdenv.lib.substring 0 1 pythonVersion}${stdenv.lib.substring 2 3 pythonVersion}"
 }:
 
 assert zlibSupport -> zlib != null;
@@ -25,12 +31,11 @@ let
     sitePackages = "site-packages";
     hasDistutilsCxxPatch = false;
 
-    # No cross-compiling for now.
-    pythonForBuild = self;
-    pythonPackagesBuildBuild = {};
-    pythonPackagesBuildTarget = {};
-    pythonPackagesHostHost = {};
-    pythonPackagesTargetTarget = {};
+    pythonOnBuildForBuild = pkgsBuildBuild.${pythonAttr};
+    pythonOnBuildForHost = pkgsBuildHost.${pythonAttr};
+    pythonOnBuildForTarget = pkgsBuildTarget.${pythonAttr};
+    pythonOnHostForHost = pkgsHostHost.${pythonAttr};
+    pythonOnTargetForTarget = pkgsTargetTarget.${pythonAttr} or {};
   };
   pname = passthru.executable;
   version = with sourceVersion; "${major}.${minor}.${patch}";

pkgs/development/interpreters/python/tests/test_nix_pythonprefix/default.nix

@@ -4,7 +4,7 @@ let
 
   python = let
     packageOverrides = self: super: {
-      typeddep = super.callPackage ./typeddep {};
+      typeddep = self.callPackage ./typeddep {};
     };
   in interpreter.override {inherit packageOverrides; self = python;};