[2.7] bpo-15663: the 10.6+ macOS installers for 3.6/2.7 now provide a private Tcl/Tk 8.6 (GH-11110)

Mac/BuildScript/build-installer.py

@@ -2,6 +2,8 @@
 """
 This script is used to build "official" universal installers on macOS.
 
+NEW for 3.6.8 / 2.7.16:
+- also build and use Tk 8.6 for 10.6+ installers
 NEW for 3.6.5:
 - support Intel 64-bit-only () and 32-bit-only installer builds
 - build and link with private Tcl/Tk 8.6 for 10.9+ builds
@@ -20,8 +22,8 @@ Sphinx and dependencies are installed into a venv using the python3's pip
 so will fetch them from PyPI if necessary.  Since python3 is now used for
 Sphinx, build-installer.py should also be converted to use python3!
 
-For 10.9 or greater deployment targets, build-installer builds and links
-with its own copy of Tcl/Tk 8.5 and the rest of this paragraph does not
+For 10.6 or greater deployment targets, build-installer builds and links
+with its own copy of Tcl/Tk 8.6 and the rest of this paragraph does not
 apply.  Otherwise, build-installer requires an installed third-party version
 of Tcl/Tk 8.4 (for OS X 10.4 and 10.5 deployment targets) or Tcl/TK 8.5
 (for 10.6 or later) installed in /Library/Frameworks.  When installed,
@@ -188,9 +190,9 @@ USAGE = textwrap.dedent("""\
 EXPECTED_SHARED_LIBS = {}
 
 # Are we building and linking with our own copy of Tcl/TK?
-#   For now, do so if deployment target is 10.9+.
+#   For now, do so if deployment target is 10.6+.
 def internalTk():
-    return getDeptargetTuple() >= (10, 9)
+    return getDeptargetTuple() >= (10, 6)
 
 # List of names of third party software built with this installer.
 # The names will be inserted into the rtf version of the License.

Mac/BuildScript/resources/Welcome.rtf

-{\rtf1\ansi\ansicpg1252\cocoartf1561\cocoasubrtf400
-\cocoascreenfonts1{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fmodern\fcharset0 CourierNewPSMT;}
+{\rtf1\ansi\ansicpg1252\cocoartf1671\cocoasubrtf100
+\cocoascreenfonts1{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;\f2\fmodern\fcharset0 CourierNewPSMT;
+}
 {\colortbl;\red255\green255\blue255;}
 {\*\expandedcolortbl;;}
 \paperw11905\paperh16837\margl1440\margr1440\vieww13360\viewh10920\viewkind0
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
 
 \f0\fs24 \cf0 This package will install 
-\b Python $FULL_VERSION
-\b0  for 
-\b macOS $MACOSX_DEPLOYMENT_TARGET
-\b0 .\
+\f1\b Python $FULL_VERSION
+\f0\b0  for 
+\f1\b macOS $MACOSX_DEPLOYMENT_TARGET
+\f0\b0 .\
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\partightenfactor0
 \cf0 \
 
-\b Python for macOS
-\b0  consists of the Python programming language interpreter, plus a set of programs to allow easy access to it for macOS users including an integrated development environment 
-\b IDLE
-\b0 .\
+\f1\b Python for macOS
+\f0\b0  consists of the Python programming language interpreter, plus a set of programs to allow easy access to it for macOS users including an integrated development environment 
+\f1\b IDLE
+\f0\b0 .\
 \
 
-\b NEW in 2.7.15: 
-\b0 two installer variants (10.9+ 64-bit-only, 10.6+ 64-/32-bit), built-in Tcl/Tk 8.6 support in the 10.9+ variant (no additional third-party downloads!), updated  
-\f1 pip,
+\f1\b NEW in 2.7.15: 
+\f0\b0 two installer variants (10.9+ 64-bit-only, 10.6+ 64-/32-bit), built-in Tcl/Tk 8.6 support in the 10.9+ variant (no additional third-party downloads!), updated  
+\f2 pip,
 \f0  built-in OpenSSL 1.0.2 (click on 
-\f1 Install Certificates
+\f2 Install Certificates
 \f0  for root certificates)\
+\
+
+\f1\b CHANGED in 2.7.16:
+\f0\b0   the 10.6+ variant now also uses a built-in Tcl/Tk 8.6\
 }
\ No newline at end of file

Misc/NEWS.d/next/macOS/2018-12-11-02-50-35.bpo-15663.6tnyd2.rst

+The macOS 10.6+ installer now provides a private copy of Tcl/Tk 8.6, like
+the 10.9+ installer does.