added tix package and python variant for tix (#11599)

* added tix package and python variant for tix

* addressing tix review requests

* python +tix requires +tkinter

var/spack/repos/builtin/packages/python/package.py

@@ -101,6 +101,7 @@ class Python(AutotoolsPackage):
     variant('ctypes',   default=True,  description='Build ctypes module')
     variant('tkinter',  default=False, description='Build tkinter module')
     variant('uuid',     default=False, description='Build uuid module')
+    variant('tix',      default=False, description='Build Tix module')
 
     depends_on('pkgconfig@0.9.0:', type='build')
 
@@ -120,6 +121,7 @@ class Python(AutotoolsPackage):
     depends_on('libffi', when='+ctypes')
     depends_on('tk', when='+tkinter')
     depends_on('tcl', when='+tkinter')
+    depends_on('tix', when='+tix')
     depends_on('libuuid', when='+uuid')
 
     patch('tkinter.patch', when='@:2.8,3.3: platform=darwin')
@@ -139,6 +141,8 @@ class Python(AutotoolsPackage):
         when='+optimizations',
         msg='+optimizations is incompatible with +shared in python@2.X'
     )
+    conflicts('+tix', when='~tkinter',
+              msg='python+tix requires python+tix+tkinter')
 
     _DISTUTIL_VARS_TO_SAVE = ['LDSHARED']
     _DISTUTIL_CACHE_FILENAME = 'sysconfig.json'

var/spack/repos/builtin/packages/tcl/package.py

@@ -25,7 +25,7 @@ class Tcl(AutotoolsPackage):
     version('8.6.5', '0e6426a4ca9401825fbc6ecf3d89a326')
     version('8.6.4', 'd7cbb91f1ded1919370a30edd1534304')
     version('8.6.3', 'db382feca91754b7f93da16dc4cdad1f')
-    version('8.5.19', '0e6426a4ca9401825fbc6ecf3d89a326')
+    version('8.5.19', '4f4e1c919f6a6dbb37e9a12d429769a6')
 
     extendable = True
 

var/spack/repos/builtin/packages/tix/package.py

@@ -0,0 +1,32 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Tix(AutotoolsPackage):
+    """Tix is a powerful high-level widget set that expands the capabilities
+       of your Tk/Tcl and Python applications."""
+
+    homepage = "https://sourceforge.net/projects/tix/"
+    url      = "https://sourceforge.net/projects/tix/files/tix/8.4.3/Tix8.4.3-src.tar.gz/download"
+    version('8.4.3', '2b8bf4b10a852264678182652f477e59')
+
+    extends('tcl')
+    depends_on('tk@:8.5.99')
+    depends_on('tcl@:8.5.99')
+
+    def configure_args(self):
+        spec = self.spec
+        config_args = ['--with-tcl={0}'.format(spec['tcl'].prefix.lib),
+                       '--with-tk={0}'.format(spec['tk'].prefix.lib),
+                       '--exec-prefix={0}'.format(spec.prefix)]
+        return config_args
+
+    def install(self, spec, prefix):
+        make('install')
+        with working_dir(self.prefix.lib):
+            symlink('Tix{0}/libTix{0}.{1}'.format(self.version, dso_suffix),
+                    'libtix.{0}'.format(dso_suffix))

var/spack/repos/builtin/packages/tk/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+import os
 
 
 class Tk(AutotoolsPackage):
@@ -20,14 +21,33 @@ class Tk(AutotoolsPackage):
     version('8.6.6', 'dd7dbb3a6523c42d05f6ab6e86096e99')
     version('8.6.5', '11dbbd425c3e0201f20d6a51482ce6c4')
     version('8.6.3', '85ca4dbf4dcc19777fd456f6ee5d0221')
+    version('8.5.19', 'e89df710447cce0fc0bde65667c12f85')
 
     extends('tcl')
 
-    depends_on('tcl@8.6:')
+    depends_on('tcl@8.6:', when='@8.6:')
     depends_on('libx11')
 
     configure_directory = 'unix'
 
+    def install(self, spec, prefix):
+        with working_dir(self.build_directory):
+            make('install')
+
+            # Some applications like Expect require private Tk headers.
+            make('install-private-headers')
+
+            # Copy source to install tree
+            installed_src = join_path(
+                self.spec.prefix, 'share', self.name, 'src')
+            stage_src = os.path.realpath(self.stage.source_path)
+            install_tree(stage_src, installed_src)
+
+            # Replace stage dir -> installed src dir in tkConfig
+            filter_file(
+                stage_src, installed_src,
+                join_path(self.spec.prefix, 'lib', 'tkConfig.sh'))
+
     @property
     def libs(self):
         return find_libraries(['libtk{0}'.format(self.version.up_to(2))],