--- a/testing/mozharness/configs/builds/releng_base_android_64_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_android_64_builds.py
@@ -12,19 +12,16 @@ config = {
         'setup-mock',
         'build',
         'upload-files',
         'sendchange',
         'multi-l10n',
         'update',  # decided by query_is_nightly()
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     # mock shtuff
     'mock_mozilla_dir':  '/builds/mock_mozilla',
     'mock_target': 'mozilla-centos6-x86_64-android',
     'mock_files': [
         ('/home/cltbld/.ssh', '/home/mock_mozilla/.ssh'),
@@ -98,17 +95,17 @@ config = {
         'MOZ_OBJDIR': 'obj-firefox',
         'TINDERBOX_OUTPUT': '1',
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/bin:/usr/bin',
+        'PATH': '/usr/local/bin:/bin:/usr/bin',
         'SHIP_LICENSED_FONTS': '1',
     },
     'upload_env': {
         # stage_server is dictated from build_pool_specifics.py
         'UPLOAD_HOST': '%(stage_server)s',
         'UPLOAD_USER': '%(stage_username)s',
         'UPLOAD_SSH_KEY': '/home/mock_mozilla/.ssh/%(stage_ssh_key)s',
         'UPLOAD_TO_TEMP': '1',

--- a/testing/mozharness/configs/builds/releng_base_linux_32_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_linux_32_builds.py
@@ -16,19 +16,16 @@ config = {
         'setup-mock',
         'build',
         'upload-files',
         'sendchange',
         'check-test',
         'update',  # decided by query_is_nightly()
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     # mock shtuff
     'mock_mozilla_dir':  '/builds/mock_mozilla',
     'mock_target': 'mozilla-centos6-x86_64',
     'mock_files': [
         ('/home/cltbld/.ssh', '/home/mock_mozilla/.ssh'),
@@ -82,17 +79,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # 32 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib/ccache:\
+        'PATH': '/usr/local/bin:/usr/lib/ccache:\
 /bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:\
 /tools/python27/bin:/tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib",
     },
     'upload_env': {
         # stage_server is dictated from build_pool_specifics.py
         'UPLOAD_HOST': '%(stage_server)s',
         'UPLOAD_USER': '%(stage_username)s',

--- a/testing/mozharness/configs/builds/releng_base_linux_64_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_linux_64_builds.py
@@ -15,19 +15,16 @@ config = {
         'setup-mock',
         'build',
         'upload-files',
         'sendchange',
         'check-test',
         'update',  # decided by query_is_nightly()
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     # mock shtuff
     'mock_mozilla_dir':  '/builds/mock_mozilla',
     'mock_target': 'mozilla-centos6-x86_64',
     'mock_files': [
         ('/home/cltbld/.ssh', '/home/mock_mozilla/.ssh'),
@@ -81,17 +78,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib64",
         ##
     },
     'upload_env': {
         # stage_server is dictated from build_pool_specifics.py
         'UPLOAD_HOST': '%(stage_server)s',

--- a/testing/mozharness/configs/builds/releng_base_mac_64_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_mac_64_builds.py
@@ -12,19 +12,16 @@ config = {
         'checkout-sources',
         'build',
         'upload-files',
         'sendchange',
         'check-test',
         'update',  # decided by query_is_nightly()
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': False,
@@ -49,17 +46,17 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'upload_env': {
         # stage_server is dictated from build_pool_specifics.py
         'UPLOAD_HOST': '%(stage_server)s',
         'UPLOAD_USER': '%(stage_username)s',
         'UPLOAD_SSH_KEY': '/Users/cltbld/.ssh/%(stage_ssh_key)s',

--- a/testing/mozharness/configs/builds/releng_base_mac_64_cross_builds.py
+++ b/testing/mozharness/configs/builds/releng_base_mac_64_cross_builds.py
@@ -9,19 +9,16 @@ config = {
     'default_actions': [
         'clobber',
         'clone-tools',
         'checkout-sources',
         'build',
         'update',  # decided by query_is_nightly()
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': True,
     'secret_files': [
         {'filename': '/builds/gapi.data',
          'secret_name': 'project/releng/gecko/build/level-%(scm-level)s/gapi.data',
          'min_scm_level': 1},
         {'filename': '/builds/mozilla-desktop-geoloc-api.key',
@@ -52,17 +49,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         ##
     },
     'upload_env': {
         # stage_server is dictated from build_pool_specifics.py
         'UPLOAD_HOST': '%(stage_server)s',
         'UPLOAD_USER': '%(stage_username)s',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/32_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/32_artifact.py
@@ -13,19 +13,16 @@ config = {
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': True,
@@ -51,17 +48,17 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # 32 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib/ccache:\
+        'PATH': '/usr/local/bin:/usr/lib/ccache:\
 /bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:\
 /tools/python27/bin:/tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib",
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',
         'yasm', 'wget',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/32_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/32_debug.py
@@ -25,17 +25,17 @@ config = {
         'HG_SHARE_BASE_DIR': '/builds/hg-shared',
         'MOZ_OBJDIR': MOZ_OBJDIR,
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # 32 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': '/tools/gcc-4.3.3/installed/lib:\
 %s/dist/bin' % (MOZ_OBJDIR,),
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         'TINDERBOX_OUTPUT': '1',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux32/debug',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/32_debug_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/32_debug_artifact.py
@@ -15,19 +15,16 @@ config = {
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': MOZ_OBJDIR,
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': True,
@@ -57,17 +54,17 @@ config = {
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # debug-specific
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         # 32 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib/ccache:\
+        'PATH': '/usr/local/bin:/usr/lib/ccache:\
 /bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:\
 /tools/python27/bin:/tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib",
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',
         'yasm', 'wget',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_add-on-devel.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_add-on-devel.py
@@ -27,15 +27,15 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/home/worker/workspace/build/src/gcc/bin:/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/home/worker/workspace/build/src/gcc/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/add-on-devel',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_artifact.py
@@ -6,19 +6,16 @@ config = {
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'secret_files': [
         {'filename': '/builds/gapi.data',
          'secret_name': 'project/releng/gecko/build/level-%(scm-level)s/gapi.data',
          'min_scm_level': 1},
         {'filename': '/builds/mozilla-desktop-geoloc-api.key',
@@ -52,17 +49,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib64",
         ##
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan.py
@@ -32,15 +32,15 @@ releng.manifest",
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/nightly-asan',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_and_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_and_debug.py
@@ -33,15 +33,15 @@ releng.manifest",
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/debug-asan',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_tc.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_tc.py
@@ -30,15 +30,15 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/nightly-asan',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_tc_and_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_tc_and_debug.py
@@ -31,15 +31,15 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/debug-asan',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_code_coverage.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_code_coverage.py
@@ -29,15 +29,15 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/code-coverage',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_debug.py
@@ -26,17 +26,17 @@ config = {
         'MOZ_OBJDIR': MOZ_OBJDIR,
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         # 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': '/tools/gcc-4.3.3/installed/lib64:\
 %s/dist/bin' % (MOZ_OBJDIR,),
         'TINDERBOX_OUTPUT': '1',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/debug',
     #######################

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_debug_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_debug_artifact.py
@@ -8,19 +8,16 @@ config = {
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     'vcs_share_base': '/builds/hg-shared',
     'objdir': MOZ_OBJDIR,
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': True,
     # debug specific
     'debug_build': True,
@@ -50,17 +47,17 @@ config = {
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # debug-specific
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib64",
         ##
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_fuzzing_asan_tc.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_fuzzing_asan_tc.py
@@ -32,15 +32,15 @@ config = {
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'ASAN_OPTIONS': 'detect_leaks=0',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/nightly-fuzzing-asan',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_noopt_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_noopt_debug.py
@@ -25,17 +25,17 @@ config = {
         'MOZ_OBJDIR': MOZ_OBJDIR,
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         # 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': '/tools/gcc-4.3.3/installed/lib64:\
 %s/dist/bin' % (MOZ_OBJDIR,),
         'TINDERBOX_OUTPUT': '1',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/noopt-debug',
 }

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_stat_and_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_stat_and_debug.py
@@ -5,19 +5,16 @@ config = {
     'default_actions': [
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': True,
@@ -42,17 +39,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib64",
         ##
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_stat_and_opt.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_stat_and_opt.py
@@ -5,19 +5,16 @@ config = {
     'default_actions': [
         'clobber',
         'clone-tools',
         'checkout-sources',
         'setup-mock',
         'build',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': True,
@@ -42,17 +39,17 @@ config = {
         'TOOLTOOL_CACHE': '/home/worker/tooltool-cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
         'LD_LIBRARY_PATH': "/tools/gcc-4.3.3/installed/lib64",
         ##
     },
     'mock_packages': [
         'autoconf213', 'python', 'mozilla-python27', 'zip', 'mozilla-python27-mercurial',
         'git', 'ccache', 'perl-Test-Simple', 'perl-Config-General',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_valgrind.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_valgrind.py
@@ -32,16 +32,16 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/buildbot/bin:/usr/local/bin:/usr/lib64/ccache:/bin:\
+        'PATH': '/usr/local/bin:/usr/lib64/ccache:/bin:\
 /usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/tools/git/bin:/tools/python27/bin:\
 /tools/python27-mercurial/bin:/home/cltbld/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/linux64/valgrind',
     #######################
     'artifact_flag_build_variant_in_try': None,
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_add-on-devel.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_add-on-devel.py
@@ -28,15 +28,15 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/add-on-devel',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_artifact.py
@@ -10,19 +10,16 @@ config = {
         'clone-tools',
         # 'setup-mock',
         'checkout-sources',
         'build',
         'upload-files',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': 'obj-firefox',
     'tooltool_script': ["/builds/tooltool.py"],
     'tooltool_bootstrap': "setup.sh",
     'enable_count_ctors': False,
@@ -49,16 +46,16 @@ config = {
         'TOOLTOOL_CACHE': '/builds/tooltool_cache',
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/artifact',
     'tooltool_manifest_src': 'browser/config/tooltool-manifests/macosx64/releng.manifest',
     #########################################################################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_cross_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_cross_debug.py
@@ -27,16 +27,16 @@ config = {
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/debug',
     'artifact_flag_build_variant_in_try': 'cross-debug-artifact',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_cross_noopt_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_cross_noopt_debug.py
@@ -27,16 +27,16 @@ config = {
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/cross-noopt-debug',
     'artifact_flag_build_variant_in_try': 'cross-debug-artifact',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug.py
@@ -29,15 +29,15 @@ config = {
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/debug',
     #######################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug_artifact.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_debug_artifact.py
@@ -11,19 +11,16 @@ config = {
         'clobber',
         'clone-tools',
         # 'setup-mock',
         'checkout-sources',
         'build',
         'sendchange',
     ],
     "buildbot_json_path": "buildprops.json",
-    'exes': {
-        "buildbot": "/tools/buildbot/bin/buildbot",
-    },
     'app_ini_path': '%(obj_dir)s/dist/bin/application.ini',
     # decides whether we want to use moz_sign_cmd in env
     'enable_signing': False,
     'vcs_share_base': '/builds/hg-shared',
     'objdir': MOZ_OBJDIR,
     # debug specific
     'debug_build': True,
     'enable_talos_sendchange': False,
@@ -49,15 +46,15 @@ config = {
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         # debug-specific
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         ## 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
         ##
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/debug-artifact',
     #########################################################################
 }

--- a/testing/mozharness/configs/builds/releng_sub_mac_configs/64_stat_and_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_mac_configs/64_stat_and_debug.py
@@ -34,14 +34,14 @@ clang.manifest",
         'TOOLTOOL_HOME': '/builds',
         'MOZ_CRASHREPORTER_NO_REPORT': '1',
         'CCACHE_DIR': '/builds/ccache',
         'CCACHE_COMPRESS': '1',
         'CCACHE_UMASK': '002',
         'LC_ALL': 'C',
         'XPCOM_DEBUG_BREAK': 'stack-and-abort',
         # 64 bit specific
-        'PATH': '/tools/python/bin:/tools/buildbot/bin:/opt/local/bin:/usr/bin:'
+        'PATH': '/tools/python/bin:/opt/local/bin:/usr/bin:'
                 '/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin',
     },
     'src_mozconfig': 'browser/config/mozconfigs/macosx64/debug-static-analysis',
     #######################
 }

--- a/testing/mozharness/configs/firefox_ui_tests/taskcluster.py
+++ b/testing/mozharness/configs/firefox_ui_tests/taskcluster.py
@@ -1,17 +1,16 @@
 # Config file for firefox ui tests run via TaskCluster.
 
 
 config = {
     "vcs_share_base": "/builds/hg-shared",
 
     "exes": {
-        'python': '/tools/buildbot/bin/python',
-        'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+        'virtualenv': '/tools/virtualenv/bin/virtualenv',
         'tooltool.py': "/tools/tooltool.py",
     },
 
     "find_links": [
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,
 

--- a/testing/mozharness/configs/hazards/common.py
+++ b/testing/mozharness/configs/hazards/common.py
@@ -19,17 +19,17 @@ config = {
     "sixgill": "sixgill/usr/libexec/sixgill",
     "sixgill_bin": "sixgill/usr/bin",
 
     "python": "python",
 
     "exes": {
         'gittool.py': '%(abs_tools_dir)s/buildfarm/utils/gittool.py',
         'tooltool.py': '/tools/tooltool.py',
-        "virtualenv": [PYTHON_DIR + "/bin/python", "/tools/misc-python/virtualenv.py"],
+        "virtualenv": "/tools/virtualenv/bin/virtualenv",
     },
 
     "force_clobber": True,
     'vcs_share_base': HG_SHARE_BASE_DIR,
 
     "repos": [{
         "repo": "https://hg.mozilla.org/build/tools",
         "branch": "default",

--- a/testing/mozharness/configs/marionette/prod_config.py
+++ b/testing/mozharness/configs/marionette/prod_config.py
@@ -5,18 +5,17 @@ HG_SHARE_BASE_DIR = "/builds/hg-shared"
 
 config = {
     # marionette options
     "marionette_address": "localhost:2828",
     "test_manifest": "unit-tests.ini",
 
     "vcs_share_base": HG_SHARE_BASE_DIR,
     "exes": {
-        'python': '/tools/buildbot/bin/python',
-        'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+        'virtualenv': '/tools/virtualenv/bin/virtualenv',
         'tooltool.py': "/tools/tooltool.py",
     },
 
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,

--- a/testing/mozharness/configs/releng_infra_configs/builders.py
+++ b/testing/mozharness/configs/releng_infra_configs/builders.py
@@ -5,28 +5,26 @@ from mozharness.base.script import platf
 # These are values specific to each platform on Release Engineering machines
 PYTHON_WIN32 = 'c:/mozilla-build/python27/python.exe'
 # These are values specific to running machines on Release Engineering machines
 # to run it locally on your machines append --cfg developer_config.py
 PLATFORM_CONFIG = {
     'linux64': {
         'exes': {
             'gittool.py': '/usr/local/bin/gittool.py',
-            'python': '/tools/buildbot/bin/python',
-            'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+            'virtualenv': '/tools/virtualenv/bin/virtualenv',
         },
         'env': {
             'DISPLAY': ':2',
         }
     },
     'macosx': {
         'exes': {
             'gittool.py': '/usr/local/bin/gittool.py',
-            'python': '/tools/buildbot/bin/python',
-            'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+            'virtualenv': '/tools/virtualenv/bin/virtualenv',
         },
     },
     'win32': {
         "exes": {
             'gittool.py': [PYTHON_WIN32, 'c:/builds/hg-shared/build/tools/buildfarm/utils/gittool.py'],
             # Otherwise, depending on the PATH we can pick python 2.6 up
             'python': PYTHON_WIN32,
             'virtualenv': [PYTHON_WIN32, 'c:/mozilla-build/buildbotve/virtualenv.py'],

--- a/testing/mozharness/configs/releng_infra_configs/testers.py
+++ b/testing/mozharness/configs/releng_infra_configs/testers.py
@@ -14,37 +14,37 @@ external_tools_path = os.path.join(
 # These are values specific to each platform on Release Engineering machines
 PYTHON_WIN32 = 'c:/mozilla-build/python27/python.exe'
 # These are values specific to running machines on Release Engineering machines
 # to run it locally on your machines append --cfg developer_config.py
 PLATFORM_CONFIG = {
     'linux': {
         'exes': {
             'gittool.py': os.path.join(external_tools_path, 'gittool.py'),
-            'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+            'virtualenv': '/tools/virtualenv/bin/virtualenv',
         },
         'env': {
             'DISPLAY': ':0',
             'PATH': '%(PATH)s:' + external_tools_path,
         }
     },
     'linux64': {
         'exes': {
             'gittool.py': os.path.join(external_tools_path, 'gittool.py'),
-            'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+            'virtualenv': '/tools/virtualenv/bin/virtualenv',
         },
         'env': {
             'DISPLAY': ':0',
             'PATH': '%(PATH)s:' + external_tools_path,
         }
     },
     'macosx': {
         'exes': {
             'gittool.py': os.path.join(external_tools_path, 'gittool.py'),
-            'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+            'virtualenv': '/tools/virtualenv/bin/virtualenv',
         },
         'env': {
             'PATH': '%(PATH)s:' + external_tools_path,
         }
     },
     'win32': {
         "exes": {
             'gittool.py': [PYTHON_WIN32, os.path.join(external_tools_path, 'gittool.py')],

--- a/testing/mozharness/configs/talos/linux_config.py
+++ b/testing/mozharness/configs/talos/linux_config.py
@@ -1,32 +1,23 @@
 import os
 import platform
 
-PYTHON = '/tools/buildbot/bin/python'
 VENV_PATH = '%s/build/venv' % os.getcwd()
 if platform.architecture()[0] == '64bit':
     TOOLTOOL_MANIFEST_PATH = "config/tooltool-manifests/linux64/releng.manifest"
     MINIDUMP_STACKWALK_PATH = "linux64-minidump_stackwalk"
 else:
     TOOLTOOL_MANIFEST_PATH = "config/tooltool-manifests/linux32/releng.manifest"
     MINIDUMP_STACKWALK_PATH = "linux32-minidump_stackwalk"
 
 exes = {
     'tooltool.py': "/tools/tooltool.py",
 }
 
-# this Python only exists on Buildbot slaves, not on taskcluster workers where both
-# Python and virtualenv can be found in $PATH
-if os.path.exists(PYTHON):
-    exes.update({
-        'python': PYTHON,
-        'virtualenv': [PYTHON, '/tools/misc-python/virtualenv.py'],
-    })
-
 config = {
     "log_name": "talos",
     "buildbot_json_path": "buildprops.json",
     "installer_path": "installer.exe",
     "virtualenv_path": VENV_PATH,
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",

--- a/testing/mozharness/configs/talos/mac_config.py
+++ b/testing/mozharness/configs/talos/mac_config.py
@@ -5,32 +5,29 @@ SCREEN_RESOLUTION_CHECK = {
     "cmd": ["bash", "-c", "screenresolution get && screenresolution list && system_profiler SPDisplaysDataType"],
     "architectures": ["32bit", "64bit"],
     "halt_on_failure": False,
     "enabled": ENABLE_SCREEN_RESOLUTION_CHECK
 }
 
 import os
 
-PYTHON = '/tools/buildbot/bin/python'
 VENV_PATH = '%s/build/venv' % os.getcwd()
 
 config = {
     "log_name": "talos",
     "buildbot_json_path": "buildprops.json",
     "installer_path": "installer.exe",
     "virtualenv_path": VENV_PATH,
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,
     "exes": {
-        'python': PYTHON,
-        'virtualenv': [PYTHON, '/tools/misc-python/virtualenv.py'],
         'tooltool.py': "/tools/tooltool.py",
     },
     "title": os.uname()[1].lower().split('.')[0],
     "default_actions": [
         "clobber",
         "read-buildbot-config",
         "download-and-extract",
         "populate-webroot",

--- a/testing/mozharness/configs/unittests/linux_unittest.py
+++ b/testing/mozharness/configs/unittests/linux_unittest.py
@@ -31,18 +31,17 @@ else:
                                       "i386-redhat-linux-gnu.sup")
     NODEJS_PATH = "node-linux-x86/bin/node"
     NODEJS_TOOLTOOL_MANIFEST_PATH = "config/tooltool-manifests/linux32/nodejs.manifest"
 
 #####
 config = {
     "buildbot_json_path": "buildprops.json",
     "exes": {
-        "python": "/tools/buildbot/bin/python",
-        "virtualenv": ["/tools/buildbot/bin/python", "/tools/misc-python/virtualenv.py"],
+        "virtualenv": "/tools/virtualenv/bin/virtualenv",
         "tooltool.py": "/tools/tooltool.py",
     },
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,
     ###

--- a/testing/mozharness/configs/unittests/mac_unittest.py
+++ b/testing/mozharness/configs/unittests/mac_unittest.py
@@ -5,18 +5,17 @@ INSTALLER_PATH = os.path.join(os.getcwd(
 XPCSHELL_NAME = 'xpcshell'
 EXE_SUFFIX = ''
 DISABLE_SCREEN_SAVER = False
 ADJUST_MOUSE_AND_SCREEN = False
 #####
 config = {
     "buildbot_json_path": "buildprops.json",
     "exes": {
-        'python': '/tools/buildbot/bin/python',
-        'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+        'virtualenv': '/tools/virtualenv/bin/virtualenv',
         'tooltool.py': "/tools/tooltool.py",
     },
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,
     ###

--- a/testing/mozharness/configs/web_platform_tests/prod_config.py
+++ b/testing/mozharness/configs/web_platform_tests/prod_config.py
@@ -12,18 +12,17 @@ config = {
         "--config=%(test_path)s/wptrunner.ini",
         "--ca-cert-path=%(test_path)s/certs/cacert.pem",
         "--host-key-path=%(test_path)s/certs/web-platform.test.key",
         "--host-cert-path=%(test_path)s/certs/web-platform.test.pem",
         "--certutil-binary=%(test_install_path)s/bin/certutil",
     ],
 
     "exes": {
-        'python': '/tools/buildbot/bin/python',
-        'virtualenv': ['/tools/buildbot/bin/python', '/tools/misc-python/virtualenv.py'],
+        'virtualenv': '/tools/virtualenv/bin/virtualenv',
         'tooltool.py': "/tools/tooltool.py",
     },
 
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],