prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  VS 2017 backend emits bad WindowsTargetPlatformVersion value
  When I tried generating a VS 2017 solution, the generated app.vcxproj contained this:
  
  ```
  <WindowsTargetPlatformVersion>10.0.14393.0\</WindowsTargetPlatformVersion>
  ```
  
  Which then causes errors in other `.targets` files attempting to do a numeric comparison against that.
  This value is probably taken straight from one of these environment variables:
  
  ```
  WindowsSDKLibVersion=10.0.14393.0\
  WindowsSDKVersion=10.0.14393.0\
  ```
  
  The trailing backslash is a bit suspect, but may be there intentionally so it can be concatenated to 
  ```
  WindowsSdkDir=C:\Program Files (x86)\Windows Kits\10\
  ```
  directly.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `mesonbuild/backend/vs2017backend.py`
  Content:
  ```
  1 # Copyright 2014-2016 The Meson development team
  2 
  3 # Licensed under the Apache License, Version 2.0 (the "License");
  4 # you may not use this file except in compliance with the License.
  5 # You may obtain a copy of the License at
  6 
  7 #     http://www.apache.org/licenses/LICENSE-2.0
  8 
  9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 
  15 import os
  16 
  17 from .vs2010backend import Vs2010Backend
  18 
  19 
  20 class Vs2017Backend(Vs2010Backend):
  21     def __init__(self, build):
  22         super().__init__(build)
  23         self.name = 'vs2017'
  24         self.platform_toolset = 'v141'
  25         self.vs_version = '2017'
  26         # WindowsSDKVersion should be set by command prompt.
  27         self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)
  28
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/mesonbuild/backend/vs2017backend.py b/mesonbuild/backend/vs2017backend.py
  --- a/mesonbuild/backend/vs2017backend.py
  +++ b/mesonbuild/backend/vs2017backend.py
  @@ -24,4 +24,4 @@
           self.platform_toolset = 'v141'
           self.vs_version = '2017'
           # WindowsSDKVersion should be set by command prompt.
  -        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)
  +        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\')
  
verification_info: {"golden_diff": "diff --git a/mesonbuild/backend/vs2017backend.py b/mesonbuild/backend/vs2017backend.py\n--- a/mesonbuild/backend/vs2017backend.py\n+++ b/mesonbuild/backend/vs2017backend.py\n@@ -24,4 +24,4 @@\n         self.platform_toolset = 'v141'\n         self.vs_version = '2017'\n         # WindowsSDKVersion should be set by command prompt.\n-        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)\n+        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\\\')\n", "issue": "VS 2017 backend emits bad WindowsTargetPlatformVersion value\nWhen I tried generating a VS 2017 solution, the generated app.vcxproj contained this:\r\n\r\n```\r\n<WindowsTargetPlatformVersion>10.0.14393.0\\</WindowsTargetPlatformVersion>\r\n```\r\n\r\nWhich then causes errors in other `.targets` files attempting to do a numeric comparison against that.\r\nThis value is probably taken straight from one of these environment variables:\r\n\r\n```\r\nWindowsSDKLibVersion=10.0.14393.0\\\r\nWindowsSDKVersion=10.0.14393.0\\\r\n```\r\n\r\nThe trailing backslash is a bit suspect, but may be there intentionally so it can be concatenated to \r\n```\r\nWindowsSdkDir=C:\\Program Files (x86)\\Windows Kits\\10\\\r\n```\r\ndirectly.\n", "before_files": [{"content": "# Copyright 2014-2016 The Meson development team\n\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n\n#     http://www.apache.org/licenses/LICENSE-2.0\n\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport os\n\nfrom .vs2010backend import Vs2010Backend\n\n\nclass Vs2017Backend(Vs2010Backend):\n    def __init__(self, build):\n        super().__init__(build)\n        self.name = 'vs2017'\n        self.platform_toolset = 'v141'\n        self.vs_version = '2017'\n        # WindowsSDKVersion should be set by command prompt.\n        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)\n", "path": "mesonbuild/backend/vs2017backend.py"}], "after_files": [{"content": "# Copyright 2014-2016 The Meson development team\n\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n\n#     http://www.apache.org/licenses/LICENSE-2.0\n\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport os\n\nfrom .vs2010backend import Vs2010Backend\n\n\nclass Vs2017Backend(Vs2010Backend):\n    def __init__(self, build):\n        super().__init__(build)\n        self.name = 'vs2017'\n        self.platform_toolset = 'v141'\n        self.vs_version = '2017'\n        # WindowsSDKVersion should be set by command prompt.\n        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\\\')\n", "path": "mesonbuild/backend/vs2017backend.py"}]}