BaseTools: Update WindowsVsToolChain plugin

This patch updates edk2-pytool-library dependency to v0.14.0, which has
an interface change to FindWithVsWhere. The BaseTools plugin uses this
function, so it is being updated to account for the interface change.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>

Signed-off-by: Joey Vagedes <joeyvagedes@microsoft.com>
Acked-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>

BaseTools/Plugin/WindowsVsToolChain/WindowsVsToolChain.py

@@ -177,15 +177,23 @@ class WindowsVsToolChain(IUefiBuildPlugin):
 
     def _get_vs_install_path(self, vs_version, varname):
         # check if already specified
-        path = shell_environment.GetEnvironment().get_shell_var(varname)
+        path = None
+        if varname is not None:
+            path = shell_environment.GetEnvironment().get_shell_var(varname)
+
         if(path is None):
             # Not specified...find latest
-            (rc, path) = FindWithVsWhere(vs_version=vs_version)
-            if rc == 0 and path is not None and os.path.exists(path):
+            try:
+                path = FindWithVsWhere(vs_version=vs_version)
+            except (EnvironmentError, ValueError, RuntimeError) as e:
+                self.Logger.error(str(e))
+                return None
+
+            if path is not None and os.path.exists(path):
                 self.Logger.debug("Found VS instance for %s", vs_version)
             else:
                 self.Logger.error(
-                    "Failed to find VS instance with VsWhere (%d)" % rc)
+                    f"VsWhere successfully executed, but could not find VS instance for {vs_version}.")
         return path
 
     def _get_vc_version(self, path, varname):

pip-requirements.txt

@@ -12,8 +12,8 @@
 # https://www.python.org/dev/peps/pep-0440/#version-specifiers
 ##
 
-edk2-pytool-library==0.12.1
-edk2-pytool-extensions~=0.20.0
+edk2-pytool-library==0.14.0
+edk2-pytool-extensions~=0.21.8
 edk2-basetools==0.1.39
 antlr4-python3-runtime==4.7.1
 lcov-cobertura==2.0.2