build: fix inst check for VS default vcpkg

Since the new default VS vcpkg does not implement list, use list from
the powershell module to check for packages that are already installed.

Signed-off-by: Rafael Kitover <rkitover@gmail.com>

cmake/Set-Toolchain-vcpkg.cmake

@@ -132,7 +132,7 @@ function(vcpkg_deps_fixup vcpkg_exe)
     endif()
 endfunction()
 
-function(vcpkg_is_installed vcpkg_exe pkg_name pkg_ver pkg_triplet outvar)
+function(vcpkg_is_installed vcpkg_exe pkg_name pkg_ver pkg_triplet powershell outvar)
     set(${outvar} FALSE PARENT_SCOPE)
 
     unset(CMAKE_MATCH_1)
@@ -142,10 +142,19 @@ function(vcpkg_is_installed vcpkg_exe pkg_name pkg_ver pkg_triplet outvar)
     string(REPLACE "-" "." pkg_ver ${pkg_ver})
 
     if(NOT DEFINED VCPKG_INSTALLED)
+        if(VCPKG_ROOT MATCHES "^C:/Program Files/Microsoft Visual Studio/")
+            execute_process(
+                COMMAND ${powershell}
+                    -executionpolicy bypass -noprofile
+                    -command "import-module '${CMAKE_BINARY_DIR}/vcpkg-binpkg/vcpkg-binpkg.psm1'; vcpkg-list"
+                OUTPUT_VARIABLE vcpkg_list_text
+            )
+        else()
             execute_process(
                 COMMAND ${vcpkg_exe} list
                 OUTPUT_VARIABLE vcpkg_list_text
             )
+        endif()
 
         string(REGEX REPLACE "\r?\n" ";" vcpkg_list_raw "${vcpkg_list_text}")
 
@@ -238,6 +247,25 @@ function(get_binary_packages vcpkg_exe)
         string(APPEND binary_packages_html "${links}\n")
     endforeach()
 
+    set(vcpkg_binpkg_dir ${CMAKE_BINARY_DIR}/vcpkg-binpkg)
+    include(FetchContent)
+    FetchContent_Declare(
+        vcpkg_binpkg
+        URL "https://github.com/rkitover/vcpkg-binpkg-prototype/archive/refs/heads/master.zip"
+        SOURCE_DIR ${vcpkg_binpkg_dir}
+    )
+
+    FetchContent_GetProperties(vcpkg_binpkg)
+    if(NOT vcpkg_binpkg_POPULATED)
+        FetchContent_Populate(vcpkg_binpkg)
+    endif()
+
+    if(WIN32)
+        set(powershell powershell)
+    else()
+        set(powershell pwsh)
+    endif()
+
     unset(binary_packages)
     unset(to_install)
     foreach(pkg ${binary_packages_html})
@@ -249,7 +277,7 @@ function(get_binary_packages vcpkg_exe)
         set(pkg_version ${CMAKE_MATCH_2})
         set(pkg_triplet ${CMAKE_MATCH_3})
 
-        vcpkg_is_installed(${vcpkg_exe} ${pkg_name} ${pkg_version} ${pkg_triplet} pkg_installed)
+        vcpkg_is_installed(${vcpkg_exe} ${pkg_name} ${pkg_version} ${pkg_triplet} ${powershell} pkg_installed)
 
         if(NOT pkg_installed)
             list(APPEND to_install ${pkg})
@@ -280,27 +308,8 @@ function(get_binary_packages vcpkg_exe)
             message(STATUS "done.")
         endforeach()
 
-        set(vcpkg_binpkg_dir ${CMAKE_BINARY_DIR}/vcpkg-binpkg)
-        include(FetchContent)
-        FetchContent_Declare(
-            vcpkg_binpkg
-            URL "https://github.com/rkitover/vcpkg-binpkg-prototype/archive/refs/heads/master.zip"
-            SOURCE_DIR ${vcpkg_binpkg_dir}
-        )
-
-        FetchContent_GetProperties(vcpkg_binpkg)
-        if(NOT vcpkg_binpkg_POPULATED)
-            FetchContent_Populate(vcpkg_binpkg)
-        endif()
-
-        if(WIN32)
-            set(powershell powershell)
-        else()
-            set(powershell pwsh)
-        endif()
-
-        execute_process(
 #                -command "import-module ($env:USERPROFILE + '/source/repos/vcpkg-binpkg-prototype/vcpkg-binpkg.psm1'); vcpkg-instpkg ."
+        execute_process(
             COMMAND ${powershell}
                 -executionpolicy bypass -noprofile
                 -command "import-module '${CMAKE_BINARY_DIR}/vcpkg-binpkg/vcpkg-binpkg.psm1'; vcpkg-instpkg ."
@@ -341,14 +350,14 @@ function(vcpkg_set_toolchain)
             elseif(EXISTS c:/vcpkg)
                 set(VCPKG_ROOT c:/vcpkg)
             # Prefer the preferred root to the VS default which is more difficult to deal with, if it exists.
-            elseif(EXISTS "${preferred_root}")
-                set(VCPKG_ROOT "${preferred_root}")
+            elseif(EXISTS preferred_root)
+                set(VCPKG_ROOT ${preferred_root})
             else()
                 find_program(vcpkg_exe_path NAME vcpkg.exe HINTS ENV PATH)
 
                 if(vcpkg_exe_path)
-                    get_filename_component(VCPKG_ROOT "${vcpkg_exe_path}" DIRECTORY)
-                    get_filename_component(VCPKG_ROOT "${VCPKG_ROOT}"     ABSOLUTE)
+                    get_filename_component(VCPKG_ROOT ${vcpkg_exe_path} DIRECTORY)
+                    get_filename_component(VCPKG_ROOT ${VCPKG_ROOT}     ABSOLUTE)
                 endif()
 
                 unset(vcpkg_exe_path)
@@ -356,17 +365,17 @@ function(vcpkg_set_toolchain)
         endif()
 
         if(NOT DEFINED VCPKG_ROOT)
-            set(VCPKG_ROOT "${preferred_root}")
+            set(VCPKG_ROOT ${preferred_root})
         endif()
 
-        set(ENV{VCPKG_ROOT} "${VCPKG_ROOT}")
+        set(ENV{VCPKG_ROOT} ${VCPKG_ROOT})
     else()
-        set(VCPKG_ROOT "$ENV{VCPKG_ROOT}")
+        set(VCPKG_ROOT $ENV{VCPKG_ROOT})
     endif()
     
-    set(VCPKG_ROOT "${VCPKG_ROOT}" CACHE FILEPATH "vcpkg installation root path" FORCE)
+    set(VCPKG_ROOT ${VCPKG_ROOT} CACHE FILEPATH "vcpkg installation root path" FORCE)
 
-    if(NOT EXISTS "${VCPKG_ROOT}")
+    if(NOT EXISTS VCPKG_ROOT)
         get_filename_component(root_parent ${VCPKG_ROOT}/.. ABSOLUTE)
 
         execute_process(