More CI fixes

Author: gershnik

.github/workflows/test.yml

@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        - {os: macos-latest, version: 16.0 }
+        - {os: macos-latest, version: 16 }
         - os: windows-latest
         - {os: ubuntu-latest, compiler: gcc, version: 11 }
         - {os: ubuntu-latest, compiler: gcc, version: 12 }
@@ -65,7 +65,7 @@ jobs:
           fi
         fi
         if [[ '${{ matrix.os }}' == macos-* ]]; then
-            echo "DEVELOPER_DIR=/Applications/Xcode_-${{ matrix.version }}.app" >> $GITHUB_ENV
+            echo "DEVELOPER_DIR=/Applications/Xcode_${{ matrix.version }}.app" >> $GITHUB_ENV
         fi
 
     - name: Configure

test/test_general.cpp

@@ -25,28 +25,24 @@ static_assert(std::is_standard_layout_v<sys_string>);
 static_assert(std::ranges::random_access_range<sys_string::char_access>);
 static_assert(!std::ranges::view<sys_string::char_access>);
 static_assert(!std::ranges::borrowed_range<sys_string::char_access>);
-static_assert(!std::ranges::viewable_range<sys_string::char_access>);
 
 static_assert(std::ranges::forward_range<sys_string::utf32_view>);
 static_assert(!std::ranges::bidirectional_range<sys_string::utf32_view>);
 static_assert(!std::ranges::common_range<sys_string::utf32_view>);
 static_assert(!std::ranges::view<sys_string::utf32_view>);
 static_assert(!std::ranges::borrowed_range<sys_string::utf32_view>);
-static_assert(!std::ranges::viewable_range<sys_string::utf32_view>);
 
 static_assert(std::ranges::forward_range<sys_string::utf16_view>);
 static_assert(!std::ranges::bidirectional_range<sys_string::utf16_view>);
 static_assert(!std::ranges::common_range<sys_string::utf16_view>);
 static_assert(!std::ranges::view<sys_string::utf16_view>);
 static_assert(!std::ranges::borrowed_range<sys_string::utf16_view>);
-static_assert(!std::ranges::viewable_range<sys_string::utf16_view>);
 
 static_assert(std::ranges::forward_range<sys_string::utf8_view>);
 static_assert(!std::ranges::bidirectional_range<sys_string::utf8_view>);
 static_assert(!std::ranges::common_range<sys_string::utf8_view>);
 static_assert(!std::ranges::view<sys_string::utf8_view>);
 static_assert(!std::ranges::borrowed_range<sys_string::utf8_view>);
-static_assert(!std::ranges::viewable_range<sys_string::utf8_view>);
 
 template<class T>
 bool is_eq(T val)