Use libexpected-dev instead of tl_expected (#322)

Author: christophfroehlich

README.md

@@ -296,7 +296,7 @@ Here is an example custom validator.
 #include <rclcpp/rclcpp.hpp>
 
 #include <fmt/core.h>
-#include <tl_expected/expected.hpp>
+#include <tl/expected.hpp>
 
 namespace my_project {
 

example/include/generate_parameter_library_example/example_validators.hpp

@@ -33,7 +33,7 @@
 #include <string>
 
 #include <rclcpp/rclcpp.hpp>
-#include <tl_expected/expected.hpp>
+#include <tl/expected.hpp>
 
 namespace custom_validators {
 

generate_parameter_library/cmake/generate_parameter_library.cmake

@@ -96,10 +96,21 @@ macro(generate_parameter_library LIB_NAME YAML_FILE)
     rclcpp_lifecycle::rclcpp_lifecycle
     rsl::rsl
     tcb_span::tcb_span
+    tl::expected
+    # for backward compatibility
+    # remove once this redirection is removed
+    # https://github.com/PickNikRobotics/cpp_polyfills/pull/12
     tl_expected::tl_expected
   )
   install(DIRECTORY ${LIB_INCLUDE_DIR} DESTINATION include)
-  ament_export_dependencies(fmt parameter_traits rclcpp rclcpp_lifecycle rsl tcb_span tl_expected)
+  ament_export_dependencies(
+    fmt parameter_traits rclcpp rclcpp_lifecycle rsl tcb_span
+    tl-expected
+    # for backward compatibility
+    # remove once this redirection is removed
+    # https://github.com/PickNikRobotics/cpp_polyfills/pull/12
+    tl_expected
+  )
 endmacro()
 
 

generate_parameter_library/generate_parameter_library-extras.cmake

@@ -32,6 +32,10 @@ find_package(rclcpp REQUIRED)
 find_package(rsl REQUIRED)
 find_package(rclcpp_lifecycle REQUIRED)
 find_package(tcb_span REQUIRED)
+find_package(tl-expected REQUIRED)
+# for backward compatibility
+# remove once this redirection is removed
+# https://github.com/PickNikRobotics/cpp_polyfills/pull/12
 find_package(tl_expected REQUIRED)
 
 include("${generate_parameter_library_DIR}/generate_parameter_library.cmake")

generate_parameter_library/package.xml

@@ -24,6 +24,11 @@
   <depend>rclcpp_lifecycle</depend>
   <depend>rsl</depend>
   <depend>tcb_span</depend>
+  <depend>libexpected-dev</depend>
+
+  <!-- for backward compatibility -->
+  <!-- remove once this redirection is removed -->
+  <!-- https://github.com/PickNikRobotics/cpp_polyfills/pull/12 -->
   <depend>tl_expected</depend>
 
   <export>