Broken on Plasma 5.23.5 - Manjaro=21.2.2

[daemondev]

-- The C compiler identification is GNU 11.1.0
-- The CXX compiler identification is GNU 11.1.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:10 (find_package):
Could not find a configuration file for package "ECM" that is compatible
with requested version "5.78".

The following configuration files were considered but not accepted:

/usr/share/ECM/cmake/ECMConfig.cmake, version: 5.64.0

[Curve]

Everything works fine for me on latest Plasma on Arch