Binary descriptions:

clang-7: C, C++ and Objective-C compiler
clang-7-dbgsym: debug symbols for clang-7
clang-7-doc: C, C++ and Objective-C compiler - Documentation
clang-7-examples: Clang examples
clang-format-7: Tool to format C/C++/Obj-C code
clang-format-7-dbgsym: debug symbols for clang-format-7
clang-tidy-7: clang-based C++ linter tool
clang-tidy-7-dbgsym: debug symbols for clang-tidy-7
clang-tools-7: clang-based tools for C/C++ developments
clang-tools-7-dbgsym: debug symbols for clang-tools-7
libc++-7-dev: LLVM C++ Standard library (development files)
libc++1-7: LLVM C++ Standard library
libc++abi-7-dev: LLVM low level support for a standard C++ library (development files)
libc++abi1-7: LLVM low level support for a standard C++ library
libclang-7-dev: clang library - Development package
libclang-common-7-dev: clang library - Common development package
libclang-common-7-dev-dbgsym: debug symbols for libclang-common-7-dev
libclang1-7: C interface to the clang library
libclang1-7-dbgsym: debug symbols for libclang1-7
libfuzzer-7-dev: Library for coverage-guided fuzz testing
liblld-7: LLVM-based linker, library
liblld-7-dev: LLVM-based linker, header files
liblldb-7: Next generation, high-performance debugger, library
liblldb-7-dbgsym: debug symbols for liblldb-7
liblldb-7-dev: Next generation, high-performance debugger, header files
libllvm-7-ocaml-dev: Modular compiler and toolchain technologies, OCaml bindings
libllvm7: Modular compiler and toolchain technologies, runtime library
libllvm7-dbgsym: debug symbols for libllvm7
libomp-7-dev: LLVM OpenMP runtime - dev package
libomp-7-dev-dbgsym: debug symbols for libomp-7-dev
libomp-7-doc: LLVM OpenMP runtime - Documentation
libomp5-7: LLVM OpenMP runtime
libomp5-7-dbgsym: debug symbols for libomp5-7
lld-7: LLVM-based linker
lld-7-dbgsym: debug symbols for lld-7
lldb-7: Next generation, high-performance debugger
lldb-7-dbgsym: debug symbols for lldb-7
llvm-7: Modular compiler and toolchain technologies
llvm-7-dbgsym: debug symbols for llvm-7
llvm-7-dev: Modular compiler and toolchain technologies, libraries and headers
llvm-7-dev-dbgsym: debug symbols for llvm-7-dev
llvm-7-doc: Modular compiler and toolchain technologies, documentation
llvm-7-examples: Modular compiler and toolchain technologies, examples
llvm-7-runtime: Modular compiler and toolchain technologies, IR interpreter
llvm-7-runtime-dbgsym: debug symbols for llvm-7-runtime
llvm-7-tools: Modular compiler and toolchain technologies, tools
llvm-7-tools-dbgsym: debug symbols for llvm-7-tools
python-clang-7: Clang Python Bindings
python-lldb-7: Next generation, high-performance debugger, python lib

Last common version:

1:7-3