Comment # 3 on bug 1168935 from Aaron Puchert

(In reply to Dominique Leuenberger from comment #0)
> e.g. mozjs68 is unresolvable with: nothing provides clang-tools = 9.0.1
> needed by clang9-devel, (got version 10.0.0-1.1) (llvm10 was last built,
> winning this time inside OBS; for the repo it could be different)

There is another issue here: clang-devel requires clang9-devel, which in turn
requires clang-tools = 9.0.1. Now if I remove clang-tools from llvm9, that
package is no longer installable.

Luckily clang-tools is only a pro-forma requirement, since CMake complains
about missing binaries otherwise, but these binaries aren't typically needed
for development, only the libraries are. (Which is annoying, and hopefully I
get around to fixing that some time.)

So we can just drop the versioning requirement, and take any version of
clang-tools for clangX-devel. (https://build.opensuse.org/request/show/792576)