emerge --depclean offering to remove llvm and clang

[brendlefly62]

Hi all! This just started recently on some stable systems i am running - during a routine system update, when I run emerge -av --depclean, I am notified that there are a bunch of llvm-core/ packages on the list of "not needed" anymore

Code: Select all

...
 llvm-runtimes/clang-stdlib-config
    selected: 20 
   protected: none 
     omitted: none 

 llvm-runtimes/clang-rtlib-config
    selected: 20 
   protected: none 
     omitted: none 

 llvm-core/clang-linker-config
    selected: 20 
   protected: none 
     omitted: none 

 llvm-runtimes/compiler-rt
    selected: 20.1.8 
   protected: none 
     omitted: none 

 sys-devel/gcc
    selected: 14.3.1_p20250801 
   protected: none 
     omitted: 15.2.1_p20260214 

 llvm-core/llvmgold
    selected: 20 
   protected: none 
     omitted: none 

 llvm-core/llvm-toolchain-symlinks
    selected: 20-r1 
   protected: none 
     omitted: none 

 llvm-core/llvm-common
    selected: 20.1.8 
   protected: none 
     omitted: none 

 llvm-core/clang-toolchain-symlinks
    selected: 20 
   protected: none 
     omitted: none 

 llvm-core/clang
    selected: 20.1.8 
   protected: none 
     omitted: none 

 llvm-core/llvm
    selected: 20.1.8 
   protected: none 
     omitted: none 

 llvm-core/clang-common
    selected: 20.1.8-r1 
   protected: none 
     omitted: none 

... and since this is a new behavior I am wondering, why?

I have to imagine these are at least a build-time dependency for a bunch of stuff, and given how big they are and how long they take to compile, I don't want to "lose" them when I run emerge --depclean only to have to remerge them everytime I (re)install something else ... so I have run

Code: Select all

emerge -av --select --noreplace llvm-core/llvm llvm-core/clang

but I am wondering why is has only recently become necessary.

can someone tell me?

thanks

[alamahant]

Apparently for some reason clang stopped being a dependency of your already installed packages.
Maybe a USE flag was removed?
Try running :

Code: Select all

equery d clang

to see which --if any packages depend on clang.