[libcxx-commits] [libcxx] [libc++] Use compiler explorer for Clang as well and update to LLVM 23 as head (PR #185168)

[Louis Dionne via libcxx-commits]

================
@@ -91,42 +91,41 @@ RUN <<EOF
   sudo locale-gen
 EOF
 
-# Install Clang <latest>, <latest-1> and ToT, which are the ones we support.
-# We also install <latest-2> because we need to support the "latest-1" of the
-# current LLVM release branch, which is effectively the <latest-2> of the
-# tip-of-trunk LLVM. For example, after branching LLVM 14 but before branching
-# LLVM 15, we still need to have Clang 12 in this Docker image because the LLVM
-# 14 release branch CI uses it. The tip-of-trunk CI will never use Clang 12,
-# though.
-RUN <<EOF
-  set -e
-  sudo apt-get update
-  wget https://apt.llvm.org/llvm.sh -O /tmp/llvm.sh
-  chmod +x /tmp/llvm.sh
-  sudo /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 3)) all  # for CI transitions
-  sudo /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 2)) all  # previous release
-  sudo /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 1)) all  # latest release
-  sudo /tmp/llvm.sh $LLVM_HEAD_VERSION          all  # current ToT
-  sudo rm -rf /var/lib/apt/lists/*
-EOF
-
 # Install the most recent GCC, like clang install the previous version as a transition.
----------------
ldionne wrote:

```suggestion
# Install the most recent GCC, but also install the previous version as a transition mechanism.
```

https://github.com/llvm/llvm-project/pull/185168