diff --git a/llvm-runtimes/libcxxabi/libcxxabi-15.0.7.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-15.0.7.ebuild
index e7a513ee9644a..2d9f4be55a5e3 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-15.0.7.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-15.0.7.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..11} )
+PYTHON_COMPAT=( python3_11 )
 inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
 	toolchain-funcs
 
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-16.0.6.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-16.0.6.ebuild
index 68237b6e84e4a..6d1a5eac27666 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-16.0.6.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-16.0.6.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_COMPAT=( python3_{11..12} )
 inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
 	toolchain-funcs
 
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-17.0.6.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-17.0.6.ebuild
index 68237b6e84e4a..6d1a5eac27666 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-17.0.6.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-17.0.6.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_COMPAT=( python3_{11..12} )
 inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
 	toolchain-funcs
 
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-18.1.8.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-18.1.8.ebuild
index 9da765a204d12..2277a541259c5 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-18.1.8.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-18.1.8.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_COMPAT=( python3_{11..12} )
 inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
 inherit toolchain-funcs
 
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-19.1.7.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-19.1.7.ebuild
index fa88464e96761..c1979a4a73b7b 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-19.1.7.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-19.1.7.ebuild
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-20.1.8-r1.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-20.1.8-r1.ebuild
index a06bd9846efbd..38a10023f3753 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-20.1.8-r1.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-20.1.8-r1.ebuild
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-20.1.8.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-20.1.8.ebuild
index f58b11e935cb9..0957e34ce78ce 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-20.1.8.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-20.1.8.ebuild
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-21.1.0-r1.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-21.1.0-r1.ebuild
index 32bef1e8a4aba..76793f80f5b79 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-21.1.0-r1.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-21.1.0-r1.ebuild
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-21.1.0.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-21.1.0.ebuild
index 824ed9bf2394a..6835f8166a0e9 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-21.1.0.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-21.1.0.ebuild
@@ -17,10 +17,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0.9999.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0.9999.ebuild
index 8fb4c0b593f9b..34374381bf614 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0.9999.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0.9999.ebuild
@@ -16,10 +16,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250820.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250820.ebuild
index d1a2b5b4668a2..312f328d5a295 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250820.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250820.ebuild
@@ -16,10 +16,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250831.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250831.ebuild
index 8fb4c0b593f9b..34374381bf614 100644
--- a/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250831.ebuild
+++ b/llvm-runtimes/libcxxabi/libcxxabi-22.0.0_pre20250831.ebuild
@@ -16,10 +16,6 @@ IUSE="+clang +static-libs test"
 REQUIRED_USE="test? ( clang )"
 RESTRICT="!test? ( test )"
 
-# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
-RDEPEND+="
-	!<llvm-runtimes/libcxx-15
-"
 DEPEND="
 	${RDEPEND}
 	llvm-core/llvm:${LLVM_MAJOR}