diff --git a/pkgs/development/compilers/llvm/common/clang/default.nix b/pkgs/development/compilers/llvm/common/clang/default.nix
index 90fc14a97712..19ac46ab8f71 100644
--- a/pkgs/development/compilers/llvm/common/clang/default.nix
+++ b/pkgs/development/compilers/llvm/common/clang/default.nix
@@ -282,15 +282,10 @@ stdenv.mkDerivation (
       hardeningUnsupportedFlagsByTargetPlatform =
         targetPlatform:
         [ "fortify3" ]
+        ++ lib.optional (!targetPlatform.isLinux || !targetPlatform.isx86_64) "shadowstack"
+        ++ lib.optional (!targetPlatform.isAarch64 || !targetPlatform.isLinux) "pacret"
         ++ lib.optional (
-          (lib.versionOlder release_version "7") || !targetPlatform.isLinux || !targetPlatform.isx86_64
-        ) "shadowstack"
-        ++ lib.optional (
-          (lib.versionOlder release_version "8") || !targetPlatform.isAarch64 || !targetPlatform.isLinux
-        ) "pacret"
-        ++ lib.optional (
-          (lib.versionOlder release_version "11")
-          || (targetPlatform.isAarch64 && (lib.versionOlder release_version "18.1"))
+          (targetPlatform.isAarch64 && (lib.versionOlder release_version "18.1"))
           || (targetPlatform.isFreeBSD && (lib.versionOlder release_version "15"))
           || !(targetPlatform.isLinux || targetPlatform.isFreeBSD)
           || !(
diff --git a/pkgs/development/compilers/llvm/common/common-let.nix b/pkgs/development/compilers/llvm/common/common-let.nix
index 1a17e39a0690..6c4f3d5604b5 100644
--- a/pkgs/development/compilers/llvm/common/common-let.nix
+++ b/pkgs/development/compilers/llvm/common/common-let.nix
@@ -31,7 +31,7 @@ rec {
       ++ lib.platforms.s390x
       ++ lib.platforms.wasi
       ++ lib.platforms.x86
-      ++ lib.optionals (lib.versionAtLeast release_version "7") lib.platforms.riscv
+      ++ lib.platforms.riscv
       ++ lib.optionals (lib.versionAtLeast release_version "14") lib.platforms.m68k
       ++ lib.optionals (lib.versionAtLeast release_version "16") lib.platforms.loongarch64;
   };
diff --git a/pkgs/development/compilers/llvm/common/lldb/default.nix b/pkgs/development/compilers/llvm/common/lldb/default.nix
index c470536bc935..5de0fec60877 100644
--- a/pkgs/development/compilers/llvm/common/lldb/default.nix
+++ b/pkgs/development/compilers/llvm/common/lldb/default.nix
@@ -258,7 +258,7 @@ stdenv.mkDerivation (
     pname = "lldb-manpages";
 
     buildPhase = lib.optionalString (lib.versionOlder release_version "15") ''
-      make ${if (lib.versionOlder release_version "12") then "docs-man" else "docs-lldb-man"}
+      make docs-lldb-man
     '';
 
     ninjaFlags = lib.optionals (lib.versionAtLeast release_version "15") [ "docs-lldb-man" ];
diff --git a/pkgs/development/compilers/llvm/common/llvm/default.nix b/pkgs/development/compilers/llvm/common/llvm/default.nix
index e7b2abfd83ed..daf88e25b34e 100644
--- a/pkgs/development/compilers/llvm/common/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/common/llvm/default.nix
@@ -198,7 +198,7 @@ stdenv.mkDerivation (
             }
           )
       ++
-        lib.optional (lib.versionAtLeast release_version "12" && lib.versionOlder release_version "19")
+        lib.optional (lib.versionOlder release_version "19")
           # Add missing include headers to build against gcc-15:
           #   https://github.com/llvm/llvm-project/pull/101761
           (