diff --git a/pkgs/development/compilers/llvm/common/default.nix b/pkgs/development/compilers/llvm/common/default.nix
index 73bba6ae13ce..86873c1dbe1d 100644
--- a/pkgs/development/compilers/llvm/common/default.nix
+++ b/pkgs/development/compilers/llvm/common/default.nix
@@ -260,6 +260,7 @@ let
               "openmp/fix-find-tool.patch" = [
                 {
                   after = "17";
+                  before = "19";
                   path = ../17;
                 }
               ];
@@ -1059,9 +1060,9 @@ let
 
       openmp = callPackage ./openmp {
         patches =
-          lib.optional (lib.versionAtLeast metadata.release_version "15") (
-            metadata.getVersionFile "openmp/fix-find-tool.patch"
-          )
+          lib.optional (
+            lib.versionAtLeast metadata.release_version "15" && lib.versionOlder metadata.release_version "19"
+          ) (metadata.getVersionFile "openmp/fix-find-tool.patch")
           ++ lib.optional (
             lib.versionAtLeast metadata.release_version "14" && lib.versionOlder metadata.release_version "18"
           ) (metadata.getVersionFile "openmp/gnu-install-dirs.patch")
diff --git a/pkgs/development/compilers/llvm/common/lldb.nix b/pkgs/development/compilers/llvm/common/lldb.nix
index 2b2ffb009a6f..02cd334d0a70 100644
--- a/pkgs/development/compilers/llvm/common/lldb.nix
+++ b/pkgs/development/compilers/llvm/common/lldb.nix
@@ -30,11 +30,14 @@
 let
   src' =
     if monorepoSrc != null then
-      runCommand "lldb-src-${version}" { } ''
+      runCommand "lldb-src-${version}" { } (''
         mkdir -p "$out"
         cp -r ${monorepoSrc}/cmake "$out"
         cp -r ${monorepoSrc}/lldb "$out"
-      '' else src;
+      '' + lib.optionalString (lib.versionAtLeast release_version "19" && enableManpages) ''
+        mkdir -p "$out/llvm"
+        cp -r ${monorepoSrc}/llvm/docs "$out/llvm/docs"
+      '') else src;
   vscodeExt = {
     name = if lib.versionAtLeast release_version "18" then "lldb-dap" else "lldb-vscode";
     version = if lib.versionAtLeast release_version "18" then "0.2.0" else "0.1.0";
diff --git a/pkgs/development/compilers/llvm/default.nix b/pkgs/development/compilers/llvm/default.nix
index 12d8f4d30a02..8df9d56f0947 100644
--- a/pkgs/development/compilers/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/default.nix
@@ -23,7 +23,7 @@ let
     "16.0.6".officialRelease.sha256 = "sha256-fspqSReX+VD+Nl/Cfq+tDcdPtnQPV1IRopNDfd5VtUs=";
     "17.0.6".officialRelease.sha256 = "sha256-8MEDLLhocshmxoEBRSKlJ/GzJ8nfuzQ8qn0X/vLA+ag=";
     "18.1.8".officialRelease.sha256 = "sha256-iiZKMRo/WxJaBXct9GdAcAT3cz9d9pnAcO1mmR6oPNE=";
-    "19.1.0-rc2".officialRelease.sha256 = "sha256-/WiT3Tp5HsmfOgscvFF4NLHx4tqYroSUC335sm49vs8=";
+    "19.1.0-rc3".officialRelease.sha256 = "sha256-SRonSpXt1pH6Xk+rQZk9mrfMdvYIvOImwUfMUu3sBgs=";
     "20.0.0-git".gitRelease = {
       rev = "4f5d866af7fed0de1671a68530d3023e9762b71e";
       rev-version = "20.0.0-unstable-2024-08-13";