From 90d9b7c8dc770611f744aa6fad2e1f32a167e807 Mon Sep 17 00:00:00 2001
From: Michael Weiss <dev.primeos@gmail.com>
Date: Sun, 13 Mar 2022 13:33:21 +0100
Subject: [PATCH 1/2] llvmPackages: Fix the update script

---
 pkgs/development/compilers/llvm/14/llvm/default.nix | 3 +++
 pkgs/development/compilers/llvm/update.sh           | 8 ++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/compilers/llvm/14/llvm/default.nix b/pkgs/development/compilers/llvm/14/llvm/default.nix
index d2059cc66ba2..05aac728b452 100644
--- a/pkgs/development/compilers/llvm/14/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/14/llvm/default.nix
@@ -209,6 +209,9 @@ in stdenv.mkDerivation (rec {
 
   checkTarget = "check-all";
 
+  # For the update script:
+  passthru.monorepoSrc = monorepoSrc;
+
   requiredSystemFeatures = [ "big-parallel" ];
   meta = llvm_meta // {
     homepage = "https://llvm.org/";
diff --git a/pkgs/development/compilers/llvm/update.sh b/pkgs/development/compilers/llvm/update.sh
index 603c603f275b..95ad356dbd9a 100755
--- a/pkgs/development/compilers/llvm/update.sh
+++ b/pkgs/development/compilers/llvm/update.sh
@@ -20,7 +20,11 @@ sed -Ei \
 
 readonly ATTRSET="llvmPackages_$VERSION_MAJOR"
 
-if [ "$VERSION_MAJOR" -ge "13" ]; then
+if [ "$VERSION_MAJOR" -ge "14" ]; then
+  readonly SOURCES=(
+    "llvm.monorepoSrc"
+  )
+elif [ "$VERSION_MAJOR" -eq "13" ]; then
   readonly SOURCES=(
     "llvm.src"
   )
@@ -43,7 +47,7 @@ fi
 for SOURCE in "${SOURCES[@]}"; do
   echo "Updating the hash of $SOURCE:"
   declare ATTR="$ATTRSET.$SOURCE"
-  declare OLD_HASH="$(nix eval -f . $ATTR.outputHash)"
+  declare OLD_HASH="$(nix --extra-experimental-features nix-command eval -f . $ATTR.outputHash)"
   declare NEW_HASH="\"$(nix-prefetch-url -A $ATTR)\""
   find "$DIR" -type f -exec sed -i "s/$OLD_HASH/$NEW_HASH/" {} +
 done

From f0c2e464685a4e638f088d4b18e57a32a7014239 Mon Sep 17 00:00:00 2001
From: Michael Weiss <dev.primeos@gmail.com>
Date: Sun, 13 Mar 2022 13:34:02 +0100
Subject: [PATCH 2/2] llvmPackages_14: 14.0.0-rc2 -> 14.0.0-rc4

---
 pkgs/development/compilers/llvm/14/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/compilers/llvm/14/default.nix b/pkgs/development/compilers/llvm/14/default.nix
index 5a91fb17fe61..ce126f7b502f 100644
--- a/pkgs/development/compilers/llvm/14/default.nix
+++ b/pkgs/development/compilers/llvm/14/default.nix
@@ -19,7 +19,7 @@
 
 let
   release_version = "14.0.0";
-  candidate = "rc2"; # empty or "rcN"
+  candidate = "rc4"; # empty or "rcN"
   dash-candidate = lib.optionalString (candidate != "") "-${candidate}";
   rev = ""; # When using a Git commit
   rev-version = ""; # When using a Git commit
@@ -30,7 +30,7 @@ let
     owner = "llvm";
     repo = "llvm-project";
     rev = if rev != "" then rev else "llvmorg-${version}";
-    sha256 = "sha256-5wJEaWvwJohtjqlIsBkqQ5rE6rcWw07MaQnN1RxPb5w=";
+    sha256 = "0xm3hscg6xv48rjdi7sg9ky960af1qyg5k3jyavnaqimlaj9wxgp";
   };
 
   llvm_meta = {