From e7b6d8790f5fbef4743b2a922e6dc84d6c757590 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Tue, 3 Sep 2019 21:25:23 +0200
Subject: [PATCH] ocamlPackages.llvm: build with llvm_8

---
 pkgs/development/ocaml-modules/llvm/default.nix | 10 ++++++----
 pkgs/top-level/ocaml-packages.nix               |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/ocaml-modules/llvm/default.nix b/pkgs/development/ocaml-modules/llvm/default.nix
index 3bced92cc3e3..0dd8231dafe1 100644
--- a/pkgs/development/ocaml-modules/llvm/default.nix
+++ b/pkgs/development/ocaml-modules/llvm/default.nix
@@ -10,18 +10,20 @@ stdenv.mkDerivation {
   buildInputs = [ python cmake llvm ocaml findlib ctypes ];
 
   patches = [ (fetchpatch {
-    url = https://raw.githubusercontent.com/ocaml/opam-repository/master/packages/llvm/llvm.3.9/files/cmake.patch;
-    sha256 = "1fcc6ylfiw1npdhx7mrsj7h0dx7cym7i9664kpr76zqazb52ikm9";
+    url = https://raw.githubusercontent.com/ocaml/opam-repository/2bdc193f5a9305ea93bf0f0dfc1fbc327c8b9306/packages/llvm/llvm.7.0.0/files/fix-shared.patch;
+    sha256 = "1p98j3b1vrryfn1xa7i50m6mmm4dyw5ldafq6kyh9sfmdihz4zsx";
   })];
 
-  cmakeFlags = [ "-DLLVM_OCAML_OUT_OF_TREE=TRUE" ];
+  cmakeFlags = [
+    "-DLLVM_OCAML_OUT_OF_TREE=TRUE"
+    "-DLLVM_OCAML_INSTALL_PATH=${placeholder "out"}/ocaml"
+  ];
 
   buildFlags = "ocaml_all";
 
   installFlags = "-C bindings/ocaml";
 
   postInstall = ''
-    mv $out/lib/ocaml $out/ocaml
     mkdir -p $OCAMLFIND_DESTDIR/
     mv $out/ocaml $OCAMLFIND_DESTDIR/llvm
     mv $OCAMLFIND_DESTDIR/llvm/META{.llvm,}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 16dd32a8a7a6..ac4bd45a5d2b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -391,7 +391,7 @@ let
     linenoise = callPackage ../development/ocaml-modules/linenoise { };
 
     llvm = callPackage ../development/ocaml-modules/llvm {
-      llvm = pkgs.llvm_39;
+      llvm = pkgs.llvm_8;
     };
 
     logs = callPackage ../development/ocaml-modules/logs {