From af82bb0abf2b16f6b077bc48633e6daf68414c31 Mon Sep 17 00:00:00 2001
From: Rudi Grinberg <me@rgrinberg.com>
Date: Mon, 30 Aug 2021 01:28:10 -0700
Subject: [PATCH] ocamlPackages.ocaml-lsp: fix minimum ocaml version

ocaml-lsp 1.7.0 is only available for OCaml 4.12 and above. For previous
version of OCaml, an old version must be used.

1.7.0 only supports 4.12

Signed-off-by: Rudi Grinberg <me@rgrinberg.com>
---
 pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix b/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
index f81def4a7b40..fb38dea3d4cf 100644
--- a/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
+++ b/pkgs/development/ocaml-modules/ocaml-lsp/lsp.nix
@@ -14,11 +14,15 @@
 , cmdliner
 }:
 
-buildDunePackage {
+buildDunePackage rec {
   pname = "lsp";
   inherit (jsonrpc) version src;
   useDune2 = true;
-  minimumOCamlVersion = "4.06";
+  minimumOCamlVersion =
+    if lib.versionAtLeast version "1.7.0" then
+      "4.12"
+    else
+      "4.06";
 
   # unvendor some (not all) dependencies.
   # They are vendored by upstream only because it is then easier to install